3-Amino-5-(substituted)-2 (1H) pyridinones and 3-cyano compounds useful as cardiotonics and preparation thereof
申请人:STERLING DRUG INC.
公开号:EP0061774A2
公开(公告)日:1982-10-06
1-R1-3-amino-5-(3-R'-4-R"-phenyl)-6-R-2(1H)-pyridi- nones or salts thereof, which are useful as cardiotonics, where R, is hydrogen, lower-alkyl, or lower-hydroxyalkyl, R is hydrogen or lower-alkyl, and, R' and R" are each hydrogen, hydroxy or amino at least one of R' or R" being other than hydrogen, are prepared by reacting the corresponding 3-carbamyl compound with a reagent capable of converting carbamyl to amino or by first reacting the corresponding 3-carbamyl compound where R' and R" are each hydrogen, nitro or lower-alkoxy with a reagent capable of converting carbamyl to amino and then reacting the resulting 3-amino compound where R' and/or R" are/is lower-alkoxy and/or nitro with a reagent capable of converting lower-alkoxy to hydroxy and/or with a reagent capable of converting nitro to amino. Preparation of the corresponding 3-carbamyl and 3-cyano compounds are described. The invention also concerns the 3- and/or 4-methoxy intermediates and certain novel 3-cyano analogs. Cyano compounds are also useful as cardiotonics.
1-R1-3-氨基-5-(3-R'-4-R"-苯基)-6-R-2(1H)-吡啶-壬烷或其盐,可用作强心剂,其中 R 是氢、低级烷基或低级羟基烷基,R 是氢或低级烷基,R'和 R "各自是氢、羟基或氨基,R'或 R "中至少有一个不是氢、将相应的 3-氨基甲酰基化合物与能将氨基甲酰基转化为氨基的试剂反应,或先将 R' 和 R "均为氢、硝基或低级烷氧基的相应 3-氨基甲酰基化合物与能将氨基甲酰基转化为氨基的试剂反应,然后将所得 R' 和/或 R "为/或低级烷氧基和/或硝基的 3-氨基化合物与能将低级烷氧基转化为羟基的试剂和/或能将硝基转化为氨基的试剂反应,制备 3-氨基甲酰基化合物。本发明描述了相应的 3-氨基甲酰基和 3-氰基化合物的制备方法。本发明还涉及 3-和/或 4-甲氧基中间体和某些新型 3-氰基类似物。氰基化合物还可用作强心剂。