1-R-4-(omega-substituted alkyl)-3,3-diphenyl-2-pyrrolidinones of the formula ##STR1## wherein R is hydrogen, lower alkyl, cyclohexyl or benzyl, R.sup.1 is hydrogen, chloro, bromo, fluoro, trifluoromethyl or lower alkoxy, R.sup.2 is hydrogen, chloro, bromo, or fluoro, A is hydroxy, lower-alkylcarbonyloxy or lower-alkoxycarbonyl and n is 1, 2 or 3 having analgetic and antidiarrheal activity are disclosed. The pharmaceutically acceptable acid addition salts of the bases are within the scope of the present invention.
公开了式子为##STR1##的1-R-4-(ω-取代烷基)-3,3
-二苯基-2-吡咯烷酮,其中R为氢、低级烷基、环己基或苄基,R.sup.1为氢、
氯、
溴、
氟、三
氟甲基或低级烷氧基,R.sup.2为氢、
氯、
溴或
氟,A为羟基、低级烷基
羧酸酯氧基或低级烷氧基
羧酸酯,n为1、2或3,具有镇痛和抗腹泻活性。本发明范围内包括药学上可接受的酸加盐。