2053-00-1Relevant articles and documents
A PREGNANE ESTER TETRAGLYCOSIDE FROM OXYSTELMA ESCULENTUM
Trivedi, Rashmi,Khare, Anakshi,Khare, Maheshwari P.
, p. 2297 - 2300 (1988)
Oxystelma esculentum; Aslepiadaceae; oxystine; steroid; pregnane ester tetraglycoside.A new pregnane ester tetraglycoside designated as oxystine has been isolated from the dried roots of Oxystelma esculentum.Chemical and spectroscopic evidence is consiste
Cytotoxicity of pregnane glycosides of Cynanchum otophyllum
Zhang, Mi,Li, Xiang,Xiang, Cheng,Qin, Yi,He, Jing,Li, Bao-Cai,Li, Peng
, p. 49 - 60 (2015/12/01)
Fourteen new pregnane glycosides, including nine caudatin glycosides (1-9), three qinyangshengenin glycosides (10-12), one kidjoranin glycosides (13) and one gagaminin glycosides (14), along with twelve known analogs (15-26) were isolated from roots of Cy
Identification of new qingyangshengenin and caudatin glycosides from the roots of Cynanchum otophyllum
Ma, Xiao-Xia,Wang, Dong,Zhang, Ying-Jun,Yang, Chong-Ren
body text, p. 1003 - 1009 (2011/09/15)
HPLC analysis of the roots of Cynanchum otophyllum Scheind (Asclepiadaceae) led to the isolation of six new pregnane glycosides, specifically otophyllosides N-P (2-4) and otophyllosides Q-S (7-9), in addition to the identification of three known C-21 steroidal glycosides, otophylloside A (1), otophylloside B (5) and caudatin 3-O-β-d-glucopyranosyl-(1→4)-β- d-oleandropyranosyl-(1→4)-β-d-cymaropyranosyl-(1→4) -β-d-cymaropyranoside (6). The structure of each glycoside was determined by detailed spectroscopic analysis and chemical methods. All compounds contain qingyangshengenin or caudatin aglycones and a straight sugar chain consisting of 4-7 hexosyl moieties with the mode of 1→4 linkage. The optically isomeric monosaccharides, d- and l-cymarose, coexisted in both otophyllosides R (8) and S (9).