A new stilbene, malaysianol E (1), together with five known stilbenes namely gnetol (2), gnetucleistol C (3), gnetucleistol D (4), resveratrol (5) and ε-viniferin (6) were successfully discovered from the acetone extract of the lianas of Gnetum microcapum. The structures of these stilbenes were determined on the basis of spectroscopic (1D and 2D NMR) and MS evidence. This paper describes the structural elucidation of the new compound, malaysianol E. The chemotaxonomic significance of this compound is briefly discussed.
IliyaI., TanakaT., IinumaM., AliZ., FurusawaM., NakayaK., ShiratakiY., MurataJ., DarnaediD. (2002) Stilbene derivatives from two species of Gnetaceae. Chemical and Pharmaceutical Bulletin, 50, 796–801.
2.
Medicinal Herb Index in Indonesia (1995) PT. EISAI Indonesia, 5.
3.
ShimizuK., KondoR., SakaiK. (2000) Inhibition of tyrosinase by flavonoids, stilbenes and related 4-substituted resorcin. Planta Medica, 66, 11–15.
4.
ZamanA., PrakashS., WizaratK., JoshiB.S., GawadD.H., LikhateK. (1983) Isolation and structure of gnetol, a novel stilbene from Gnetum ula. Indian Journal of Chemistry, 23B, 101–104.
5.
YaoC.S., LinM., LiuX., WangY.H. (2005) Stilbene derivatives from Gnetum cleistostachyum. Journal of Asian Natural Products Research, 7, 131–137.
