2-Substituted alkoxy-3-substituted-pyrazines.

摘要

A compound which is a pyrazine derivative of formula <CHEM> wherein: Q is -CO- or -CH2-, R is hydroxyl, C1-C4 alkoxy, a halogen, -NH-C1-C4 alkylene-OH, -NH-C1-C4 alkylene-arylthio,-NH-C1-C4 alkylene-halogen, <EMI ID=118.2 HE=25 WI=80 TI=CF> in which <CHEM> is di-C1-C4-alkylamino, cycloalkylamino, morpholino, <CHEM> or <CHEM> in which R9 is hydrogen, C1-C4 alkyl or aryl, R10 is hydrogen, C1-C4 alkyl, hydroxy-C1-C4 alkyl, hydroxy-C1-C4 alkoxy-C1-C4 alkyl or di(aryl)-C1-C4 alkyl, m is an integer of 4 to 6, n is 2 or 3, R1 is alkyl or aryl-C1-C4 alkyl, R2 and R3 are independently each C1-C4 alkyl, or together form a tetramethylene bridge, and R4 is hydrogen, C1-C4 alkyl or phenyl, which phenyl is optionally substituted by 1 to 3 halogens, a nitro, a C1-C4 alkyl or a C1-C4 alkoxy group, or a pharmaceutically acceptable salt thereof, is useful in the treatment of circulatory or metabolic disorders.