申请人:E. R. Squibb & Sons, Inc.
公开号:US04594199A1
公开(公告)日:1986-06-10
A method is provided for preparing phosphinic acid prodrug intermediates which are useful in preparing phosphinic acid angiotensin-converting enzyme inhibitors which method includes the step of coupling a phosphonous acid or its ester of the structure ##STR1## wherein R is H or lower alkyl and R.sup.1 is lower alkyl, aryl, arylalkyl, cycloalkyl or cycloalkylalkyl, with a conjugated compound of the structure ##STR2## wherein R.sup.2, R.sup.3 and R.sup.4 may be the same or different and each is independently H, lower alkyl or aryl, and Z is --CO.sub.2 R.sup.5 (wherein R.sup.5 is H or lower alkyl), ##STR3## (wherein R.sup.6 is H, lower alkyl aryl or arylalkyl), ##STR4## (wherein R.sup.7 and R.sup.8 are the same or different and are selected from the group consisting of H, lower alkyl, aryl, aryl-lower alkyl, cycloalkyl or cycloalkylalkyl and at least one of R.sup.7 and R.sup.8 is other than H, or R.sup.7 and R.sup.8 can be taken together with N to form a 5-, 6- or 7-membered heterocyclic ring ##STR5## which may or may not include a COOR.sup.5 substituent, which 5- or 6-membered N-containing ring may or may not be fused to an aryl ring), in the presence of a silylating agent, to form the phosphonic acid intermediate of the structure ##STR6## wherein R, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 and Z are as defined above.
提供了一种制备磷酸前药中间体的方法,该方法用于制备磷酸盐肽酶抑制剂,其中该方法包括以下步骤:将具有结构##STR1##的磷酸盐或其酯(其中R为H或低碳烷基,R.sup.1为低碳烷基、芳基、芳基烷基、环烷基或环烷基烷基)与具有结构##STR2##的共轭化合物偶联,其中R.sup.2、R.sup.3和R.sup.4可以相同也可以不同,且每个独立地为H、低碳烷基或芳基,Z为--CO.sub.2 R.sup.5(其中R.sup.5为H或低碳烷基),##STR3##(其中R.sup.6为H、低碳烷基、芳基或芳基烷基),##STR4##(其中R.sup.7和R.sup.8可以相同也可以不同,选自H、低碳烷基、芳基、芳基-低碳烷基、环烷基或环烷基烷基群,且R.sup.7和R.sup.8中至少有一个不是H,或R.sup.7和R.sup.8可以与N一起形成5、6或7-成员杂环环##STR5##,该环可能包括或不包括COOR.sup.5取代基,该含N的5-或6-成员环可能与芳基环融合或不融合),在硅基化剂存在下,形成结构为##STR6##的磷酸中间体,其中R、R.sup.1、R.sup.2、R.sup.3和R.sup.4以及Z如上定义。