Oleanane-Type Isomeric Triterpenoids from <i>Barringtonia racemosa</i>
作者:P. Mangala Gowri、S. V. S. Radhakrishnan、S. Jeelani Basha、A. V. S. Sarma、J. Madhusudana Rao
DOI:10.1021/np8007396
日期:2009.4.24
Two new isomeric acylated oleanane-type triterpenoids along with three known compounds were isolated from the MeOH extract of the dried fruits of Barringtonia racemosa. On the basis of spectroscopic methods, with special emphasis on 1D and 2D NMR techniques as well as chemical methods, the structures were characterized as racemosol A (1) [22α-acetoxy-3β,15α,16α,21β-tetrahydroxy-28-(2-methylbutyryl)olean-12-ene]