Homocyclotirucallane and two dihydrophenanthrenes from Spiranthes sinensis

Citation
Yl. Lin et al., Homocyclotirucallane and two dihydrophenanthrenes from Spiranthes sinensis, CHEM PHARM, 49(9), 2001, pp. 1098-1101
Citations number
16
Categorie Soggetti
Chemistry & Analysis
Journal title
CHEMICAL & PHARMACEUTICAL BULLETIN
ISSN journal
00092363 → ACNP
Volume
49
Issue
9
Year of publication
2001
Pages
1098 - 1101
Database
ISI
SICI code
0009-2363(200109)49:9<1098:HATDFS>2.0.ZU;2-Z
Abstract
A novel homocyclotirucallane. sinetirucallol (1), and two additional new di hydrophenanthrenes, sinensols G (2) and H (3), were isolated from the aeria l parts of Spiranthes sinensis (PERS.) AMES. Their structures were determin ed by various spectral analyses, including MS and two-dimentional nuclear m agnetic resonance techniques. The structure of compound I was further confi rmed by single-crystal X-ray analysis. The absolute configuration of I was determined by modified Mosher's method.