5-substituted-1,2-dihydro-3H-pyrrolo(1,2-a)pyrrole-1-carbonitriles and process for their conversion to the corresponding 1-carboxylic acids
申请人:SYNTEX (U.S.A.) INC.
公开号:EP0000649A1
公开(公告)日:1979-02-07
Compounds of the formula:
wherein Y is
in which R is hydrogen, methyl, chloro or bromo, the R substitution being at the 3, or 5 positions of the thiophene ring,
R1 is hydrogen, a lower alkyl group having 1 to 4 carbon atoms, a lower alkoxy group having from 1 to 4 carbon atoms, chloro, fluoro or bromo, the R1 substitution being at the ortho, meta or para positions of the aroyl group, and
R2 is hydrogen or a lower alkyl group having from 1 to 4 carbon atoms.
These compounds are used as intermediates for the preparation of the corresponding 1-carboxylic acid compounds by hydrolysis, the latter compounds being pharmaceutically useful.
式中的化合物:
其中 Y 是
其中 R 为氢、甲基、氯或溴,R 取代位于噻吩环的 3 或 5 位、
R1 是氢、1 至 4 个碳原子的低级烷基、1 至 4 个碳原子的低级烷氧基、氯、氟或溴,R1 的取代位在芳基的正位、偏位或对位上,以及
R2 是氢或具有 1 至 4 个碳原子的低级烷基。
这些化合物可用作中间体,通过水解制备相应的 1-羧酸化合物,后一种化合物具有药用价值。