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【结 构 式】

【分子编号】10973

【品名】(2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol

【CA登记号】20989-17-7

【 分 子 式 】C8H11NO

【 分 子 量 】137.18148

【元素组成】C 70.04% H 8.08% N 10.21% O 11.66%

与该中间体有关的原料药合成路线共 15 条

合成路线1

该中间体在本合成路线中的序号:(I)

A new synthesis for (-)-(R)-rolipram has been described: The cyclization of (S)-2-hydroxy-1-phenylethylamine (I) with 3-formylpropionic acid (II), or the reductocyclization of N-[2-hydroxy-1(S)-phenylethyl]succinimide (III) with NaBH4, yields the bicyclic amine (IV), which is treated with benzyl chloroformate and phenylselenyl bromide to afford the bicyclic ketoester (V). The stereocontrolled arylation of (V) with 4-bromo-2-(cyclopentyloxy)anisole by means of tert-butyllithium in THF gives the arylated ketoester (VII), which is decarboxylated with ammonium formate and Pd/C in methanol to the bicyclic pyrrolidone (VIII). The ring cleavage of (VIII) with Ca metal in liquid ammonia affords the hydroxypyrrolidone (IX), which is finally reduced with sodium cyanoborohydride in THF-methanol.

1 Meyers, A.I.; Snyder, L.; The synthesis of aracemic 4-substituted pyrrolidinones and 3-substituted pyrrolidines. An asymmetric synthesis of (-)-rolipram. J Org Chem 1993, 58, 1, 36.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(II) 10974 Succinic semialdehyde; 4-Oxobutyric acid 692-29-5 C4H6O3 详情 详情
(III) 10975 1-[(1S)-2-Hydroxy-1-phenylethyl]dihydro-1H-pyrrole-2,5-dione C12H13NO3 详情 详情
(IV) 10976 (3S,7aR)-3-Phenyltetrahydropyrrolo[2,1-b][1,3]oxazol-5(6H)-one C12H13NO2 详情 详情
(V) 10977 benzyl (3S,7aR)-5-oxo-3-phenyl-2,3,5,7a-tetrahydropyrrolo[2,1-b][1,3]oxazole-6-carboxylate C20H17NO4 详情 详情
(VI) 10978 4-Bromo-2-(cyclopentyloxy)-1-methoxybenzene; 4-Bromo-2-(cyclopentyloxy)phenyl methyl ether C12H15BrO2 详情 详情
(VII) 10979 benzyl (3S,6S,7R,7aR)-7-[3-(cyclopentyloxy)-4-methoxyphenyl]-5-oxo-3-phenylhexahydropyrrolo[2,1-b][1,3]oxazole-6-carboxylate C32H33NO6 详情 详情
(VIII) 10980 (3S,7R,7aR)-7-[3-(Cyclopentyloxy)-4-methoxyphenyl]-3-phenyltetrahydropyrrolo[2,1-b][1,3]oxazol-5(6H)-one C24H27NO4 详情 详情
(IX) 10981 (4S,5S)-4-[3-(Cyclopentyloxy)-4-methoxyphenyl]-5-hydroxytetrahydro-2H-pyrrol-2-one C16H21NO4 详情 详情

合成路线2

该中间体在本合成路线中的序号:(II)

The reaction of 6-(4-phenylbutoxy)hexanol methanesulfonate (I) with (R)-phenylglycinol (II) by means of DIEA and NaI in hot acetonitrile gives the secondary amine (III), which is condensed with 2-(benzyloxy)-5-(2-bromoacetyl)benzoic acid methyl ester (IV) by means of DIEA in refluxing 1,2-dimethoxyethane to yield the tertiary amine (V). The enantioselective reduction of (V) with LiBH4 in refluxing dimethoxyethane affords the tetrahydroxy derivative (VI), which is finally debenzylated by hydrogenation with H2 over Pd/C in ethanol to provide the target aminoethanol derivative.

1 Procopiou, P.A. (GlaxoSmithKline plc); A novel process for preparing salmeterol. WO 0196278 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 52359 2-bromo-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-1-ethanone C12H13BrO3 详情 详情
(II) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(III) 52360 1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-[(2-hydroxy-1-phenylethyl)amino]-1-ethanone C20H23NO4 详情 详情
(IV) 52361 (1R)-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-{[(1S)-2-hydroxy-1-phenylethyl]amino}-1-ethanol C20H25NO4 详情 详情
(V) 31479 1-[4-[(6-bromohexyl)oxy]butyl]benzene; 6-bromohexyl-4-phenylbutyl ether; 6-Bromohexyloxybutylbenzene 94749-73-2 C16H25BrO 详情 详情
(VI) 52362 6-[(4-phenylbutyl)oxy]hexanal C16H24O2 详情 详情
(VII) 52363 (1R)-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-{[(1S)-2-hydroxy-1-phenylethyl][6-(4-phenylbutoxy)hexyl]amino}-1-ethanol C36H49NO5 详情 详情

合成路线3

该中间体在本合成路线中的序号:((I)

The condensation of the phenacyl bromide (I) with the chiral auxiliary (II) by means of DIEA in THF gives the chiral secondary amine (III), which is submitted to a diastereoselective reduction of the carbonyl group by means of CaCl2 and NaBH4 in methanol to yield a 10:1 enriched mixture of the desired (R)-enantiomer (IV), easily separated by crystallization. The reductocondensation of the chiral amine (IV) with 6-(4-phenylbutoxy)hexanal (V) (obtained by oxidation of 6-(4-phenylbutoxy)hexyl bromide (VI) by means of NaHCO3 and DMSO at 150 C) by means of NaBH(OAc)3 in dichloromethane affords the tertiary amine (VII). Elimination of the chiral auxiliary of (VII) by means of H2 over Pd/C in ethanol provides the secondary amine (VIII), which is finally passed through an acidic SCX-2 ion exchange resin in ethanol to eliminate the acetonide group and give rise to the target (R)-salmeterol.

