申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04010178A1
公开(公告)日:1977-03-01
Carbonic acid esters of the formula substituent(s) substituents(s) R'.sub.1 OCOOR'.sub.2 wherein R'.sub.1 is lower alkyl which may have substituent)s) selected from the group of halogen, lower alkoxy and aryloxy, or ar(lower)-alkyl which may have substituents)s) selected from the group of lower alkoxy, halogen, nitro and cyano, and R'.sub.2 is benzotriazolyl which may have halogen; or a group represented by the formula: ##STR1## wherein Y' and Z' are each cyano, nitro, carbamoyl, esterified carboxy, lower alkanoyl, aroyl or disubstituted carbamoyl; provided that when R'.sub.2 is a group represented by the formula: ##STR2## wherein Y' and Z' are each cyano, nitro, carbamoyl or esterified carboxy, R'.sub.1 is ar(lower) alkyl having substituent(s) selected from the group of lower alkoxy, halogen, nitro and cyano. A process for the protection of amino and/or imino groups in compounds containing them by reacting them with the aforementioned esters is also disclosed.
公式中的碳酸酯基团R'.sub.1 OCOOR'.sub.2,其中R'.sub.1是较低的烷基,可能具有来自卤素、较低的烷氧基和芳基的基团,或者是芳基-较低烷基,可能具有来自较低烷氧基、卤素、硝基和氰基的基团;R'.sub.2是苯并三唑基,可能具有卤素;或者是由以下公式表示的基团:##STR1## 其中Y'和Z'分别是氰基、硝基、氨基甲酰基、酯化羧基、较低的烷酰基、芳酰基或二取代的氨基甲酰基;但是当R'.sub.2是由以下公式表示的基团时:##STR2## 其中Y'和Z'分别是氰基、硝基、氨基甲酰基或酯化羧基时,R'.sub.1是芳基-较低烷基,具有来自较低烷氧基、卤素、硝基和氰基的基团。还公开了一种通过将含有氨基和/或亚氨基基团的化合物与上述酯反应来保护它们的方法。