4-(2'-Pyridylamino)-phenylacetic acid derivatives, process for their preparation, pharmaceuticals containing these compounds and their use
申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:EP0011854A1
公开(公告)日:1980-06-11
The invention relates to novel 4-(2'-pyridylamino) -phenylacetic acid derivatives of the formula I
Wherein R1 is hydrogen, a halogen, a lower alkyl having 1 to 3 carbon atoms, or nitro, R2 is hydrogen, a halogen, or a lower alkyl having 1 to 3 carbon atoms, R3 is hydrogen, a halogen, or a lower alkyl having 1 to 3 carbon atoms, R4 is hydrogen or a lower alkyl having 1 to 3 carbon atoms, Rs is hydrogen or-CH2CH2OR6 wherein R6 is lower alkyl having 2 or 3 carbon atoms and being substituted with 1 or 2 hydroxy groups, provided that R1 or R2 is not 4-halogen,
or pharmaceutically acceptable salts thereof, a process fortheir preparation (e.g.2-[4-(2'-pyridylamino)pehnyl] propionic acid (compound A) is prepared by reacting methyl 2-(4-amino -phenyl)propionate with 2-chloropyridine, followed by hydrolysis), pharmaceutcial composition containing these compounds, and their use as anti-inflammatory and analgesic agents. They have excellent anti-inflammatory and analgesic activities with an extremely weak ulcerogenicity in the gastrointestinal tract. Some of the compounds have superior inhibitory activity against chronic inflammation mediated by cellular immunity.
In the figure the prophylactic effect on adjuvant-induced arthritis in rats is shown (vehicle control (line 1), reference compound Ibuprofen (line 2), new compound A (line 3)].
本发明涉及式 I 的新型 4-(2'-吡啶基氨基)-苯乙酸衍生物
其中 R1 是氢、卤素、具有 1 至 3 个碳原子的低级烷基或硝基;R2 是氢、卤素或具有 1 至 3 个碳原子的低级烷基;R3 是氢、卤素或具有 1 至 3 个碳原子的低级烷基;R4 是氢或具有 1 至 3 个碳原子的低级烷基;Rs 是氢或-CH2CH2OR6,其中 R6 是具有 2 或 3 个碳原子并被 1 或 2 个羟基取代的低级烷基,条件是 R1 或 R2 不是 4-卤素、
或它们的药学上可接受的盐、它们的制备方法(例如,2-[4-(2'-吡啶基氨基)苯基]丙酸(化合物 A)是通过 2-(4-氨基苯基)丙酸甲酯与 2-氯吡啶反应,然后水解制备的)、含有这些化合物的药物组合物,以及它们作为消炎和镇痛剂的用途。这些化合物具有出色的消炎和镇痛活性,在胃肠道中的致溃疡性极弱。其中一些化合物对细胞免疫介导的慢性炎症有很好的抑制作用。
图中显示了对佐剂诱导的大鼠关节炎的预防效果(车辆对照(第 1 行)、参考化合物布洛芬(第 2 行)、新化合物 A(第 3 行)]。