New 5-(pyrrol-2-oyl)-1,2-dihydro-3H-pyrrolo(1,2-a)pyrrole derivatives as anti-inflammatory and analgesic agents
申请人:Merck & Co., Inc.
公开号:EP0096816A2
公开(公告)日:1983-12-28
Substituted 5-(pyrrol-2-oyl)-1,2-dihydro-pyrrolo [1,2-a]-pyrrole derivatives are disclosed having the structural formula:
or a pharmaceutically acceptable salt, ester or amide thereof wherein
R is, e.g., hydrogen or loweralkyl;
R' is hydrogen, loweralkyl or lower haloalkyl;
R2Z can be at any available positions and R2 is R;
n is 1 to 3;
R3 is, e.g., hydroxy or loweralkoxy;
Y is, e.g., oxygen, sulfur or H with the proviso that when Y is H, R is not present;
Z is, e.g.,-0-,-S-or halo providing that when Z is halo, R is not present. These compounds have been prepared via decarboxylation of the corresponding 1,7-dicarboxylate prepared from condensation of a dialkyl 1,2-dihydro-3H-pyrrolo[1,2-a]-pyrrole-1-7-dicarboxylate 7 carboxylic acid with an appropriately substituted 2-pyrroyl chloride, or conversely, an acid chloride of the former bicyclic compound with a substituted pyrrole. The compounds are analgesic and antiinflammatory agents of high activities but low ulcerogenic side effects.
公开了结构式如下的取代的 5-(吡咯-2-酰基)-1,2-二氢-吡咯并[1,2-a]-吡咯衍生物:
或其药学上可接受的盐、酯或酰胺 其中
R 是氢或低级烷基;
R' 是氢、低级烷基或低级卤代烷基;
R2Z 可以位于任何可用位置,R2 是 R;
n 为 1 至 3;
R3 是羟基或低级烷氧基;
Y 是,例如,氧、硫或 H,但当 Y 是 H 时,R 不存在;
Z 是,例如-0-、-S-或卤素,但当 Z 为卤素时,R 不存在。这些化合物是由 1,2-二氢-3H-吡咯并[1,2-a]-吡咯-1-7-二甲酸二烷基 7 羧酸与适当取代的 2-吡咯酰氯缩合制备的相应 1,7-二羧酸盐脱羧制备而成,或者相反,由前一种双环化合物的酰氯与取代的吡咯缩合制备而成。这些化合物是镇痛和抗炎药物,活性高,但致溃副作用小。