申请人:Sumitomo Pharmaceuticals Company, Limited
公开号:US05134231A1
公开(公告)日:1992-07-28
An amino acid compound of the formula: ##STR1## wherein R is a lower alkyl group, R.sub.1 is a hydrogen atom or a protecting group for carboxyl, R.sub.2 is a hydrogen atom, a protecting group for amino, an optionally substituted allyl group of the formula: ##STR2## (wherein R.sub.3 and R.sub.4 are each a hydrogen atom, a lower alkyl group or an aryl group), a beta-hydroxyethyl group in which the hydroxyl group is optionally protected, a formylmethyl group in which the formyl group is optionally protected, a carboxymethyl group in which the carboxyl group is protected or a 2-furylmethyl group and X is an optionally protected carboxyl group, a hydroxymethyl group in which the hydroxyl group is optionally protected or a substituted mercaptomethyl group of the formula: --CH.sub.2 SR.sub.5 (wherein R.sub.5 is an aryl group or an ar(lower)alkyl group), which is a useful intermediate in the synthesis of 1-alkylcarbapenem compounds.
该化合物为氨基酸化合物,化学式为:##STR1## 其中R为较低的烷基基团,R.sub.1为氢原子或羧基的保护基团,R.sub.2为氢原子、氨基的保护基团,或是一个可选取代的烯丙基团,化学式为:##STR2##(其中R.sub.3和R.sub.4分别为氢原子、较低的烷基基团或芳基基团),β-羟乙基基团中的羟基可能被保护,甲酰甲基基团中的甲酰基可能被保护,羧甲基基团中的羧基被保护,或者2-呋喃甲基基团,X为可选的保护羧基,羟甲基基团中的羟基可能被保护,或者一个被取代的巯基甲基基团,化学式为:--CH.sub.2SR.sub.5(其中R.sub.5为芳基或烷基基团),这是合成1-烷基卡巴比林类化合物中的有用中间体。