A compound shown by the general formula [1]:
1
(Wherein, R
1
and R
2
are each independently a hydrogen atom, a lower alkyl group or a cyano group, and
2
is an optionally substituted heterocyclic compound.); or a salt thereof
一种由通式[1]:1表示的化合物(其中,R1和R2各自独立地表示
氢原子、低
碳基或
氰基,2表示可选择取代的
杂环化合物);或其盐。