5alpha-steroidal glycosides from Parepigynum funingense.
Four new 5alpha-steroidal glycosides with an unusual framework, funingenosides A (1), B (2), C (3), and D (4), were isolated from the roots of Parepigynum funingense. Their structures were elucidated on the basis of 1D and 2D NMR techniques. The structure and relative stereochemistry of compound 1 were demonstrated by X-ray crystallographic analysis.
Hua
Yan
Y
State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan, People's Republic of China.
Liu
Hai-Yang
HY
Ni
Wei
W
Chen
Chang-Xiang
CX
Lu
Yang
Y
Wang
Cheng
C
Zheng
Qi-Tai
QT
D029062:Apocynaceae / Q000737:chemistry*; D002681:China; D018360:Crystallography, X-Ray; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D006868:Hydrolysis; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D013237:Stereoisomerism; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*
D006027:Glycosides; D013256:Steroids