;wherein R1 and R2 are selected from the group consisting of a hydrogen, a C1-11 alkyl group; R3 and R4 are selected from the group consisting of a hydrogen, a C1-11 alkyl group, a C3-10 aryl group, a C1-2CO2H carboxyalkyl group; and X represents hydrogen or a lower alkoxy group having 1 to 6 carbons."/>
公开/公告号US6316493B1
专利类型
公开/公告日2001-11-13
原文格式PDF
申请/专利号US20000539574
申请日2000-03-31
分类号A61K313/35;C07D3230/60;
国家 US
入库时间 2022-08-22 00:48:38