874485-32-2Relevant articles and documents
Steroidal glycosides from the underground parts of Dracaena thalioides and their cytotoxic activity
Tang, Liying,Wang, Zhuju,Wu, Hongwei,Yokosuka, Akihito,Mimaki, Yoshihiro
, p. 102 - 110 (2015/02/19)
Six spirostanol glycosides (1-6) and 12 known compounds (7-18) were isolated from the underground parts of Dracaena thalioides (Agavaceae). Their structures were determined by spectroscopic analysis, including 2D NMR spectroscopic data, and chemical transformations. The isolated compounds were evaluated for cytotoxic activity against HL-60 human leukemia cells. Compounds 1, 3-6, and 8-18 showed cytotoxicity against HL-60 cells, of which 10, a bisdesmosidic spirostanol derivative, showed potent cytotoxicity against HL-60 cells with an IC50 value of 0.38 μM and induced apoptosis in HL-60 cells.
New neuritogenic steroidal saponin from Ophiopogon japonicus (Thunb.) Ker-Gawl
Qu, Yuan,Zhang, Yang,Pei, Liang,Wang, Yan,Gao, Lijuan,Huang, Qianming,Ojika, Makoto,Sakagami, Youji,Qi, Jianhua
experimental part, p. 1201 - 1204 (2012/02/02)
A new steroidal saponin was isolated from Ophiopogon japonicus. This saponin possesses a modification by 2-hydroxy-3-methylvalerylation of the hydroxyl group at C-4' of the sugar, linked to C-1 of the aglycone. It exhibited significant neuritogenic activity for PC12 cells. The structure-activity relationship revealed the aglycone, rather than the sugar moieties and acylation, to be important for the neuritogenic activity.
Highly efficient and regio-selective glucosylation of 25(S) ruscogenin by Gliocladium deliquescens NRRL1086
Chen, Naidong,Zhang, Jian,Liu, Jihua,Yu, Boyang
body text, p. 439 - 442 (2010/10/20)
A new steroidal glycoside, 25(S) ruscogenin 1-O-β-D-glucopyranoside (2) was obtained through the microbial transformation of 25(S) ruscogenin (1) by G. deliquescens NRRL1086 in 54% isolated yield. The structure of the product was elucidated by IR, MS and NMR spectra. This is the first report on the preparation of steroidal saponins by microbial transformation.