1 Bream, R.N.; et al.; A mild, enantioselective synthesis of (R)-salmeterol via sodium borohydride-calcium chloride asymmetric reduction of a phenacyl phenylglycinol derivative. J Chem Soc - Perkins Trans I 2002, 20, 2237.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
((I) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(I) 52359 2-bromo-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-1-ethanone C12H13BrO3 详情 详情
(III) 52360 1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-[(2-hydroxy-1-phenylethyl)amino]-1-ethanone C20H23NO4 详情 详情
(IV) 52361 (1R)-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-{[(1S)-2-hydroxy-1-phenylethyl]amino}-1-ethanol C20H25NO4 详情 详情
(V) 52362 6-[(4-phenylbutyl)oxy]hexanal C16H24O2 详情 详情
(VI) 31479 1-[4-[(6-bromohexyl)oxy]butyl]benzene; 6-bromohexyl-4-phenylbutyl ether; 6-Bromohexyloxybutylbenzene 94749-73-2 C16H25BrO 详情 详情
(VII) 52363 (1R)-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-{[(1S)-2-hydroxy-1-phenylethyl][6-(4-phenylbutoxy)hexyl]amino}-1-ethanol C36H49NO5 详情 详情
(VIII) 52679 (1R)-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-{[6-(4-phenylbutoxy)hexyl]amino}-1-ethanol C28H41NO4 详情 详情

合成路线4

该中间体在本合成路线中的序号:

Separation of the Enantiomer: The enantiomers are separated from the racemic carboxylic acid (IV). After activation of the carboxylic acid group as imidazolide (V), this compound reacts with L-phenylglycinol and toluene sulfonic acid in DMF forming the diastereomeric mixture of L-phenylglycinolamides. These diastereomers can be separated by fractionated crystallization using ethanol (diastereomer VI) or a mixture of diethylether and isopropanol (diastereomer VII) as solvents. The release of enantiomerically pure carboxylic acids (VIII) and (IX) takes place by cleavage of the amide bond with sulfuric acid, neutralization and recrystallization from ethanol. The (R)-(-)-enantiomer is the active leukotriene synthesis inhibitor BAY X 1005.

1 Muller-Peddinghaus, R.; Raddatz, S.; BAY X 1005. Drugs Fut 1995, 20, 10, 996.
2 Mohrs, K.; Raddatz, S.; Perzborn, E.; Fruchtmann, R.; Kohlsdorfer, C.; Müller-Peddinghaus, R.; Theisen, P. (Bayer AG); Substd. 4-(quinoline-2-yl-methoxy)phenyl-acetic acid derivs. AU 8935270; DE 3900261; EP 0344519; JP 1990019359; JP 1998053577; US 4970215 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
11353 1,1'-Carbonyldiimidazole; Di(1H-imidazol-1-yl)methanone; N,N-Carbonyldiimidazole; 1,1'-Carbonylbis(1H-imidazole) 530-62-1 C7H6N4O 详情 详情
(IV) 15825 2-cyclopentyl-2-[4-(2-quinolinylmethoxy)phenyl]acetic acid C23H23NO3 详情 详情
(V) 15826 2-cyclopentyl-1-(1H-imidazol-1-yl)-2-[4-(2-quinolinylmethoxy)phenyl]-1-ethanone C26H25N3O2 详情 详情
(VI) 15827 (2S)-2-cyclopentyl-N-[(1S)-2-hydroxy-1-phenylethyl]-2-[4-(2-quinolinylmethoxy)phenyl]ethanamide C31H32N2O3 详情 详情
(VII) 15828 (2R)-2-cyclopentyl-N-[(1S)-2-hydroxy-1-phenylethyl]-2-[4-(2-quinolinylmethoxy)phenyl]ethanamide C31H32N2O3 详情 详情
(VIII) 15829 (2S)-2-cyclopentyl-2-[4-(2-quinolinylmethoxy)phenyl]ethanoic acid C23H23NO3 详情 详情

合成路线5

该中间体在本合成路线中的序号:(XIX)

The synthesis of [1S-(1alpha,2alpha,3alpha,4alpha)]-2-[2-[2-(methoxycarbonyl)ethyl]benzyl]-7-oxabicyclo[2.2.1]heptane-3-carboxylic acid (VI), a key intermediate in the synthesis of 203961 [see scheme 20396101a] has been presented: This compound has been obtained by two similar ways: 1) The condensation of L-valinol (XII) with anhydride (XXII) catalyzed by oxalic acid gives imide (XIII), which is treated with ethylmagnesium chloride, the Grignard reagent (XIV) and NaBH4 yielding intermediate (XV). This intermediate, without isolation, is treated with HCl in THF to afford the substituted benzaldehyde (XVI), which is condensed with trimethyl phosphonoacetate (XVII) and DBU in acetonitrile giving the propenoic ester (XVIII). Finally, this compound is submitted to a simultaneous reduction and hydrogenolysis with H2 over a Pearlman catalyst in methanol to provide the target of [1S-(1alpha,2alpha,3alpha,4alpha)]-2-[2-[2-(methoxycarbonyl)ethyl]benzyl]-7-oxabicyclo[2.2.1]heptane-3-carboxylic acid (VI). 2) The preceding reaction sequence can also be performed using (S)-2-phenylglycinol (XIX) instead of the L-valinol (XII) yielding the previously reported benzaldehyde (XVI) through the imide (XX) and the nonisolated intermediate (XXI).

