Patent ID: 7691825
Filing Date: 2010-04-06
Classification: C07H

Abstract:
1. A compound of the formula wherein R n is zero or 1; R R R R  in which or a pharmaceutically acceptable salt thereof; and wherein optionally substituted aryl refers to an unsaturated aromatic carbocyclic group of from 6 to 14 carbon atoms having a single ring or multiple condensed rings which may be optionally substituted with from 1 to 3 substituents selected from the group consisting of hydroxy, acyl, alkyl, alkoxy, alkylthio, alkenyl, alkynyl, amino, acyloxy, acylamino, aryl, aralkyl, aryloxy, azido, carboxy, cyano, halo, nitro, heteroaryl, heteroaryloxy, trihalomethoxy, dihalomethyl, trihalomethyl and perhaloalkyl; and optionally substituted heteroaryl refers to an unsaturated aromatic heterocyclic group having a single ring or multiple condensed rings, from 1 to 15 carbon atoms and from 1 to 4 hetero atoms selected from the group consisting of nitrogen, sulfur and oxygen within the ring, and which may be optionally substituted with from 1 to 3 substituents selected from the group consisting of hydroxy, acyl, alkyl, alkoxy, alkylthio alkenyl, alkynyl, amino, acyloxy, acylamino, aralkyl, aryloxy, azido, carboxy, cyano, halo, nitro, heteroaryl, heteroaryloxy, trihalomethoxy, dihalomethyl, perhaloalkyl and trihalomethyl.