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【结 构 式】

【分子编号】13245

【品名】3-Formylbenzonitrile; 3-Cyanobenzaldehyde

【CA登记号】24964-64-5

【 分 子 式 】C8H5NO

【 分 子 量 】131.13384

【元素组成】C 73.27% H 3.84% N 10.68% O 12.2%

与该中间体有关的原料药合成路线共 8 条

合成路线1

该中间体在本合成路线中的序号:(III)

Free radical bromination of 3-tolunitrile gives 3-cyanobenzyl bromide, which is oxidized with hexamine/acetic acid to 3-cyanobenzaldehyde. A Knoevenagel reaction with malonic acid then gives 3-cyanocinnamic acid, which is reduced to the alcohol via the acid chloride. The tetrazole ring is formed by reaction of the alcohol with sodium azide and triethylamine hydrogen chloride in dimethyl acetamide. This tetrazole group is then protected using trityl chloride and triethylamine in dichloromethane. The key chiral epoxidation is conducted using tert-butyl hydroperoxide and catalytic quantities of diisopropyl L-tartrate and titanium (IV) isopropoxide. A Swern oxidation then gives the aldehyde, which is homolagated to the trans-alpha,beta-unsaturated aldehyde using the formyl methylene ylid. This aldehyde is then reacted at -100 C with the ylid formed from n-decylphosphonium bromide and sodium bis(trimethylsilyl)amide in THF. A base catalyzed Sn2 reaction between the diene epoxide and methyl 3-thiopropionate in methanol gives the protected analogue of LY-170680. Finally, the protecting groups are removed using acid ion exchange resin followed by base hydrolysis in methanol/water. After chromatography LY-170680 is crystallized from acetone/hexane.

1 Wishart, G.; Baker, S.R.; Lucas, R.; Boot, J.R.; Sulukast. Drugs Fut 1991, 16, 5, 432.
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) 13243 m-Tolunitrile; 3-Methylbenzonitrile 620-22-4 C8H7N 详情 详情
(II) 13244 alpha-Bromo-m-tolunitrile; 3-(Bromomethyl)benzonitrile 28188-41-2 C8H6BrN 详情 详情
(III) 13245 3-Formylbenzonitrile; 3-Cyanobenzaldehyde 24964-64-5 C8H5NO 详情 详情
(IV) 13246 (E)-3-(3-Cyanophenyl)-2-propenoic acid C10H7NO2 详情 详情
(V) 13247 (E)-3-(3-Cyanophenyl)-2-propenoyl chloride C10H6ClNO 详情 详情
(VI) 13248 3-[(E)-3-Hydroxy-1-propenyl]benzonitrile C10H9NO 详情 详情
(VII) 13249 (E)-3-[3-(1H-1,2,3,4-Tetraazol-5-yl)phenyl]-2-propen-1-ol C10H10N4O 详情 详情
(VIII) 13250 (E)-3-[3-(2-trityl-2H-1,2,3,4-Tetraazol-5-yl)phenyl]-2-propen-1-ol C29H24N4O 详情 详情
(IX) 13251 [(2S,3S)-3-[3-(2-trityl-2H-1,2,3,4-Tetraazol-5-yl)phenyl]oxiranyl]methanol C29H24N4O2 详情 详情
(X) 13252 (2R,3S)-3-[3-(2-trityl-2H-1,2,3,4-Tetraazol-5-yl)phenyl]-2-oxiranecarbaldehyde C29H22N4O2 详情 详情
(XI) 55468 2-(triphenylphosphoranylidene)acetaldehyde C20H17OP 详情 详情
(XII) 13253 (E)-3-[(2S,3S)-3-[3-(2-trityl-2H-1,2,3,4-Tetraazol-5-yl)phenyl]oxiranyl]-2-propenal C31H24N4O2 详情 详情
(XIII) 13254 5-(3-[(2S,3S)-3-[(1E,3Z)-1,3-Tridecadienyl]oxiranyl]phenyl)-2-trityl-2H-1,2,3,4-tetraazole C41H44N4O 详情 详情
(XIV) 13255 methyl 3-[((1R,2E,4Z)-1-[(S)-hydroxy[3-(2-trityl-2H-1,2,3,4-tetraazol-5-yl)phenyl]methyl]-2,4-tetradecadienyl)sulfanyl]propanoate C45H52N4O3S 详情 详情
(XV) 13256 methyl 3-[((1R,2E,4Z)-1-[(S)-hydroxy[3-(1H-1,2,3,4-tetraazol-5-yl)phenyl]methyl]-2,4-tetradecadienyl)sulfanyl]propanoate C26H38N4O3S 详情 详情

