wherein R1 represents 1 to 3 atoms or substituents selected from a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl, cycloalkyl, alkylene, or alkoxy group, and a protected or unprotected hydroxyl or carboxyl group, R2 represents a protected or unprotected carboxyl group, R3 represents 1 or 2 atoms or substituents selected from a hydrogen atom, a halogen atom, an oxo group, a substituted or unsubstituted alkyl or alkoxy group, and a protected or unprotected carboxyl group, A represents an alkylene group, and B represents an oxygen atom, a sulfur atom, or a group shown by the following formula,;
公开/公告号US8198447B2
专利类型
公开/公告日2012-06-12
原文格式PDF
申请/专利号US20100704051
申请日2010-02-11
分类号C07D471/04;C07D491/052;C07D495/04;
国家 US
入库时间 2022-08-21 17:30:31