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【结 构 式】

【分子编号】28910

【品名】benzhydryl (6R,7R)-7-amino-3-[[(1-methyl-1H-1,2,3,4-tetraazol-5-yl)sulfanyl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

【CA登记号】

【 分 子 式 】C23H22N6O3S2

【 分 子 量 】494.59832

【元素组成】C 55.85% H 4.48% N 16.99% O 9.7% S 12.97%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(IV)

The condensation of 4-ethyl-2,3-dioxo-1-piperazinecarbonyl chloride (I) with threonine (II) in methylene chloride gives alpha-(4-ethyl-2,3-dioxo-1-piperazinecarboxamido)-beta-hydroxybutyric acid (III), which is then condensed with diphenylmethyl 7-beta-amino-3-[(1-methyltetrazol-5-yl)thiometnyl)-Delta3-cephem-4-carboxylate (IV) by means of ethyl chloroformate and N-methyl morpholine yielding diphenylmethyl 7-beta-[alpha-(4-ethyl-2,3-dioxo-1-piperazi-necarboxamido)-beta-hydroxybutyramido]-3-(11-methyltetrazol-5-yl)thiomethyl]-Delta3-cephem-4-carboxylate (V). The methoxylation of (V) with lithium methoxide-methylene chloride THF affords diphenyl methyl 7-beta-[alpha-(4-ethyl-2,3-dioxo-1-piperazinecarboxamido)-beta-hydroxybutyramido]-7-alpha-methoxy-3-[(1-methyltetrazol-5-yl)thiamethyl-Delta3-cephem-4-carboxylate (VI), which is finally hydrolyzed with trifluoroacetic acid, and treated with NaHCO3 to obtain the sodium salt.

1 Saikawa, I.; et al. (Toyama Chemical Co., Ltd.); Novel 7alpha-methoxycephalosporins and process for producing the same. FR 2455051; GB 2048241; JP 80141.491; JP 8125188; US 4263292 .
2 Burnie, J.; Serradell, M.N.; Castaner, J.; Cefbuperazone Sodium. Drugs Fut 1985, 10, 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
(I) 24305 4-ethyl-2,3-dioxo-1-piperazinecarbonyl chloride 59703-00-3 C7H9ClN2O3 详情 详情
(II) 28908 L-Threonine; (2R,3S)-2-amino-3-hydroxybutyric acid 632-20-2 C4H9NO3 详情 详情
(III) 28909 (2R,3S)-2-[[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]-3-hydroxybutyric acid C11H17N3O6 详情 详情
(IV) 28910 benzhydryl (6R,7R)-7-amino-3-[[(1-methyl-1H-1,2,3,4-tetraazol-5-yl)sulfanyl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate C23H22N6O3S2 详情 详情
(V) 28911 benzhydryl (6R,7R)-7-[((2R,3S)-2-[[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]-3-hydroxybutanoyl)amino]-3-[[(1-methyl-1H-1,2,3,4-tetraazol-5-yl)sulfanyl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate C34H37N9O8S2 详情 详情
(VI) 28912 benzhydryl (6R,7S)-7-[((2R,3S)-2-[[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]-3-hydroxybutanoyl)amino]-7-methoxy-3-[[(1-methyl-1H-1,2,3,4-tetraazol-5-yl)sulfanyl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate C35H39N9O9S2 详情 详情
Extended Information