Substituted cinnamyl-2,3-dihydrobenzopyrans and cinnamylphenols useful as anti-inflammatory agents
申请人:Merck & Co., Inc.
公开号:EP0143952A1
公开(公告)日:1985-06-12
Substituted cinnamyl-2,3-dihydrobenzofuran and analogs of formulas
or a pharmaceutically acceptable salt thereof are disclosed wherein R is, e.g.,
(a) hydroxyloweralkyl;
(b) lower alkanoyl;
(c) CN;
(d) halo;
(e) mercaptoloweralkyl;
(f) loweralkylthio;
(g) lowerhaloalkyl or
(h) -COOR2 wherein R2 is H or C1-6alkyl; m is 1 to 4;
n is 2 or 3;
A is (a) phenyl substituted with (R')q wherein when there are more than one R' (q>1) R' can be the same or different from each other and is, e.g.,
(1) hydrogen;
(2) halo;
(3) loweralkoxy;
(4) lower alkylthio;
(5) loweralkyl;
(6) haloloweralkyl or
(7) -COOH; q is 0 to 5; or
(b) unsubstituted or substituted heteroaryl, e.g.,
(1) thienyl;
(2) benzothienyl;
(3) furyl;
(4) benzofuryl;
(5) pyrryl;
(6) indolyl or
(7) thiazolyl, the heteroaryl above being substituted with one or more of R'. Those compounds were prepared from the nucleophlic substitution of a cinnamylhalide with a 2,3-dihydrobenzofuran anion or an analog thereof. These compounds were found to be potent topical anti-inflammatory agents.
取代的肉桂基-2,3-二氢苯并呋喃及类似物的式
或其药学上可接受的盐,其中 R 是,例如
(a) 羟基低级烷基;
(b) 低级烷酰基
(c) CN
(d) 卤
(e) 硫醇低级烷基
(f) 低级硫代烷基
(g) 低级卤代烷基或
(h) -COOR2 其中 R2 是 H 或 C1-6 烷基; m 是 1 至 4;
n 为 2 或 3;
A 是 (a) 被 (R')q 取代的苯基,其中当有一个以上的 R' 时(q>1),R' 可以相同或不同,并且例如为
(1) 氢
(2) 卤
(3) 低级烷氧基
(4) 低级烷硫基
(5) 低级烷基
(6) 卤代低烷基或
(7) -COOH; q 为 0 至 5;或
(b) 未取代或取代的杂芳基,如
(1) 噻吩基
(2) 苯并噻吩基
(3) 呋喃基
(4) 苯并呋喃基
(5) 吡咯基
(6) 吲哚基
(7) 噻唑基,上述杂芳基被一个或多个 R'取代。这些化合物是由肉桂酰卤与 2,3-二氢苯并呋喃阴离子或其类似物发生核取代反应而制备的。发现这些化合物是强效的局部抗炎剂。