1 Mueller, R.H.; et al.; Diastereoselective reaction of a grignard reagent with chiral imides: A practical preparation of a key intermediate in the synthesis of ifetroban sodium. Org Process Res Dev 1997, 1, 1, 14.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(VI) 14870 (1R,2S,3R,4S)-3-[2-(3-methoxy-3-oxopropyl)benzyl]-7-oxabicyclo[2.2.1]heptane-2-carboxylic acid C18H22O5 详情 详情
(XII) 36480 (2S)-2-amino-3-methyl-1-butanol; (S)-(+)-Valinol; L-Valinol 2026-48-4 C5H13NO 详情 详情
(XIII) 36473 (1R,2R,6S,7S)-4-[(1R)-1-(hydroxymethyl)-2-methylpropyl]-10-oxa-4-azatricyclo[5.2.1.0(2,6)]decane-3,5-dione C13H19NO4 详情 详情
(XIV) 36475 bromo[2-(1,3-dioxolan-2-yl)phenyl]magnesium C9H9BrMgO2 详情 详情
(XV) 36476 (1S,2S,5R,6R,7R)-4-[(1S)-1,2-dimethylpropyl]-5-[2-(1,3-dioxolan-2-yl)phenyl]-5-hydroxy-10-oxa-4-azatricyclo[5.2.1.0(2,6)]decan-3-one C22H29NO5 详情 详情
(XVI) 36478 2-[(1R,2R,3S,6S,7S)-5-oxo-4,10-dioxatricyclo[5.2.1.0(2,6)]dec-3-yl]benzaldehyde C15H14O4 详情 详情
(XVII) 13272 Methyl 2-(dimethoxyphosphoryl)acetate; Trimethyl phosphoroacetate 5927-18-4 C5H11O5P 详情 详情
(XVIII) 36479 methyl (E)-3-[2-[(1R,2R,3S,6S,7S)-5-oxo-4,10-dioxatricyclo[5.2.1.0(2,6)]dec-3-yl]phenyl]-2-propenoate C18H18O5 详情 详情
(XIX) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(XX) 36474 (1R,2R,6S,7S)-4-[(1R)-2-hydroxy-1-phenylethyl]-10-oxa-4-azatricyclo[5.2.1.0(2,6)]decane-3,5-dione C16H17NO4 详情 详情
(XXI) 36477 (1S,2S,5R,6R,7R)-5-[2-(1,3-dioxolan-2-yl)phenyl]-5-hydroxy-4-[(1S)-1-phenylethyl]-10-oxa-4-azatricyclo[5.2.1.0(2,6)]decan-3-one C25H27NO5 详情 详情
(XXII) 36472 (1R,2R,6S,7S)-4,10-dioxatricyclo[5.2.1.0(2,6)]decane-3,5-dione C8H8O4 详情 详情

合成路线6

该中间体在本合成路线中的序号:(VII)

The esterification of 2(S)-amino-2-phenylethanol (VII) with hot sulfuric acid gives the expected O-sulfate (VIII), which by treatment with hot aqueous NaOH yields the aziridine (IX). The condensation of (IX) with imidazole (VI) by heating at 120 C affords 2(R)-(1-imidazolyl)-2-phenylethan-1-amine (X). Finally, this compound is condensed with 4'-chlorobiphenyl-4-thiocarboxylic acid 2-pyridylthioester in DMF.

1 Schuster, I.; Egger, H. (Novartis AG; Novartis Deutschland GmbH); Acylated aminoalkanimidazoles and -triazoles. CA 2149459; EP 0683156; JP 1996053422; US 5622982 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(VI) 10255 Imidazole; 1H-Imidazole 288-32-4 C3H4N2 详情 详情
(VII) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(VIII) 38675 (2S)-2-amino-2-phenylethyl hydrogen sulfate C8H11NO4S 详情 详情
(IX) 38676 (2S)-2-phenylaziridine C8H9N 详情 详情
(X) 38677 (2R)-2-(1H-imidazol-1-yl)-2-phenyl-1-ethanamine; (2R)-2-(1H-imidazol-1-yl)-2-phenylethylamine C11H13N3 详情 详情
(XI) 38678 S-(2-pyridinyl) 4'-chloro[1,1'-biphenyl]-4-carbothioate C18H12ClNOS 详情 详情

合成路线7

该中间体在本合成路线中的序号:(IV)

The chiral compound was prepared by several alternative procedures. Acid hydrolysis of the known racemic ester (I) gave carboxylic acid (II), which was converted into acid chloride (III) by using oxalyl chloride in benzene. This was either condensed with (S)-2-phenylglycinol (V) or with (S)-4-benzyloxazolidine-2-one (VI) to provide the diastereomeric mixtures of amides (VI) or imides (VII), respectively. After chromatographic separation of the required (S,S)-diastereoisomers, the title compound was obtained by acid hydrolysis of the (S,S)-amide or by hydrolysis of the corresponding imide with NaOH.

