Synthesis of deuterated isotopomers of 7α- and (25R,S)-26-hydroxycholesterol, internal standards for in vivo determination of the two biosynthetic pathways of bile acids
摘要:
Deuterated isotopomers of 7alpha- and (25R,S)-26-hydroxycholesterol, internal standards for in vivo determination of the two biosynthetic pathways of bile acids formation from cholesterol, were prepared from [2,2,3,4,4,6-H-2(6)]-cholesterol and (20S)-[7,7,21,21-H-2(4)]-3beta-(tert-butyldimethylsilyl)oxy-20-methylpregna-5-en-21-ol, respectively. (C) 2003 Elsevier Inc. All rights reserved.
Biosynthesis of polar steroids from the Far Eastern starfish Patiria (=Asterina) pectinifera. Cholesterol and cholesterol sulfate are converted into polyhydroxylated sterols and monoglycoside asterosaponin P1 in feeding experiments
作者:Natalia V. Ivanchina、Alla A. Kicha、Timofey V. Malyarenko、Anatoly I. Kalinovsky、Pavel S. Dmitrenok、Valentin A. Stonik
DOI:10.1016/j.steroids.2013.08.008
日期:2013.12
related low molecular weight glycosides in starfishes. These deuterium labeled precursors were converted into partly deuterated 5alpha-cholestane-3beta,6alpha,7alpha,8,15alpha,16beta,26-heptaol, 5alpha-cholestane-3beta,4beta,6alpha,7alpha,8,15beta,16beta,26-octaol, and steroid monoside asterosaponin P1 in result of feeding experiments on the Far Eastern starfish Patiria (=Asterina) pectinifera. The incorporations