An arylbenzofuran and four isoflavonoids from the roots of Erythrina poeppigiana
摘要:
An arylbenzofuran. erypoegin F and four isoflavonoids, erypoegins G-J, together with six known compounds were isolated from the roots of Erythrina poeppigiana, and their structures were elucidated on the basis of spectroscopic evidence. Erypoegin F is a rare 2-arylbenzofuran possessing a formyl group from a natural source, and erypoegin I is the first naturally Occurring isoflavonoid with a 2-oxo-3-methylbutyl group. (C) 2003 Elsevier Science Ltd. All rights reserved.