合成路线2

该中间体在本合成路线中的序号:(V)

The reaction of trifluoroacetoacetic acid ethyl ester (I) with (?)-isoborneol (II) at 130 C gives the corresponding isobornyl ester (III), which is condensed with cyclohexane-1,3-dione (IV) and 3-cyanobenzaldehyde (V) by means of ammonium acetate in refluxing ethanol to yield the octahydroquinolone (VI). The hydrolysis of the ester group of (VI), with simultaneous dehydration by means of TsOH in refluxing toluene affords 4-(3-cyanophenyl)-5-oxo-2-(trifluoromethyl)-1,4,5,6,7,8-hexahydroquinoline-3-carboxylic acid (VII) as a racemic mixture. Optical resolution of (VII) through the diastereomeric salt with 1(S)-phenylethylamine (VIII) in toluene/butanol provides the desired isomer (IX), which is finally decarboxylated in N-methyl-2-pyrrolidone at 210 C to furnish the target hexahydroquinolone.

1 Ashworth, I.; Hopes, P.; Levin, D.; Patel, I.; Salloo, R.; An asymmetric synthesis of a 4-substituted-1,4-dihydropyridine. Tetrahedron Lett 2002, 43, 28, 4931.
2 Warawa, J.E.; Ohnmacht, C.J. Jr.; Trainor, D.A.; Hulsizer, J.M. (AstraZeneca plc); Quinolone deriv. for treatment of urinary incontinence. EP 0755382; JP 1997512254; WO 9528388 .
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) 62025 propyl 4,4,4-trifluoro-3-oxobutanoate C7H9F3O3 详情 详情
(II) 62026 (1R)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol C10H18O 详情 详情
(III) 62027 (1R)-1,7,7-trimethylbicyclo[2.2.1]hept-2-yl 4,4,4-trifluoro-3-oxobutanoate C14H19F3O3 详情 详情
(IV) 11244 1,3-Cyclohexanedione 504-02-9 C6H8O2 详情 详情
(V) 13245 3-Formylbenzonitrile; 3-Cyanobenzaldehyde 24964-64-5 C8H5NO 详情 详情
(VI) 62028 (1R)-1,7,7-trimethylbicyclo[2.2.1]hept-2-yl 4-(3-cyanophenyl)-2-hydroxy-5-oxo-2-(trifluoromethyl)-1,2,3,4,5,6,7,8-octahydro-3-quinolinecarboxylate C28H31F3N2O4 详情 详情
(VII) 62029 4-(3-cyanophenyl)-5-oxo-2-(trifluoromethyl)-1,4,5,6,7,8-hexahydro-3-quinolinecarboxylic acid C18H13F3N2O3 详情 详情
(VIII) 10039 (1R)-1-Phenylethylamine; (1R)-1-Phenyl-1-ethanamine.; L-alpha-Phenylethylamine 3886-69-9 C8H11N 详情 详情
(IX) 62030 (4S)-4-(3-cyanophenyl)-5-oxo-2-(trifluoromethyl)-1,4,5,6,7,8-hexahydro-3-quinolinecarboxylic acid C18H13F3N2O3 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 3-cyanobenzaldehyde (I) with trifluoroacetone (II) in piperidine gives 3-(4,4,4-trifluoro-3-oxo-2-butenyl)benzonitrile (III). The condensation of cyclohexane-1,3-dione (IV) with 1(R)-phenylethylamine (V) in refluxing toluene or THF yields the secondary enamine (VI), which is condensed with benzonitrile (III) by means of Tms-Cl in hot acetonitrile to afford the chiral adduct (VII). The cyclization of (VII) by means of NH3 in hot acetonitrile provides the chiral octahydroquinolone (VIII), which is finally dehydrated by means of TFA, MsOH, TsOH or HCl in refluxing acetonitrile to give the target hexahydroquinolone.

