3 结果
Three unprecedented indole alkaloids, trigonoliimines A-C (1-3) with a unique polycyclic system, were isolated from the leaves of Trigonostemon lii Y. T. Chang. The structures of 1-3 were determined by the spectroscopic, computational, and CD exciton chirality approaches. Trigonoliimine A showed
A phytochemical investigation of the alkaloid constituents from Trigonostemon filipes Y. T. Chang et S. L. Mo led to the isolation of two new indole alkaloids, trigonostemine G (1) and trigonostemone J (2), together with two known ones, trigonostemine A (3) and trigonostemine B (4). Their structures
A new degraded sesquiterpene, tectoionol C (1), together with five known compounds wilsonol F (2), heterodendrin (3), epi-heterodendrin (4), 7-deoxogeayine (5), and 1H-indole-3-carboxylicacid, methyl ester (6), was isolated from the twigs of Trigonostemon lutescens. Their structures were determined