申请人:SHIONOGI & CO., LTD.
公开号:EP0781764A1
公开(公告)日:1997-07-02
A process for producing a compound of the formula (I):
wherein R is hydrogen or an alkyl group, and R3 and R4 are hydrogen or an alkyl group, which comprises reacting a compound of the formula (II):
wherein R1 is an optionally substituted alkyl group or an optionally substituted phenyl group, with a compound of the formula (III):
HNR3R4 (III)
wherein each symbol is as defined above, and optionally alkylating the resulting compound. Intermediates for this process are also provided.
一种生产式(I)化合物的工艺:
其中 R 是氢或烷基,R3 和 R4 是氢或烷基,该工艺包括使式(II)化合物与式(III)化合物反应:
其中 R1 是任选取代的烷基或任选取代的苯基,与式 (III) 的化合物反应:
HNR3R4 (III)
其中各符号如上定义,并将所得化合物任选烷基化。还提供了该工艺的中间体。