Abstract
With the aim of discovering a lead compound for pyridine‐based fungicide bearing adamantane moiety, a series of novel O‐alkyl/benzyl‐1‐(adamantan‐1‐yl)‐2‐(pyridin‐3‐yl)ethan‐1‐one oximes were synthesized from 3‐methylpyridine, ethyl (adamantan‐1‐yl)carboxylate, and alkoxyamine or benzoxyamine hydrochloride. The in vitro antifungal activity against four pathogenic fungi was evaluated, and some compounds exhibited good antifungal activity. Compounds 3d and 3f demonstrated strong activity against Sclerotinia sclerotiorum, with EC50 values of 11.25 and 12.87 μg/mL, respectively; 3b, 3c, and 3k had notable activity against Botrytis cinerea, with EC50 values of 12.78, 12.57, and 11.97 μg/mL, respectively. For Rhizoctonia Solani, 3d and 3g showed sufficient activity with EC50 values of 9.66 and 8.90 μg/mL, respectively. In addition, 3d and 3g demonstrated moderate activity against Colletotrichum orbiculare, with EC50 values of 14.32 and 15.83 μg/mL, respectively.
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