申请人:Patel Jiten Ranchhodbhai
公开号:US20110172226A1
公开(公告)日:2011-07-14
The present invention relates to compounds of formula I or salts thereof, wherein, R
1
is selected from the group consisting of hydrogen and R
4
; R
2
is selected from the group consisting of hydrogen, acetyl and R
4
; R
3
is selected from the group consisting of alkyl, —O-alkyl, —NH-alkyl, aryl and heterocyclyl; R
4
represents a moiety (A) wherein, X is selected from the group consisting of a single bond, alkylene, alkenylene, alkynylene, arylene or a heterocyclylene moiety; R
5
and R
6
are same or different and are independently selected from hydrogen, alkyl, aryl or heterocyclyl; or R
5
and R
6
may form together with the nitrogen atom to which they are attached a heterocyclyl ring system.
本发明涉及式I的化合物或其盐,其中,R1选自氢和R4组成的群;R2选自氢、乙酰基和R4组成的群;R3选自烷基、—O-烷基、—NH-烷基、芳基和杂环基组成的群;R4代表一个基团(A),其中,X选自单键、烷基、烯基、炔基、芳基或杂环基基团;R5和R6相同或不同且独立地选自氢、烷基、芳基或杂环基;或R5和R6可以与它们连接的氮原子一起形成一个杂环基环系统。