Two New Megastigmane Glycosides and a New Iridoid Glycoside from Gelsemium elegans

✍ Scribed by Qiu-Ping Zhang; Bin-Feng Zhang; Gui-Xin Chou; Zheng-Tao Wang

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: German
• Weight: 188 KB
• Volume: 94
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.201000399

✦ Synopsis

Two new megastigmane glycosides, eleganosides A and B (1 and 3, resp.), and one new iridoid glycoside, gouwenoside A (4), together with two known compounds, foliasalacioside B 1 (2) and loganin (5), were isolated from the aerial parts of Gelsemium elegans (Gardn. et Champ.) Benth. (Loganiaceae). Their structures were elucidated by spectroscopic methods including 1D-and 2D-NMR techniques. The absolute configuration of 1 was determined by CD spectroscopy.