Novel thiophene-acetic acid derivatives of the formulae ##STR1## wherein R is selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms, R.sub.1 is selected from the group consisting of lower alkyl of 1 to 4 carbon atoms and hydrogen and R.sub.2 is selected from the group consisting of hydrogen, lower alkyl of 1 to 7 carbon atoms and optionally substituted with at least one hydroxy group or an oxygen atoms-containing heterocycle,di-lower alkylamino-lower alkyl, N-heterocyclic alkyl, alkali metals, alkaline earth metals, aluminum and --H,NH (lower alkyl).sub.2 and Ar is selected from the group consisting of phenyl, optionally substituted with at least one member of the group consisting of halogen, trihalogenomethyl, lower alkyl, lower alkoxy and carboxyl, cyclohexyl, thienyl, furyl, tetrahydrofuryl and pyridyl, and in formula II, ArCO is attached to one of the positions .alpha. to the sulfur atom, which compounds have analgesic and anti-inflammatory activity and their preparations.
化合物的式子为##STR1##其中R选择自羟基和1到4个碳原子的烷基,R.sub.1选择自1到4个碳原子的低烷基和氢,R.sub.2选择自氢、1到7个碳原子的低烷基,且可选地被至少一个羟基或含氧杂环的取代,二次低烷基
氨基低烷基,N-杂环烷基,碱
金属,碱土
金属,铝和--H,NH(低烷基).sub.2,Ar选择自苯基,可选地被卤素、三卤甲基、低烷基、低烷氧基和羧基中的至少一种成员取代,环己基、
噻吩基、
呋喃基、
四氢呋喃基和
吡啶基,式子II中,ArCO附着在
硫原子的α位置之一,这些化合物具有镇痛和抗炎活性及其制备方法。