申请人:Noble Allison
公开号:US20090253929A1
公开(公告)日:2009-10-08
The present invention concerns a compound of formula (I): wherein R
1
is C
1-4
alkyl, or benzyl optionally substituted by halogen, C
1-4
alkyl (optionally substituted by halogen or C
1-4
alkoxy), C
1-4
alkoxy, C
1-4
alkoxycarbonyl, nitro or cyano; and a process for preparing a compound of formula (I).
本发明涉及式(I)的化合物:其中R1是C1-4烷基,或苄基,其可选择性地被卤素,C1-4烷基(可选择性地被卤素或C1-4烷氧基),C1-4烷氧基,C1-4烷氧羰基,硝基或氰基取代;以及制备式(I)化合物的方法。