1 Patel, I.; Hopes, P. (AstraZeneca AB); Process for synthesis of alpha,beta-unsaturated ketones. WO 0210103 .
2 Patel, I.; Ashworth, I.; Levin, D. (AstraZeneca AB); Process for asymmetric synthesis of substd. 1,4-dihydropyridines. WO 0210134 .
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) 35450 3,3-dibromo-1,1,1-trifluoroacetone 431-67-4 C3HBr2F3O 详情 详情
(III) 62031 3-[(E)-4,4,4-trifluoro-3-oxo-1-butenyl]benzonitrile C11H6F3NO 详情 详情
(IV) 11244 1,3-Cyclohexanedione 504-02-9 C6H8O2 详情 详情
(V) 10039 (1R)-1-Phenylethylamine; (1R)-1-Phenyl-1-ethanamine.; L-alpha-Phenylethylamine 3886-69-9 C8H11N 详情 详情
(VI) 62032 3-{[(1R)-1-phenylethyl]amino}-2-cyclohexen-1-one C14H17NO 详情 详情
(VII) 62033 3-[(1S)-4,4-dimethyl-3-oxo-1-(6-oxo-2-{[(1R)-1-phenylethyl]amino}-1-cyclohexen-1-yl)pentyl]benzonitrile C28H32N2O2 详情 详情
(VIII) 62034 3-[(4S)-2-hydroxy-5-oxo-2-(trifluoromethyl)-1,2,3,4,5,6,7,8-octahydro-4-quinolinyl]benzonitrile C17H15F3N2O2 详情 详情

合成路线4

该中间体在本合成路线中的序号:(III)

The condensation of trifluoroacetoacetic acid ethyl ester (I) with cyclohexane-1,3-dione (II) and 3-cyanobenzaldehyde (III) by means of ammonium acetate in refluxing ethanol gives the octahydroquinolone (IV), which is hydrolyzed at its ester group by means of LiOH in hot ethanol/water to yield the corresponding carboxylic acid (V). Finally, this compound is dehydrated by means of TsOH in refluxing toluene to afford the target intermediate (rac)-4-(3-cyanophenyl)-5-oxo-2-(trifluoromethyl)-1,4,5,6,7,8-hexahydroquinoline-3-carboxylic acid (VI).

1 Ohnmacht, C.J.; Trainor, D.A.; Forst, J.M.; Stein, M.M.; Harris, R.J. (AstraZeneca plc); Quinolone and acridinone derivs. for the treatment of urinary incontinence. EP 0665834; JP 1996502282; US 5622964; WO 9408966 .
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) 62025 propyl 4,4,4-trifluoro-3-oxobutanoate C7H9F3O3 详情 详情
(II) 11244 1,3-Cyclohexanedione 504-02-9 C6H8O2 详情 详情
(III) 13245 3-Formylbenzonitrile; 3-Cyanobenzaldehyde 24964-64-5 C8H5NO 详情 详情
(IV) 62035 propyl 4-(3-cyanophenyl)-2-hydroxy-5-oxo-2-(trifluoromethyl)-1,2,3,4,5,6,7,8-octahydro-3-quinolinecarboxylate C21H21F3N2O4 详情 详情
(V) 62036 4-(3-cyanophenyl)-2-hydroxy-5-oxo-2-(trifluoromethyl)-1,2,3,4,5,6,7,8-octahydro-3-quinolinecarboxylic acid C18H15F3N2O4 详情 详情
(VI) 62029 4-(3-cyanophenyl)-5-oxo-2-(trifluoromethyl)-1,4,5,6,7,8-hexahydro-3-quinolinecarboxylic acid C18H13F3N2O3 详情 详情

