• S Sethuraman

      Articles written in Proceedings – Section A

    • Synthetic experiments in the benzopyrone series - Part XIX. Methyl ethers of genistein

      N Narasimhachari T R Seshadri S Sethuraman

      More Details Abstract Fulltext PDF

      It is shown that the most convenient method of preparing prunetin is by the partial demethylation of genistein trimethyl ether with hydrobromic or hydriodic acid under controlled conditions. The 5-methyl ether of genistein (isoprunetin) has now been synthesised by the methylation of 7:4′-O-dibenzyl genistein and subsequent debenzylation. Its properties are very different from those of prunetin and it yields a diethyl ether which could be independently prepared from genistein. The present work conclusively proves that prunusetin cannot be 5-O-methyl genistein (isoprunetin) and should be the same as prunetin.

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