Highly stereocontrolled synthesis of the key intermediate of 1β-methylcarbapenem antibiotic via intramolecular nitrone 1,3-dipolar cycloaddition
作者:Masataka Ihara、Masanobu Takahashi、Keiichiro Fukumoto、Tetsuji Kametani
DOI:10.1039/c39880000009
日期:——
The key synthetic intermediate of 1β-methylcarbapenem antibiotic, (–)-(3S, 4R)-3-[(1R)-1-t- butyl-dimethylsiloxyethyl]-4-[(2R)-2-(1-hydroxypropyl)]azetidin-2-one (2), was synthesised from (R)-methyl 3-hydroxy-2-methylpropionate with high stereoselectivity via intramolecular nitrone 1,3-dipolar cycloaddition.
1β-甲基卡巴培南抗生素的关键合成中间体(-)-(3 S,4 R)-3-[(1 R)-1-叔丁基-二甲基甲硅烷氧基乙基] -4-[(2 R)-2-(通过分子内的硝酮1,3-偶极环加成反应,由(R)-3-羟基-2-甲基丙酸甲酯以高的立体选择性合成1-羟丙基)]氮杂环丁烷-2-酮(2)。