[Two new C21 steroidal glycosides from Marsdenia tenacissima].
OBJECTIVE
To study the chemical constituents of Marsdenia tenacissima (Roxb.) Wight et Arn.


METHODS
To separate compounds with various chromatography technology and to elucidate their structures by chemical and spectral analysis.


RESULTS
Two compounds were isolated from Marsdenia tenacissima and their stuctures were determined as tenacissosides J (I) and tenacissosides K (II).


CONCLUSIONS
Compounds I and II are new C21 steroidal glycosides.
Xing
Wang-xing
WX
Department of Pharmaceutical Preparations, the 117th Hospital of PLA , Hangzhou 310013, China. xxy9903@hotmail.com
Cheng
Bin
B
Mi
He-ming
HM
Yang
Gen-jin
GJ
Wu
Yu-tian
YT
D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D031101:Marsdenia / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*
D006027:Glycosides; D013256:Steroids; C489723:tenacissoside J; C489724:tenacissoside K