1 Haigh, D.; Rami, H.K. (SmithKline Beecham plc); Benzoxazoles and pyridine derivs. useful in the treatment of type II diabetes. EP 0772605; JP 1998503508; WO 9604260; WO 9604261 .
2 Smith, S.A. (SmithKline Beecham plc); Use of an antagonist of PPAR-alpha and PPAR-gamma for the treatment of syndrom X. WO 9725042 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 31288 methyl 3-(4-[2-[1,3-benzoxazol-2-yl(methyl)amino]ethoxy]phenyl)-2-(2,2,2-trifluoroethoxy)propanoate C22H23F3N2O5 详情 详情
(II) 31289 3-(4-[2-[1,3-benzoxazol-2-yl(methyl)amino]ethoxy]phenyl)-2-(2,2,2-trifluoroethoxy)propionic acid C21H21F3N2O5 详情 详情
(III) 31290 3-(4-[2-[1,3-benzoxazol-2-yl(methyl)amino]ethoxy]phenyl)-2-(2,2,2-trifluoroethoxy)propanoyl chloride C21H20ClF3N2O4 详情 详情
(IV) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(V) 14694 (S)-4-Benzyl-2-oxazolidinone; (4S)-4-Benzyl-1,3-oxazolan-2-one; (S)-(-)-4-Benzyl-2-oxazolidinone 90719-32-7 C10H11NO2 详情 详情
(VI) 31291 3-(4-[2-[1,3-benzoxazol-2-yl(methyl)amino]ethoxy]phenyl)-N-[(1S)-2-hydroxy-1-phenylethyl]-2-(2,2,2-trifluoroethoxy)propanamide C29H30F3N3O5 详情 详情
(VII) 31292 (4S)-3-[3-(4-[2-[1,3-benzoxazol-2-yl(methyl)amino]ethoxy]phenyl)-2-(2,2,2-trifluoroethoxy)propanoyl]-4-benzyl-1,3-oxazolidin-2-one C31H30F3N3O6 详情 详情

合成路线8

该中间体在本合成路线中的序号:(XIV)

A synthesis of the (S)-enantiomer of the target compound has also been reported, starting from (S)-1-phenylethanolamine (XIV). Treatment with phenyl chloroformate (XV) and NaHCO3 yielded carbamate (XVI). Subsequent reaction of (XVI) with methanesulfonyl chloride and Et3N provided mesylate (XVII). The sulfonamide (XVIII) was prepared from sulfonyl chloride (VII) by treatment with ammonia gas in CH2Cl2. Condensation of this sulfonamide with mesylate (XVII) in the presence of NaH produced the chiral imidazolidinone (XIX). Finally, the target compound was obtained by condensation with 4-nitrobenzoyl chloride (XII), followed by reduction with H2 in the presence of Raney-Ni.

1 Jung, S.-H.; Lee, H.S.; Song, J.S.; Kim, H.M.; Han, S.B.; Lee, C.W.; Lee, M.; Choi, D.R.; Lee, J.A.; Chung, Y.H.; Yoon, S.J.; Moon, E.Y.; Hwang, H.S.; Seong, S.K.; Lee, D.K.; Synthesis and antitumor activity of 4-phenyl-1-arylsulfonyl imidazolidinones. Bioorg Med Chem Lett 1998, 8, 12, 1547.
2 Yoon, S.J.; Chung, Y.H.; Lee, M.S.; Choi, D.R.; Lee, J.A.; Lee, H.S.; Yun, H.R.; Lee, D.K.; Moon, E.Y.; Hwang, H.S.; Choi, C.H.; Jung, S.H. (Dong-Wha Pharmaceuticals Industry Co. Ltd); Arylsulfonylimidazolone derivs. as an antitumor agent. EP 1021437; JP 2000505096; US 5929103; WO 9807719 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(VII) 19654 1-(2,2,2-trifluoroacetyl)-5-indolinesulfonyl chloride C10H7ClF3NO3S 详情 详情
(XII) 18941 p-nitrobenzoyl chloride; 4-nitrobenzoyl chloride 122-04-3 C7H4ClNO3 详情 详情
(XIV) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(XV) 13580 1-[(Chlorocarbonyl)oxy]benzene; phenyl chloroformate 1885-14-9 C7H5ClO2 详情 详情
(XVI) 19663 phenyl (1S)-2-hydroxy-1-phenylethylcarbamate C15H15NO3 详情 详情
(XVII) 19664 (2S)-2-[(phenoxycarbonyl)amino]-2-phenylethyl methanesulfonate C16H17NO5S 详情 详情
(XVIII) 19665 1-(2,2,2-trifluoroacetyl)-5-indolinesulfonamide C10H9F3N2O3S 详情 详情
(XIX) 19666 (4S)-1-(2,3-dihydro-1H-indol-5-ylsulfonyl)-4-phenyl-2-imidazolidinone C17H17N3O3S 详情 详情
(XX) 19667 (4S)-1-[[1-(4-nitrobenzoyl)-2,3-dihydro-1H-indol-5-yl]sulfonyl]-4-phenyl-2-imidazolidinone C24H20N4O6S 详情 详情

合成路线9

该中间体在本合成路线中的序号:(V)

Protection of indoline (I) using trifluoroacetic anhydride provided N-trifluoroacetylindoline (II), which was sulfonated with chlorosulfonic acid to give sulfonyl chloride (III). Further treatment with ammonia in CH2Cl2 produced sulfonamide (IV). Phenylglycinol (V) was condensed with phenyl chloroformate to afford carbamate (VI). Subsequent reaction of (VI) with metanesulfonyl chloride and triethylamine yielded mesylate (VII). The condensation of sulfonamide (IV) with mesylate (VII), with concomitant cyclization of carbamate group and trifluoroacetyl deprotection, furnished imidazolone (VIII). This was further condensed with 4-nitrobenzoyl chloride (IX), and the resulting 4-nitrobenzamide (X) was finally reduced to the target aminobenzamide by hydrogenation over Raney Nickel.

