申请人:Dainippon Pharmaceutical Co., Ltd.
公开号:US04356186A1
公开(公告)日:1982-10-26
Novel acetic acid derivatives of the formula: ##STR1## wherein X is oxygen or sulfur; R.sub.1 is hydrogen or a lower alkyl; R.sub.2 is hydroxy, an alkoxy, an alkenyloxy, a cycloalkyloxy, an aryloxy, a substituted aryloxy, an aryl-lower alkoxy, a substituted aryl-lower alkoxy, an aryl-lower alkenyloxy, a substituted aryl-lower alkenyloxy, an .omega.-disubstituted amino-lower alkoxy, a lower alkoxycrbonyl-lower alkoxy, a lower alkoxy-lower alkoxy, a hydroxy-lower alkoxy-lower alkoxy, an acyl-lower alkoxy, or a group ##STR2## wherein R.sub.3 is hydrogen, hydroxy, a lower alkyl, an aryl-lower alkyl, a hydroxy-lower alkyl, or a carboxy-lower alkyl, R.sub.4 is hydrogen, a lower alkyl or a hydroxy-lower alkyl, or the R.sub.3 and R.sub.4 may combine together with the nitrogen atom to which they are joined to form a heterocyclic group; and the group --CH(R.sub.1)COR.sub.2 is joined to the carbon atom at 2- or 3-position, and pharmaceutically acceptable salts thereof, processes for their preparation, and pharmaceutical compositions containing these compounds. They have excellent anti-inflammatory, analgesic and antipyretic activities with weak ulcerogenicity in the gastrointestinal tract and toxicity.
新颖的乙酸衍生物的化学式为:##STR1## 其中X为氧或硫;R.sub.1为氢或较低的烷基;R.sub.2为羟基、烷氧基、烯丙氧基、环烷氧基、芳基氧基、取代芳基氧基、芳基-较低烷氧基、取代芳基-较低烷氧基、芳基-较低烯丙氧基、取代芳基-较低烯丙氧基、ω-二取代氨基-较低烷氧基、较低烷氧基羰基-较低烷氧基、较低烷氧基-较低烷氧基、羟基-较低烷氧基-较低烷氧基、酰基-较低烷氧基,或一个基团##STR2## 其中R.sub.3为氢、羟基、较低烷基、芳基-较低烷基、羟基-较低烷基,或羧基-较低烷基,R.sub.4为氢、较低烷基或羟基-较低烷基,或R.sub.3和R.sub.4可以结合到一起与它们连接的氮原子形成一个杂环基团;以及基团--CH(R.sub.1)COR.sub.2连接到2-或3-位置的碳原子上,以及其药用盐,其制备方法,以及含有这些化合物的制药组合物。它们在胃肠道中具有出色的抗炎、镇痛和退热活性,且具有较弱的溃疡原性和毒性。