Nobuyoshi Yasuda,Jeffrey T. Kuethe,Guy Humphrey,Gregory L. Beutner,Yong-Li Zhong,Edward Cleator,Carl Baxter
申请号：
US14239391
公开号：
US09073825B2
申请日:
2012.08.16
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A first aspect of the present invention describes a compound selected from group consisting of:wherein R is either H, C(O)RA, or C(O)NHCH(X)COOH provided that X is a C2-C6 alkyl, or a C3-C8 cycloalkyl and RA is a C1-6 alkyl or arylThese compounds are used to make Compound A