1 Yoon, S.J.; Chung, Y.H.; Lee, M.S.; Choi, D.R.; Lee, J.A.; Lee, H.S.; Yun, H.R.; Lee, D.K.; Moon, E.Y.; Hwang, H.S.; Choi, C.H.; Jung, S.H. (Dong-Wha Pharmaceuticals Industry Co. Ltd); Arylsulfonylimidazolone derivs. as an antitumor agent. EP 1021437; JP 2000505096; US 5929103; WO 9807719 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
13580 1-[(Chlorocarbonyl)oxy]benzene; phenyl chloroformate 1885-14-9 C7H5ClO2 详情 详情
(I) 19652 indoline 496-15-1 C8H9N 详情 详情
(II) 19653 1-(2,3-dihydro-1H-indol-1-yl)-2,2,2-trifluoro-1-ethanone C10H8F3NO 详情 详情
(III) 19654 1-(2,2,2-trifluoroacetyl)-5-indolinesulfonyl chloride C10H7ClF3NO3S 详情 详情
(IV) 19665 1-(2,2,2-trifluoroacetyl)-5-indolinesulfonamide C10H9F3N2O3S 详情 详情
(V) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(VI) 19663 phenyl (1S)-2-hydroxy-1-phenylethylcarbamate C15H15NO3 详情 详情
(VII) 19664 (2S)-2-[(phenoxycarbonyl)amino]-2-phenylethyl methanesulfonate C16H17NO5S 详情 详情
(VIII) 19666 (4S)-1-(2,3-dihydro-1H-indol-5-ylsulfonyl)-4-phenyl-2-imidazolidinone C17H17N3O3S 详情 详情
(IX) 18941 p-nitrobenzoyl chloride; 4-nitrobenzoyl chloride 122-04-3 C7H4ClNO3 详情 详情
(X) 19667 (4S)-1-[[1-(4-nitrobenzoyl)-2,3-dihydro-1H-indol-5-yl]sulfonyl]-4-phenyl-2-imidazolidinone C24H20N4O6S 详情 详情

合成路线10

该中间体在本合成路线中的序号:(II)

Strecker condensation of 3-hydroxybenzaldehyde (I) with trimethylsilyl cyanide in the presence of (S)-2-phenylglycine (II) yielded the chiral aminonitrile (III) as the major diastereoisomer. Oxidative cleavage of the chiral auxiliary of (III) with lead tetraacetate, followed by acid hydrolysis of the nitrile group provided the (S)-amino acid (IV), which was esterified with MeOH and Me3SiCl. The resulting aminoester (V) was coupled with carboxylic acid (VI) using diphenylphosphoryl azide to form amide ester (VII). Finally, saponification of the methyl ester of (VIII) afforded the target carboxylic acid.

1 Baek, D.-J.; Park, Y.-K.; Heo, H.I.; Lee, M.; Yang, Z.; Choi, M.; Synthesis of 5-substituted quinazolinone derivatives and their inhibitory activity in vitro. Bioorg Med Chem Lett 1998, 8, 23, 3287.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 28537 3-hydroxybenzaldehyde 100-83-4 C7H6O2 详情 详情
(II) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(III) 29636 (2S)-2-(3-hydroxyphenyl)-2-[[(1R)-2-hydroxy-1-phenylethyl]amino]ethanenitrile C16H16N2O2 详情 详情
(IV) 29637 (2S)-2-amino-2-(3-hydroxyphenyl)ethanoic acid C8H9NO3 详情 详情
(V) 29638 methyl (2S)-2-amino-2-(3-hydroxyphenyl)ethanoate C9H11NO3 详情 详情
(VI) 29639 4-[(2-amino-6-methyl-4-oxo-3,4-dihydro-5-quinazolinyl)sulfanyl]benzoic acid C16H13N3O3S 详情 详情
(VII) 29640 methyl (2S)-2-([4-[(2-amino-6-methyl-4-oxo-3,4-dihydro-5-quinazolinyl)sulfanyl]benzoyl]amino)-2-(3-hydroxyphenyl)ethanoate C25H22N4O5S 详情 详情

合成路线11

该中间体在本合成路线中的序号:(II)

Strecker condensation of 3-cyanobenzaldehyde (I) with trimethylsilyl cyanide in the presence of (S)-2-phenylglycine (II) yielded the chiral aminonitrile (III) as the major diastereoisomer. Oxidative cleavage of the chiral auxiliary of (III) with lead tetraacetate, followed by acid hydrolysis of the nitrile groups provided the (S)-amino acid (IV), which was esterified with MeOH and Me3SiCl. The resulting aminoester (V) was coupled with carboxylic acid (VI) using diphenylphosphoryl azide to form amide ester (VII). Finally, saponification of both methyl esters of (VII) afforded the target dicarboxylate salt.

