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  • Title: Synthesis and fungicidal activity of substituted pyrazolo[5,4-b] pyridine/pyrid-6-ones and pyrazolo[5,4-d]thiazines.
    Author: Nizamuddin MG, Manoj KS.
    Journal: Boll Chim Farm; 2001; 140(5):311-5. PubMed ID: 11680084.
    Abstract:
    6-amino-1-Aryloxyaceto-4-aryl-5-cyano-4,5-dihydro-3-methy-l-1H-pyrazolo [5,4-b] pyridines (3)/pyrid-6-ones (4) and 1-Aryloxyaceto-6-amino-4-aryl-3-methyl-4H-pyrazolo[5,4-d]-1,3-thiazines (5), have been prepared by Michael addition between a,b-unsaturated ketones (2) and malononitrile/ethyl cyanoacetate and thiourea respectively. The antifungal activity against Aspergillus niger, Helminthosporium oryzae and Pyricularia oryzae have been evaluated and compared with commercial fungicide Carbendazim tested under similar conditions.
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