【结 构 式】 |
【分子编号】21434 【品名】methyl (2S)-2-(2-benzoylanilino)-3-(4-hydroxyphenyl)propanoate 【CA登记号】 |
【 分 子 式 】C23H21NO4 【 分 子 量 】375.42408 【元素组成】C 73.58% H 5.64% N 3.73% O 17.05% |
合成路线1
该中间体在本合成路线中的序号:(IV)Condensation of L-tyrosine methyl ester (I) with 2-benzoylcyclohexanone (II) in the presence of Pd/C in boiling anisole produced the vinylogous amide intermediate (III) which, in the reaction conditions, experienced a dehydrogenation to furnish benzophenone (IV). Then, coupling of (IV) with 2-(5-methyl-2-phenyloxazol-4-yl)ethanol (V) under Mitsunobu conditions afforded ether (VI). Finally, the ester function of (VI) was hydrolyzed with LiOH to give the title acid.
【1】 Martín, L.; Sorbera, L.A.; Leeson, P.A.; Castañer, J.; Farglitazar. Drugs Fut 2001, 26, 4, 354. |
【2】 N-(2-Benzoylphenyl)-L-tyrosine PPARgamma agonists. 1. Discovery of a novel serieis of potent antihyperglycemic and antihyperlipidemic agents. J Med Chem 1998, 41, 25, 5020. |
【3】 Willson, T.M.; Mook, R.A. Jr.; Kaldor, I.; Henke, B.R.; Deaton, D.N.; Collins, J.L.; Cobb, J.E.; Brackeen, M.; Sharp, M.J.; O'Callaghan, J.M.; Erickson, G.A.; Boswell, G.E. (Glaxo Wellcome plc); Substd. 4-hydroxy-phenylalkanoic acid derivs. with agonist activity to PPAR-gamma. EP 0888317; JP 2000507216; WO 9731907 . |
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) | 21431 | methyl (2S)-2-amino-3-(4-hydroxyphenyl)propanoate | 1080-06-4 | C10H13NO3 | 详情 | 详情 |
(II) | 21432 | 2-benzoylcyclohexanone | 3580-38-9 | C13H14O2 | 详情 | 详情 |
(III) | 21433 | methyl (2S)-2-[(2-benzoyl-1-cyclohexen-1-yl)amino]-3-(4-hydroxyphenyl)propanoate | C23H25NO4 | 详情 | 详情 | |
(IV) | 21434 | methyl (2S)-2-(2-benzoylanilino)-3-(4-hydroxyphenyl)propanoate | C23H21NO4 | 详情 | 详情 | |
(V) | 19874 | 2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)-1-ethanol | C12H13NO2 | 详情 | 详情 | |
(VI) | 21436 | methyl (2S)-2-(2-benzoylanilino)-3-[4-[2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)ethoxy]phenyl]propanoate | C35H32N2O5 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号:(III)The 2-aminobenzophenone derivative (III) was prepared by condensation of L-tyrosine methyl ester (I) with 2-benzoylcyclohexanone (II) in refluxing anisole, with concomitant dehydrogenation in the presence of Pd/C. Subsequent Mitsunobu coupling of (III) with 2-(N-Boc-N-methylamino)ethanol (V), prepared from aminoalcohol (IV) and Boc2O, afforded the Boc-protected aminoethyl ether (VI). After removal of the Boc group of (VI) by treatment with trifluoroacetic acid, condensation of the resulting secondary amine (VII) with 2-fluoropyridine (VIII) yielded the 2-aminopyridine derivative (IX). Finally, the methyl ester group of (IX) was hydrolyzed to the title carboxylic acid using LiOH.
【1】 N-(2-Benzoylphenyl)-L-tyrosine PPARgamma agonists. 1. Discovery of a novel serieis of potent antihyperglycemic and antihyperlipidemic agents. J Med Chem 1998, 41, 25, 5020. |
【2】 Willson, T.M.; Mook, R.A. Jr.; Kaldor, I.; Henke, B.R.; Deaton, D.N.; Collins, J.L.; Cobb, J.E.; Brackeen, M.; Sharp, M.J.; O'Callaghan, J.M.; Erickson, G.A.; Boswell, G.E. (Glaxo Wellcome plc); Substd. 4-hydroxy-phenylalkanoic acid derivs. with agonist activity to PPAR-gamma. EP 0888317; JP 2000507216; WO 9731907 . |
中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
---|---|---|---|---|---|---|
23767 | Methoxybenzene; Methyl phenyl ether; Anisole | 100-66-3 | C7H8O | 详情 | 详情 | |
(I) | 21431 | methyl (2S)-2-amino-3-(4-hydroxyphenyl)propanoate | 1080-06-4 | C10H13NO3 | 详情 | 详情 |
(II) | 21432 | 2-benzoylcyclohexanone | 3580-38-9 | C13H14O2 | 详情 | 详情 |
(III) | 21434 | methyl (2S)-2-(2-benzoylanilino)-3-(4-hydroxyphenyl)propanoate | C23H21NO4 | 详情 | 详情 | |
(IV) | 13324 | 2-Methylaminoethanol; 2-(Methylamino)-1-ethanol | 109-83-1 | C3H9NO | 详情 | 详情 |
(V) | 34509 | tert-butyl 2-hydroxyethyl(methyl)carbamate | C8H17NO3 | 详情 | 详情 | |
(VI) | 34510 | methyl (2S)-2-(2-benzoylanilino)-3-(4-[2-[(tert-butoxycarbonyl)(methyl)amino]ethoxy]phenyl)propanoate | C31H36N2O6 | 详情 | 详情 | |
(VII) | 34511 | methyl (2S)-2-(2-benzoylanilino)-3-[4-[2-(methylamino)ethoxy]phenyl]propanoate | C26H28N2O4 | 详情 | 详情 | |
(VIII) | 34512 | 2-fluoropyridine | 372-48-5 | C5H4FN | 详情 | 详情 |
(IX) | 34513 | methyl (2S)-2-(2-benzoylanilino)-3-(4-[2-[methyl(2-pyridinyl)amino]ethoxy]phenyl)propanoate | C31H31N3O4 | 详情 | 详情 |
合成路线3
该中间体在本合成路线中的序号:(III)Condensation of L-tyrosine methyl ester (I) with 2-benzoylcylohexanone (II) and subsequent dehydrogenation in refluxing anisole in the presence of Pd/C affords the benzophenone derivative (III), which is converted into carboxylic acid (V) by Mitsunobu reaction with heterocyclic alcohol (IV) by means of PPh3 and DEAD in THF followed by saponification of the resulting methyl ester with LiOH in THF/MeOH (1). Coupling of (V) with valinol (VI) by means of HOBt/Et3N and EDC·HCl in CH2Cl2 furnishes amide (VII), which is oxidized by means of 4-methylmorpholine (NMM) and TPAP in CH2Cl2 to furnish aldehyde (VIII). Finally, the desired oxazole is obtained by intramolecular cyclization of (VIII) by means of iodine, PPh3 and Et3N in CH2Cl2.
