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Daiichi Pharmaceutical Co Ltd
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Daiichi Pharmaceutical Co Ltd
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Application filed by Daiichi Pharmaceutical Co LtdfiledCriticalDaiichi Pharmaceutical Co Ltd
Priority to JP3209076ApriorityCriticalpatent/JPS52116460A/en
Publication of JPS52116460ApublicationCriticalpatent/JPS52116460A/en
PURPOSE: Title compounds of formula I [A,B,D are each -C(R3) =, -S-,-N=,-N(R4) -; R1 is lower alkoxycarbonyl, lower alkylcarbonyl; R2 is lower alkyl; R3, R4 are H, lower alkyl, thiol]; for example, N-(1-methyl2-mercapto-5-imidazolyl) aminomethylene-malonic acid ethyl ester.