Prenylated flavonoids from Tephrosia apollinea

In continuation of our chemical investigation on some medicinal plants of the genus Tephrosia, re-investigation of the methylenechloride/methanol (1:1) extract of the air-dried aerial part of Tephrosia apollinea afforded a new prenylated flavonoid 1, in addition to an aromatic ester, a sesquiterpene, a lignan and several known prenylated flavonoids. The structures were established by (H-1: NMR, C-13 NMR, DEPT, H-1-H-1 COSY, HMQC, HMBC, NOESY and HRMS). Relative configurations of 9 and 10 were confirmed by X-ray analysis. (C) 2009 Abou El-Hamd H. Mohamed. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.