【1】 N-(2-Benzoylphenyl)-L-tyrosine PPARgamma agonists. 1. Discovery of a novel serieis of potent antihyperglycemic and antihyperlipidemic agents. J Med Chem 1998, 41, 25, 5020. |
【2】 Cobb, J.E.; Shearer, B.G.; Lambert, M.H. III; Milburn, M.V. (Glaxo Group Ltd.); Oxazole PPAR antagonists. WO 0117994 . |
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) | 21431 | methyl (2S)-2-amino-3-(4-hydroxyphenyl)propanoate | 1080-06-4 | C10H13NO3 | 详情 | 详情 |
(II) | 21432 | 2-benzoylcyclohexanone | 3580-38-9 | C13H14O2 | 详情 | 详情 |
(III) | 21434 | methyl (2S)-2-(2-benzoylanilino)-3-(4-hydroxyphenyl)propanoate | C23H21NO4 | 详情 | 详情 | |
(IV) | 19874 | 2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)-1-ethanol | C12H13NO2 | 详情 | 详情 | |
(V) | 48285 | (2S)-2-(2-benzoylanilino)-3-[4-[2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)ethoxy]phenyl]propionic acid | C34H30N2O5 | 详情 | 详情 | |
(VI) | 48289 | 2-amino-3-methyl-1-butanol; DL-Valinol | 473-75-6 | C5H13NO | 详情 | 详情 |
(VII) | 48287 | (2S)-2-(2-benzoylanilino)-N-[1-(hydroxymethyl)-2-methylpropyl]-3-[4-[2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)ethoxy]phenyl]propanamide | C39H41N3O5 | 详情 | 详情 | |
(VIII) | 48288 | (2S)-2-(2-benzoylanilino)-N-(1-formyl-2-methylpropyl)-3-[4-[2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)ethoxy]phenyl]propanamide | C39H39N3O5 | 详情 | 详情 |
合成路线4
该中间体在本合成路线中的序号:(III)Condensation of L-tyrosine methyl ester (I) with 2-benzoylcylohexanone (II) and subsequent dehydrogenation in refluxing anisole in the presence of Pd/C affords the benzophenone derivative (III), which is converted into carboxylic acid (V) by Mitsunobu reaction with heterocyclic alcohol (IV) by means of PPh3 and DEAD in THF followed by saponification of the resulting methyl ester with LiOH in THF/MeOH (1). Coupling of (V) with acetic acid hydrazide (VI) by means of HOBt/Et3N and EDC.HCl in CH2Cl2 furnishes the diacyl hydrazide (VII), which is finally converted into the desired thiadiazole derivative by treatment with Lawesson's Reagent in refluxing toluene.
【1】 N-(2-Benzoylphenyl)-L-tyrosine PPARgamma agonists. 1. Discovery of a novel serieis of potent antihyperglycemic and antihyperlipidemic agents. J Med Chem 1998, 41, 25, 5020. |
【2】 Cobb, J.E.; Shearer, B.G.; Lambert, M.H. III; Milburn, M.V. (Glaxo Group Ltd.); Oxazole PPAR antagonists. WO 0117994 . |
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) | 21431 | methyl (2S)-2-amino-3-(4-hydroxyphenyl)propanoate | 1080-06-4 | C10H13NO3 | 详情 | 详情 |
(II) | 21432 | 2-benzoylcyclohexanone | 3580-38-9 | C13H14O2 | 详情 | 详情 |
(III) | 21434 | methyl (2S)-2-(2-benzoylanilino)-3-(4-hydroxyphenyl)propanoate | C23H21NO4 | 详情 | 详情 | |
(IV) | 19874 | 2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)-1-ethanol | C12H13NO2 | 详情 | 详情 | |
(V) | 48285 | (2S)-2-(2-benzoylanilino)-3-[4-[2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)ethoxy]phenyl]propionic acid | C34H30N2O5 | 详情 | 详情 | |
(VI) | 29262 | acetohydrazide | 1068-57-1 | C2H6N2O | 详情 | 详情 |
(VII) | 48286 | (2S)-N'-acetyl-2-(2-benzoylanilino)-3-[4-[2-(5-methyl-2-phenyl-1,3-oxazol-4-yl)ethoxy]phenyl]propanohydrazide | C36H34N4O5 | 详情 | 详情 |