申请人:Eli Lilly and Company
公开号:US04355172A1
公开(公告)日:1982-10-19
Process for 4-(D-3-amino-3-carboxypropoxy)phenylglyoxylic acid oxime as an amino-protected ester comprising alkylating an amino-protected D-methionine silyl ester with an alkyl or benzyl iodide; cyclizing the alkylsulfonium iodide to an amino-protected D-homoserine lactone; hydrolyzing the lactone to an amino-protected D-homoserine in aqueous base; coupling, to form an ether, the amino-protected D-homoserine as an ester with an ester of 4-hydroxyphenylglyoxylic acid; and forming the oxime of the ether or alternatively coupling the D-homoserine ester with a protected-oxime of an esterified 4-hydroxyphenylglyoxylic acid. The product is useful in preparing the antibiotic FR 1923.
制备4-(D-3-
氨基-3-羧基丙氧基)
苯乙酰基肟的方法包括:用烷基或苯基
碘化物烷基化
氨基保护的
D-蛋氨酸硅酯酯;将烷基磺鎓
碘化物环化为
氨基保护的
D-脯氨酸内酯;在
水性碱中
水解内酯为
氨基保护的
D-脯氨酸;将
氨基保护的
D-脯氨酸以酯的形式与
4-羟基
苯乙酰基酸酯形成醚键;或将
D-脯氨酸酯与保护氧
肟化的酯化
4-羟基
苯乙酰基酸酯偶联,从而形成该醚的
肟。该产品在制备抗生素FR 1923方面有用。