1 Baek, D.-J.; Park, Y.-K.; Heo, H.I.; Lee, M.; Yang, Z.; Choi, M.; Synthesis of 5-substituted quinazolinone derivatives and their inhibitory activity in vitro. Bioorg Med Chem Lett 1998, 8, 23, 3287.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 13245 3-Formylbenzonitrile; 3-Cyanobenzaldehyde 24964-64-5 C8H5NO 详情 详情
(II) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(III) 29641 3-((S)-cyano[[(1R)-2-hydroxy-1-phenylethyl]amino]methyl)benzonitrile C17H15N3O 详情 详情
(IV) 29642 3-[(S)-amino(carboxy)methyl]benzoic acid C9H9NO4 详情 详情
(V) 29643 methyl 3-[(1S)-1-amino-2-methoxy-2-oxoethyl]benzoate C11H13NO4 详情 详情
(VI) 29639 4-[(2-amino-6-methyl-4-oxo-3,4-dihydro-5-quinazolinyl)sulfanyl]benzoic acid C16H13N3O3S 详情 详情
(VII) 29644 methyl 3-[(1S)-1-([4-[(2-amino-6-methyl-4-oxo-3,4-dihydro-5-quinazolinyl)sulfanyl]benzoyl]amino)-2-methoxy-2-oxoethyl]benzoate C27H24N4O6S 详情 详情

合成路线12

该中间体在本合成路线中的序号:(XIX)

Resolution of the racemic acid (X) was carried out via activation as the mixed anhydride (XVIII) upon treatment with pivaloyl chloride (XVII) and triethylamine. Anhydride (XVIII) was then condensed with (S)-2-phenylglycinol (XIX), producing a separable mixture of diastereomeric amides. Isolation of the desired (S,S)-isomer (XX) by silica gel chromatography, followed by amide hydrolysis under acidic conditions, furnished the target (S)-enantiomer.

2 Kalchar, S.; Lohray, V.B.; Lohray, B.B.; Chakrabarti, R.; Bajji, A.C.; Ramanujam, R. (Dr. Reddy's Research Foundation); Novel tricyclic cpds. and their use in medicine; process for their preparation and pharmaceutical compsns. containing them. EP 1049684; JP 2001519422; WO 9919313 .
3 Rajagopalan, R.; Ashok, C.B.; Shivaramayya, K.; Gurram, R.M.; Lohray, B.B.; Paraselli, B.R.; Rajan, C.; Lohray, V.B. (Dr. Reddy's Research Foundation); Novel tricyclic cpds. and their use in medicine; process for their preparation and pharmaceutical compsn. containing them. EP 1155006; WO 0050414 .
1 Lohray, B.B.; et al.; (-)-3-[4-[2-(Phenoxazin-10-yl)ethoxy]phenyl]-2-ethoxypropanoic acid[(-)DRF 2725]: A dual PPAR agonist with potent antihyperglycemic and lipid modulating activity. J Med Chem 2001, 44, 16, 2675.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(X) 51681 2-ethoxy-3-[4-[2-(10H-phenoxazin-10-yl)ethoxy]phenyl]propionic acid C25H25NO5 详情 详情
(XVII) 13597 2,2-Dimethylpropanoyl chloride; Pivaloyl chloride 3282-30-2 C5H9ClO 详情 详情
(XVIII) 51691 1,1-dimethylpropionic 1-ethoxy-2-[4-[2-(10H-phenoxazin-10-yl)ethoxy]phenyl]propionic anhydride C30H33NO6 详情 详情
(XIX) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(XX) 51692 (2S)-2-ethoxy-N-[(1S)-2-hydroxy-1-phenylethyl]-3-[4-[2-(10H-phenoxazin-10-yl)ethoxy]phenyl]propanamide C33H34N2O5 详情 详情

合成路线13

该中间体在本合成路线中的序号:(IV)

3,5-Dichlorosalicylaldehyde (I) was protected by treatment with methoxyethoxymethyl chloride (II) in the presence of K2CO3 in DMF. The protected aldehyde (III) was then condensed with (S)-phenylglycinol (IV) to give the chiral imine (V). Addition of the Reformatskii reagent (VI) to the imine function gave rise to aminoester (VII) as a single diastereoisomer. Dealkylation of (VII) with lead tetraacetate furnished the chiral primary amine (VIII). Subsequent acidic treatment of (VIII) cleaved the methoxyethoxy protecting group and the tert-butyl ester to afford (IX). Amine (IX) was then coupled with N-Boc-glycine N-hydroxysuccinimidyl ester (X), producing amide (XI). Acid cleavage of the N-Boc group of (XI) then yielded the intermediate (XII).

