68422-03-7Relevant articles and documents
Synthesis and evaluation of in vitro anticancer activity of novel solasodine derivatives
Zha, Xiao Ming,Zhang, Fei Ran,Shan, Jia Qi,Zhang, Yi Hua,Liu, Jun O.,Sun, Hong Bin
scheme or table, p. 1087 - 1090 (2011/10/05)
Solasodine 11 is a steroidal alkaloid with various biological activities. Herein, 8 novel solasodine derivatives were synthesized and their effect on prostate cancer cell proliferation was assessed in vitro. Significant improvement in antiproliferative activity was achieved among some of the synthetic analogs. In particular, 19 exhibited the most potent inhibitory effect against the proliferation of PC-3 cell line (IC50=3.91μmol/L).
Partial Synthesis of the Steroid Alkaloids Teinemine, 22-Isoteinemine, Etioline, and 25-Isoetioline
Quyen, Le thi,Ripperger, Helmut,Schreiber, Klaus
, p. 143 - 149 (2007/10/02)
The rare 16α-hydroxylated steroid alkaloids teinemine , 22-isoteinemine , etioline , and 25-isoetioline are synthesized from the abundant spirosolane alkaloids tomatid-5-en-3β-ol and solasodine , respectively.The crucial stages of these syntheses are the conversion of 1 or 15 into the N-protected (22S,25S)-, (22R,25S)-, and (22S,25R) -22,26-epimino-3β-hydroxycholest-5-en-16-ones 6, 7, and 18 as well as their reductions with sodium/2-propanol to the 16α-hydroxy compounds teinemine (8), 22-isoteinemine (10), and (22S,25R)-22,26-epiminocholest-5-ene-3β,16α-diol (19), respectively.By treatment with sodium methanolate the N-chloro derivatives 9 and 11 of 8 and 10 afford etioline (12).In an analogous manner, the N-chloro derivative 20 of 19 is converted into 25-isoetioline (21).
Synthesis of the veratrum alkaloids verazin from tomatid-5-en-3-beta-ol
Adam,Schreiber,Tomko
, p. 203 - 208 (2007/10/11)
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