Isolation and structure determination of cypritibetquinone A and B, two new phenanthraquinones from Cypripedium tibeticum / 药学学报
Acta Pharmaceutica Sinica
; (12): 255-257, 2005.
Article
in English
| WPRIM (Western Pacific)
| ID: wpr-353517
Responsible library:
WPRO
ABSTRACT
<p><b>AIM</b>To study the chemical constituents of Cypripedium tibeticum.</p><p><b>METHODS</b>Compounds were isolated by repeated silica gel chromatography and purified on Sephadex LH-20 and structures were determined by spectral analysis.</p><p><b>RESULTS</b>Cypritibetquinones 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.</p><p><b>CONCLUSION</b>Cypritibetquinones A and B are two new phenanthraquinones.</p>
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Phenanthrenes
/
Plants, Medicinal
/
Molecular Structure
/
Chemistry
/
Anthraquinones
/
Orchidaceae
/
Rhizome
/
Molecular Conformation
Language:
English
Journal:
Acta Pharmaceutica Sinica
Year:
2005
Document type:
Article