2 Ruminski, P.G.; Rogers, T.E. (Pharmacia Corp.); Meta-azacyclic amino benzoic acid cpds. and derivs. thereof being integrin antagonists. EP 1060164; WO 9944994 .
3 Gordon, G.B.; Ruminski, P.G.; Nickols, G.A.; Westlin, W.F.; Rogers, T.E.; Cunningham, J. (Pharmacia Corp.); Use of integrin antagonist and a chemotherapeutic agent in the treatment of neoplasia. WO 0051686 .
1 Ruminski, P.G.; Clare, M.; Collins, P.W.; Desai, B.N.; Lindmark, R.J.; Rico, J.G.; Rogers, T.E.; Russell, M.A. (Pharmacia Corp.); Meta-guanidine, urea, thiourea or azacyclic amino benzoic acid derivs. as integrin antagonists. EP 0850221; JP 1999510814; US 6013651; WO 9708145 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 21323 3,5-dichloro-2-hydroxybenzaldehyde; 3,5-Dichlorosalicylaldehyde 90-60-8 C7H4Cl2O2 详情 详情
(II) 40670 2-(chloromethoxy)ethyl methyl ether; 1-(chloromethoxy)-2-methoxyethane; (2-methoxyethoxy)methyl chloride 3970-21-6 C4H9ClO2 详情 详情
(III) 47968 3,5-dichloro-2-[(2-methoxyethoxy)methoxy]benzaldehyde C11H12Cl2O4 详情 详情
(IV) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(V) 47969 (2R)-2-[((E)-[3,5-dichloro-2-[(2-methoxyethoxy)methoxy]phenyl]methylidene)amino]-2-phenyl-1-ethanol C19H21Cl2NO4 详情 详情
(VI) 40586 bromo[2-(tert-butoxy)-2-oxoethyl]zinc C6H11BrO2Zn 详情 详情
(VII) 47970 tert-butyl (3S)-3-[3,5-dichloro-2-[(2-methoxyethoxy)methoxy]phenyl]-3-[[(1R)-2-hydroxy-1-phenylethyl]amino]propanoate C25H33Cl2NO6 详情 详情
(VIII) 47971 tert-butyl (3S)-3-amino-3-[3,5-dichloro-2-[(2-methoxyethoxy)methoxy]phenyl]propanoate C17H25Cl2NO5 详情 详情
(IX) 47972 ethyl (3S)-3-amino-3-(3,5-dichloro-2-hydroxyphenyl)propanoate C11H13Cl2NO3 详情 详情
(X) 16364 tert-butyl N-[2-[(2,5-dioxo-1-pyrrolidinyl)oxy]-2-oxoethyl]carbamate; N-T-BOC-glycine N-hydroxysuccinimide ester 3392-07-2 C11H16N2O6 详情 详情
(XI) 47973 ethyl (3S)-3-([2-[(tert-butoxycarbonyl)amino]acetyl]amino)-3-(3,5-dichloro-2-hydroxyphenyl)propanoate C18H24Cl2N2O6 详情 详情
(XII) 47974 ethyl (3S)-3-[(2-aminoacetyl)amino]-3-(3,5-dichloro-2-hydroxyphenyl)propanoate C13H16Cl2N2O4 详情 详情

合成路线14

该中间体在本合成路线中的序号:(III)

The hydroxyl group of 3,5-dichlorosalicylaldehyde (I) is protected as the methoxyethoxymethyl (MEM) ether (II) with MEM chloride in DMF. Condensation of the protected salicylaldehyde (II) with (S)-phenylglycinol (III) yields the chiral aldimine (IV). This is then reacted with the Reformatski reagent (VI), prepared from t-butyl bromoacetate (V), to provide adduct (VII). Oxidative removal of the chiral auxiliary group of (VII) with lead tetraacetate, followed by acidic cleavage of the t-butyl and MEM groups, leads to amino ester (VIII). Coupling of (VIII) with the succinimidyl ester of N-Boc-glycine (IX) furnishes amide (X). The N-Boc protecting group of (X) is then removed under acidic conditions to yield amine (XI) (1).

1 Miyashiro, J.M.; Gasiecki, A.F.; Khanna, I.K.; Chandrakumar, N.S.; Desai, B.N.; Russell, M.A.; Devadas, B.; Rico, J.G.; Rogers, T.E.; Rao, S.N.; Malecha, J.W.; Ruminski, P.G.; Yu, Y.; Huff, R. (Pfizer Inc.); Heterocyclic glycyl beta-alanine derivs. as vitronectin antagonists. EP 1070060; JP 2002511462; WO 9952896 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 21323 3,5-dichloro-2-hydroxybenzaldehyde; 3,5-Dichlorosalicylaldehyde 90-60-8 C7H4Cl2O2 详情 详情
(II) 47968 3,5-dichloro-2-[(2-methoxyethoxy)methoxy]benzaldehyde C11H12Cl2O4 详情 详情
(III) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(IV) 47969 (2R)-2-[((E)-[3,5-dichloro-2-[(2-methoxyethoxy)methoxy]phenyl]methylidene)amino]-2-phenyl-1-ethanol C19H21Cl2NO4 详情 详情
(V) 17430 2-Bromoacetic acid tert-butyl ester; tert-butyl 2-bromoacetate; tert-Butyl bromoacetate 5292-43-3 C6H11BrO2 详情 详情
(VI) 40586 bromo[2-(tert-butoxy)-2-oxoethyl]zinc C6H11BrO2Zn 详情 详情
(VII) 47970 tert-butyl (3S)-3-[3,5-dichloro-2-[(2-methoxyethoxy)methoxy]phenyl]-3-[[(1R)-2-hydroxy-1-phenylethyl]amino]propanoate C25H33Cl2NO6 详情 详情
(VIII) 47972 ethyl (3S)-3-amino-3-(3,5-dichloro-2-hydroxyphenyl)propanoate C11H13Cl2NO3 详情 详情
(IX) 16364 tert-butyl N-[2-[(2,5-dioxo-1-pyrrolidinyl)oxy]-2-oxoethyl]carbamate; N-T-BOC-glycine N-hydroxysuccinimide ester 3392-07-2 C11H16N2O6 详情 详情
(X) 47973 ethyl (3S)-3-([2-[(tert-butoxycarbonyl)amino]acetyl]amino)-3-(3,5-dichloro-2-hydroxyphenyl)propanoate C18H24Cl2N2O6 详情 详情
(XI) 47974 ethyl (3S)-3-[(2-aminoacetyl)amino]-3-(3,5-dichloro-2-hydroxyphenyl)propanoate C13H16Cl2N2O4 详情 详情