合成路线5

该中间体在本合成路线中的序号:(I)

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6

该中间体在本合成路线中的序号:(I)

The reaction of 3-formylbenzonitrile (I) with methyl 2-bromoacetate (II) by means of activated Zn in hot THF gives 3-(3-cyanophenyl)-3-hydroxypropionic acid methyl ester (III), which is oxidized with activated MnO2 in hot dichloromethane yielding the oxoester (IV). The bromination of (IV) with NBS in CCl4 affords the alpha bromo derivative (V), which is cyclized with thioacetamide (VI) in hot THF affording 4-(3-cyanophenyl)-2-methylthiazole-5-carboxylic acid methyl ester (VII). The condensation of (VII) with 4'-amino-N-tert-butylbiphenyl-2-sulfonamide (VIII) by means of trimethylaluminum in toluene/dichloromethane gives the corresponding amide (IX), which is treated with hot TFA to eliminate the ter-butyl protecting group yielding intermediate (X). Finally, the cyano group of (X) is treated first with anhydrous HCl in methanol, and finally with ammonium carbonate in the same solvent to obtain the target amidine.

1 Quan, M.L.; Pinto, D.J.P.; Fevig, J.M.; Pruitt, J.R. (DuPont Pharmaceuticals Co.); Oxygen or sulfur containing heteroaromatics as fac. WO 9828282 .
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) 12309 methyl 2-bromoacetate; methyl bromoacetate 96-32-2 C3H5BrO2 详情 详情
(III) 28346 methyl 3-(3-cyanophenyl)-3-hydroxypropanoate C11H11NO3 详情 详情
(IV) 28347 methyl 3-(3-cyanophenyl)-3-oxopropanoate C11H9NO3 详情 详情
(V) 28348 methyl 2-bromo-3-(3-cyanophenyl)-3-oxopropanoate C11H8BrNO3 详情 详情
(VI) 19170 ethanethioamide 62-55-5 C2H5NS 详情 详情
(VII) 28349 methyl 4-(3-cyanophenyl)-2-methyl-1,3-thiazole-5-carboxylate C13H10N2O2S 详情 详情
(VIII) 23363 4'-amino-N-(tert-butyl)[1,1'-biphenyl]-2-sulfonamide C16H20N2O2S 详情 详情
(IX) 28350 N-[2'-[(tert-butylamino)sulfonyl][1,1'-biphenyl]-4-yl]-4-(3-cyanophenyl)-2-methyl-1,3-thiazole-5-carboxamide C28H26N4O3S2 详情 详情
(X) 28351 N-[2'-(aminosulfonyl)[1,1'-biphenyl]-4-yl]-4-(3-cyanophenyl)-2-methyl-1,3-thiazole-5-carboxamide C24H18N4O3S2 详情 详情

合成路线7

该中间体在本合成路线中的序号:(I)

3-Cyanobenzaldehyde (I) was converted to oxime (II) by reaction with hydroxylamine in pyridine. The intermediate nitrile oxide, generated from chlorination and further elimination of HCl, underwent a [2+3] cycloaddition with itaconic acid monomethyl ester (III) to produce the isoxazoline (IV). The carboxylate group of (IV) was then activated as the corresponding acid chloride (V) upon treatment with SOCl2. Boronic acid (VII) was prepared from N-tert-butyl benzenesulfonamide (VI) by lithiation with n-butyllithium, followed by reaction with triisopropyl borate and quenching with HCl. Subsequent Suzuki coupling of (VII) with 2-amino-5-bromopyrimidine (VIII) using Pd(PPh3)4 and Na2CO3 afforded the 2-amino-4-arylpyrimidine (IX). Condensation of amine (IX) with acid chloride (V) in the presence of Et3N gave amide (X). The N-tert-butyl group of (X) was then deprotected by means of trifluoroacetic acid to yield (XI) as the trifluoroacetate salt. The cyano group of (XI) was converted to imidate (XII) with HCl and MeOH. This was finally reacted with ammonium acetate in MeOH to furnish the title amidine.

