| 摘要 |
The present invention relates to the compounds of formula (I). <IMAGE> (l) wherein R1 is C1-8 alkyl, C2-8 alkenyl, C5-8 cycloalkyl, aryl-C1-4 alkyl, aryl or heteroaryl; or aryl or heteroaryl which is mono-, di-, or trisubstituted independently with halogen, nitro, C1-4 alkyl, C1-4 alkoxy, trifluoromethyl, amino or C1-4 alkyl mono or disubstituted amino, pharmaceutical formulations containing these compounds and their use as vasodilators in the treatment of cardiovascular disorders.
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