发明授权
US5401753A Substituted n-heteroaryl-1, 2-diaminocyclobutene-3, 3-diones 失效
取代的正 - 杂芳基-1,2-二氨基环丁烯-3,3-二酮

Substituted n-heteroaryl-1, 2-diaminocyclobutene-3, 3-diones
摘要:
The compounds of the formula: ##STR1## wherein: R.sub.1 and R.sub.2 are, independently, hydrogen, straight or branched chain alkyl or mono- or bi-cyclic alkyl;A is quinoline group which may be substituted by alkyl, perfluoroalkyl, alkoxy, perfluoroalkoxy, amino, alkylamino, dialkylamino, alkylsulfonamido, alkylcarboxamido, nitro, cyano or carboxyl;or a pharmaceutically acceptable salt thereof, are smooth muscle relaxants.
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