1 Quan, M.L.; Liauw, A.Y.; Ellis, C.D.; et al.; Design and synthesis of isoxazoline derivatives as factor Xa inhibitors. 1. J Med Chem 1999, 42, 15, 2752.
2 Quan, M.L.; Wityak, J.; Galemmo, R.A. Jr.; Stouten, P.F.W.; Pruitt, J.R. (DuPont Pharmaceuticals Co.); Isoxazoline, isothiazoline and pyrazoline factor Xa inhibitors. EP 0874629; US 5939418; WO 9723212 .
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) 23357 3-[(hydroxyimino)methyl]benzonitrile C8H6N2O 详情 详情
(III) 34820 2-(2-methoxy-2-oxoethyl)acrylic acid 7338-27-4 C6H8O4 详情 详情
(IV) 26630 3-(3-cyanophenyl)-5-(2-methoxy-2-oxoethyl)-4,5-dihydro-5-isoxazolecarboxylic acid C14H12N2O5 详情 详情
(V) 34821 methyl 2-[5-(chlorocarbonyl)-3-(3-cyanophenyl)-4,5-dihydro-5-isoxazolyl]acetate C14H11ClN2O4 详情 详情
(VI) 26626 N-(tert-butyl)benzenesulfonamide C10H15NO2S 详情 详情
(VII) 26627 2-[(tert-butylamino)sulfonyl]phenylboronic acid C10H16BNO4S 详情 详情
(VIII) 34822 5-bromo-2-pyrimidinamine; 5-bromo-2-pyrimidinylamine 7752-82-1 C4H4BrN3 详情 详情
(IX) 34823 2-(2-amino-5-pyrimidinyl)-N-(tert-butyl)benzenesulfonamide C14H18N4O2S 详情 详情
(X) 34824 methyl 2-[5-[[(5-[2-[(tert-butylamino)sulfonyl]phenyl]-2-pyrimidinyl)amino]carbonyl]-3-(3-cyanophenyl)-4,5-dihydro-5-isoxazolyl]acetate C28H28N6O6S 详情 详情
(XI) 34825 methyl 2-[5-[([5-[2-(aminosulfonyl)phenyl]-2-pyrimidinyl]amino)carbonyl]-3-(3-cyanophenyl)-4,5-dihydro-5-isoxazolyl]acetate C24H20N6O6S 详情 详情
(XII) 34826 methyl 2-(5-[([5-[2-(aminosulfonyl)phenyl]-2-pyrimidinyl]amino)carbonyl]-3-[3-[imino(methoxy)methyl]phenyl]-4,5-dihydro-5-isoxazolyl)acetate C25H24N6O7S 详情 详情

合成路线8

该中间体在本合成路线中的序号:(IV)

The title compound is prepared according to the Ugi reaction by combination of the four components: isocyanide (III), m-cyanobenzaldehyde (IV), 2-benzoylbenzoic acid (V), and histamine (VI) in refluxing MeOH

1 Hirth, B.H.; Bernasconi, R.; Biemann, H.P.; et al.; Discovery of TNF-alpha induced apoptosis inhibitors with activity in a murine model of multiple sclerosis: Glycine diamides. 224th ACS Natl Meet (Aug 18 2002, Boston) 2002, Abst MEDI 272.
2 Hirth, B.H.; Sneddon, S.F.; Kane, J.L.; Vinick, F.; Qiao, S.; Nahill, S.R. (Genzyme Corp.); Modulators of TNF-alpha signaling. WO 0187849 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(III) 60310   C15H13N 详情 详情
(IV) 13245 3-Formylbenzonitrile; 3-Cyanobenzaldehyde 24964-64-5 C8H5NO 详情 详情
(V) 59365 2-benzophenone carboxylic acid; 2-Benzoylbenzoic acid; 2-Carboxybenzophenone; Benzophenone-2-carboxylic acid; O-benzoylbenzoic acid 85-52-9 C14H10O3 详情 详情
(VI) 60311 2-(1H-imidazol-5-yl)-1-ethanamine; 2-(1H-imidazol-5-yl)ethylamine C5H9N3 详情 详情
Extended Information