Five Stilbene Glucosides from Gnetum gnemonoides and Gnetum africanum

2002/08/01 by Ibrahim Iliya, Toshiyuki Tanaka, Toŝhiyuki Tanaka +8 · 1 citation
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Phytochemistry and Biological Activities #Natural product bioactivities and synthesis #Biological Activity of Diterpenoids and Biflavonoids

paper · doi:10.1002/1522-2675(200208)85:8<2394::aid-hlca2394>3.0.co;2-6

Abstract

Five new stilbene glucosides, gnemonosides F, G, H, I, and J were isolated from the stem lianas of Gnetum gnemonoides Brongn and Gnetum africanum Welw along with nine known stilbenoids. The structures of the new compounds were elucidated as gnetin E 4a,4b,4c-O-β-triglucopyranoside (2), gnetin E 4a,4c-O-β-diglucopyranoside (3), gnetin C 4a,4b,11a-O-β-triglucopyranoside (4), gnetin D 4a,4b-O-β-diglucopyranoside (5), and gnetuhainin A 4a,4b-O-β-diglucopyranoside (6) on the basis of spectroscopic evidence.

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