申请人:OSTEONEUROGEN INC.
公开号:US10370364B1
公开(公告)日:2019-08-06
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.
下式 1 所代表的化合物或其药学上可接受的盐:
其中 R1 是取代或未取代的 C1-5 直链或支链烷基、C5-6 环烷基、含有至少一个选自 O 和 N 的杂原子的 C5-6 环烷基、取代或未取代的 C6-12 芳基或含有至少一个选自 O 和 N 的杂原子的 C5-6 杂芳基;R2 是氢、乙基、乙酰基、乙酰氧基、羧基、苯甲酰氧基或 3,4,5-三羟基苯甲酰氧基;以及 R3 至 R5 各自独立地是氢、羟基、甲基、甲氧基、乙酰氧基、羧基或苯甲酰氧基。