• English
  • 简体中文
Login Register
Current Location: Home > Feedback Help Print

【结 构 式】

【分子编号】12488

【品名】tert-butyl N-[(1S,2R)-2-hydroxy-1-phenyl-2-(1,3-thiazol-2-yl)ethyl]carbamate

【CA登记号】

【 分 子 式 】C16H20N2O3S

【 分 子 量 】320.41248

【元素组成】C 59.98% H 6.29% N 8.74% O 14.98% S 10.01%

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:(VI)

A new method for the synthesis of the docetaxel side-chain has been reported: The esterification of (S)-phenylglycine (I) with SOCl2 and methanol gives the corresponding methyl ester (II), which is acylated with tert-butoxycarbonyl anhydride to the tert-butoxycarbonyl derivative (III). The reduction of (III) with dibutylaluminum hydride (DIBAL) in toluene yields the corresponding aldehyde (IV), which is condensed with 2-(trimethylsilyl)thiazole (V) by means of tetrabutylammonium fluoride (TBAF) to afford the (1R,2S)-N-[2-hydroxy-1-phenyl-2-(2-thiazolyl)ethyl]carbamic acid tert-butyl ester (VI) with 88% enantiomeric purity. The cyclization of (VI) with 2,2-dimethoxypropane (VII) catalyzed by camphosulfonic acid (CSA) gives (4S,5R)-3-(tert-butoxycarbonyl)-2,3-dimethyl-4-phenyl-5-(2-thiazolyl)ox azolidine (VIII), which is treated with methyl trifluoromethanesulfonate to afford (4S,5R)-3-(tert-butoxycarbonyl)-2,2-dimethyl-4-phenyloxazolidine-5-carb aldehyde (IX). Finally, this compound is oxidized with KMnO4 in tert-butanol/aqueous potassium phosphate buffer to yield the corresponding carboxylic acid, the (4S,5R)-3-(tert-butoxycarbonyl)-2,2-dimethyl-4-phenyloxazolidine-5-carb oxylic acid (X), the side-chain of taxotere suitably protected.

1 Semola, T.; Dondoni, A.; Perrone, D.; Synthesis of Taxol and Taxotere side chains by 2-(trimethylsilyl)thiazole based homologation of L-phenylglycine. Synthesis 1995, 2, 2, 181.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
13214 Di-tert-butyldicarbonate; Dicarbonic acid bis(1,1-dimethylethyl) ester; dicarbonic acid di-tert-butyl ester pyrocarbonic acid di-tert-butyl ester; bis(1,1-dimethylethyl) dicarbonate di-tert-butyl pyrocarbonate 24424-99-5 C10H18O5 详情 详情
(I) 10716 (2S)-2-Amino-2-phenylethanoic acid; L-(+)-alpha-Phenylglycine 2935-35-5 C8H9NO2 详情 详情
(II) 10717 methyl (2S)-2-amino-2-phenylethanoate C9H11NO2 详情 详情
(III) 12485 methyl (2S)-2-[(tert-butoxycarbonyl)amino]-2-phenylethanoate C14H19NO4 详情 详情
(IV) 45428 tert-butyl (1S)-2-oxo-1-phenylethylcarbamate C13H17NO3 详情 详情
(V) 10720 2-(Trimethylsilyl)-1,3-thiazole 79265-30-8 C6H11NSSi 详情 详情
(VI) 12488 tert-butyl N-[(1S,2R)-2-hydroxy-1-phenyl-2-(1,3-thiazol-2-yl)ethyl]carbamate C16H20N2O3S 详情 详情
(VII) 10722 1-Methoxy-1-methylethyl methyl ether; 2,2-Dimethoxypropane 77-76-9 C5H12O2 详情 详情
(VIII) 12490 tert-butyl (4S,5R)-2,2-dimethyl-4-phenyl-5-(1,3-thiazol-2-yl)-1,3-oxazolane-3-carboxylate C19H24N2O3S 详情 详情
(IX) 12491 tert-butyl (4S,5R)-5-formyl-2,2-dimethyl-4-phenyl-1,3-oxazolane-3-carboxylate C17H23NO4 详情 详情
(X) 12492 (4S,5R)-3-(tert-Butoxycarbonyl)-2,2-dimethyl-4-phenyl-1,3-oxazolane-5-carboxylic acid C17H23NO5 详情 详情
Extended Information