合成路线15

该中间体在本合成路线中的序号:(III)

Reaction of bromoacetyl bromide (I) with phenol at 80 °C gives the phenyl ester (II) , which by cyclization with (S)-(+)-phenylglycinol (III), previously treated with DIEA, in acetonitrile provides 5(S)-phenylmorpholin-2-one (IV) . Treatment of compound (IV) with HCl affords the corresponding HCl salt (V), which is reacted with NaHCO3 followed by coupling with benzodioxane-6-carboxaldehyde (VI) in refluxing EtOAc/toluene to yield the oxazine adduct (VII). Oxazine derivative (VII) can also be obtained by direct coupling of 5(S)-phenylmorpholin-2-one (IV) with aldehyde (VI) in refluxing toluene. Opening of adduct (VII) with pyrrolidine (VIII) in CH2Cl2, CHCl3 or refluxing THF followed by addition of HCl in refluxing MeOH leads to 3-(1,4-benzodioxan-6-yl)-3(R)-hydroxy-2(R)-(2-hydroxy-1-phenylethylamino)-1-(pyrrolidin-1-yl)propanone (IX), which is reduced with LiAlH4 in refluxing THF to give diol (X). Cleavage of diol (X) by means of H2 and Pd(OH)2 in the presence of either CF3COOH or HCl in MeOH or EtOH/H2O provides amine (XI), which is finally coupled with octanoic acid N-hydroxysuccinimide ester (XII) in CH2Cl2 . Ester (XII) is prepared by condensation of octanoyl chloride (XIII) with N-hydroxysuccinimide (XIV) by means of Et3N in CH2Cl2 .

1 Dellaria, J.F. Jr., Santarsiero, B.D. Enantioselective synthesis of alphaamino acid derivatives via the stereoselective alkylation of a homochiral glycine enolate synthon. J Org Chem 1989, 54(16): 3916-26.
2 Siegel, C., Hirth, B.H. (Genzyme Corp.). Synthesis of UDP-glucose:N-acylsphingosine glucosyltransferase inhibitors. CA 2453978, EP 1409467, EP 2067775, JP 2005255686, JP 2005502635, JP 2010095546, US 2003050299, US 6855830, WO 2003008399.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 14005 2-Bromoacetyl bromide; Bromoacetyl bromide 598-21-0 C2H2Br2O 详情 详情
(II) 69187 phenyl 2-bromoacetate;Phenyl bromoacetate;alpha-Phenyl Bromoacetate;Phenyl a-bromoacetate;bromoacetic acidphenyl ester 620-72-4 C8H7BrO2 详情 详情
(III) 10973 (2S)-2-Amino-2-phenyl-1-ethanol; (S)-2-Hydroxy-1-phenylethylamine; (S)-(+)-2-Phenylglycinol; (S)-2-Amino-2-phenyl-1-ethanol 20989-17-7 C8H11NO 详情 详情
(IV) 61798 (5S)-5-phenyl-2-morpholinone;5(S)-phenylmorpholin-2-one;(5S)-3,4,5,6-Tetrahydro-5-phenyl-4(H)-1,4-oxazin-2-one 144896-92-4 C10H11NO2 详情 详情
(V) 69188 5(S)-phenylmorpholin-2-one hydrochloride   C10H11NO2.HCl 详情 详情
(VI) 61797 2,3-dihydro-1,4-benzodioxine-6-carbaldehyde; 1,4-Benzodioxan-6-carboxaldehyde; 3,4-ethylenedioxybenzaldehyde ;benzodioxane-6-carboxaldehyde 29668-44-8 C9H8O3 详情 详情
(VII) 61799 (1S,3S,5S)-1,3-di(2,3-dihydro-1,4-benzodioxin-6-yl)-5-phenyltetrahydro-8H-[1,3]oxazolo[4,3-c][1,4]oxazin-8-one C28H25NO7 详情 详情
(VIII) 11376 Pyrrolidine 123-75-1 C4H9N 详情 详情
(IX) 61800 (2R,3R)-3-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-hydroxy-2-[(2-hydroxy-1-phenylethyl)amino]-1-(1-pyrrolidinyl)-1-propanone C23H28N2O5 详情 详情
(X) 61801 (1R,2R)-1-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-[(2-hydroxy-1-phenylethyl)amino]-3-(1-pyrrolidinyl)-1-propanol C23H30N2O4 详情 详情
(XI) 61802 (1R,2R)-2-amino-1-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-(1-pyrrolidinyl)-1-propanol C15H22N2O3 详情 详情
(XII) 69189 octanoic acid N-hydroxysuccinimide ester;2,5-Dioxopyrrolidin-1-yl octanoate;Caprylic acid N-hydroxysuccinimide ester;N-(Octanoyloxy)succinimide;N-Hydroxysuccinimidyl caprylate 14464-30-3 C12H19NO4 详情 详情
(XIII) 11123 Octanoyl chloride; n-Caprylyl chloride;Capryloyl chloride 111-64-8 C8H15ClO 详情 详情
(XIV) 10264 1-Hydroxydihydro-1H-pyrrole-2,5-dione; N-Hydroxysuccinimide; 1-Hydroxy-2,5-pyrrolidinedione 6066-82-6 C4H5NO3 详情 详情
Extended Information