Isolation and structure determination of cypritibetquinone A and B, two new phenanthraquinones from Cypripedium tibeticum.
- Author:
Dong LIU
1
;
Jian-hua JU
;
Zhong-jie ZOU
;
Geng LIN
;
Jun-shan YANG
Author Information
- Publication Type:Journal Article
- MeSH: Anthraquinones; chemistry; isolation & purification; Molecular Conformation; Molecular Structure; Orchidaceae; chemistry; Phenanthrenes; chemistry; isolation & purification; Plants, Medicinal; chemistry; Rhizome; chemistry
- From: Acta Pharmaceutica Sinica 2005;40(3):255-257
- CountryChina
- Language:English
-
Abstract:
AIMTo study the chemical constituents of Cypripedium tibeticum.
METHODSCompounds were isolated by repeated silica gel chromatography and purified on Sephadex LH-20 and structures were determined by spectral analysis.
RESULTSCypritibetquinones A and B were isolated from the ethyl acetate residue and their structures were determined as 7-hydroxy-2-methoxy-1 4-phenanthraquinone (1) and 7-hydroxy-2, 10-dimethoxy-l1 4-phenanthraquinone (2), respectively, by extensive spectral analyses.
CONCLUSIONCypritibetquinones A and B are two new phenanthraquinones.
