Lh. Pham et al., Two novel Amaryllidaceae alkaloids from Hippeastrum equestre Herb.: 3-O-demethyltazettine and egonine, PHYTOCHEM, 51(2), 1999, pp. 327-332
From the bulbs of vietnamese Hippeastrum equestre Herb. (Amaryllidaceae), t
wo novel Amaryllidaceae alkaloids 3-O-demethyltazettine and egonine have be
en isolated. Their structures were established by spectroscopic analysis (U
V, MS, NMR and CD) as well as by comparison with respective spectroscopic d
ata of tazettine and tazettadiol. (C) 1999 Elsevier Science Ltd. All rights
reserved.