Abstract
Three new alkaloids, cassiarins C-E (1-3), and a new chromone, 10,11-dihydroanhydrobarakol (4), which showed moderate antiplasmodial activity against Plasmodium falciparum 3D7, were isolated from flowers of Cassia siamea, and the structures of 1-4 were elucidated by 2D NMR analysis and chemical transformation. Cassiarin D (2) was a dimeric compound consisting of 5-acetonyl-7-hydroxy-2-methylchromone and cassiarin C (1), and cassiarin E (3) was a dimer of cassiarins A and C (1).
Original language | English |
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Pages (from-to) | 1899-1901 |
Number of pages | 3 |
Journal | Journal of Natural Products |
Volume | 72 |
Issue number | 10 |
DOIs | |
Publication status | Published - 23 Oct 2009 |