Patent ID: 7605164

Claim:
A method of potentiating cardiac myosin, which method comprises administering to a mammal in need thereof an amount of a compound represented by Formula I effective to potentiate cardiac myosin wherein: R 1 is alkyl, substituted alkyl, aryl, substituted aryl, heteroaryl or substituted heteroaryl; R 2 is acetyl, acetylamino, acetylene, alkoxycarbonyl, carboxamido, cyano, halo, heteroaryl, hydrogen, nitro or trifluoromethyl; and R 3 is aryl, substituted aryl, heteroaryl or substituted heteroaryl; or a single stereoisomer, or mixture of stereoisomers, or a pharmaceutically acceptable salt thereof, wherein “substituted” alkyl, aryl, and heteroaryl refer respectively to alkyl, aryl, and heteroaryl wherein one to three hydrogen atoms are replaced by a substituent independently selected from alkyl, fluoroalkyl, alkoxy, cyano, halogen, hydroxy, and nitro.