Trianthenol: an antifungal tetraterpenoid from Trianthema portulacastrum (Aizoaceae)

An antifungal tetraterpenoid named trianthenol 1 has been isolated from the chloroform extract of Trianthema portulacastrum. Its structure was establi shed as 15-hydroxymethyl-2,6,10,18,22,26,30-heptamethyl-14-methylene-17-hen triacontene on the basis of spectroscopic data including high resolution ma ss and two-dimensional NMR techniques. A benzaldehyde derivative 2, a penta cyclic triterpenoid 3 and benzoic acid derivatives 4-5 are also reported fo r the first time from Trianthema portulacastrum. (C) 2001 Elsevier Science Ltd. All rights reserved.