Compounds are disclosed according to the formula ##STR1## or an optical isomer thereof. The compounds of Formula I are cyclic AMP phosphodiesterase inhibitors useful as antithrombotic and inotropic agents and the like in mammals.
根据公式##STR1##或其光学异构体披露了化合物。公式I的化合物是环状
AMP磷酸二酯酶抑制剂,在哺乳动物中可用作抗血栓和肌力增强剂等。