Considerable interest has been gained by withasteroids because of their structural uniqueness and wide spectrum of biological activities. However, limited systematic studies for proving their cytotoxic potential have so far been reported. Hence, an attempt was made to test the cytotoxicity of six
Chemical investigation of a methanol extract of the flowers of Datura metel has led to the isolation of 10 new withanolides, withametelins I-P (1-8), 1,10-seco-withametelin B (9), and 12beta-hydroxy-1,10-seco-withametelin B (10), together with seven known withanolides. The structures of 1-10 were
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