Byung Soo Youn,Jun Hwan Kim,Han Soo Kim,Ho Sup Yoon,Ik Hwan Kim
申请号：
US16036949
公开号：
US10370364B1
申请日:
2018.07.17
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A compound represented by the following Formula 1 or a pharmaceutically acceptable salt thereof:wherein R1 is a substituted or unsubstituted C1-5 linear or branched alkyl, a C5-6 cycloalkyl, a C5-6 cycloalkyl containing at least one heteroatom selected from among O and N, a substituted or unsubstituted C6-12 aryl, or a C5-6 heteroaryl containing at least one heteroatom selected from among O and N； R2 is hydrogen, ethyl, acetyl, acetoxy, carboxy, benzoyloxy or 3,4,5-trihydroxybenzoyloxy； and R3 to R5 are each independently hydrogen, hydroxyl, methyl, methoxy, acetoxy, carboxy or benzoyloxy.
