side-chain-hydroxylated D3derivatives was explored. We found that the 24R and 26R metabolites were more effectively hydroxylated at C1 by CYP27B1 compared to the corresponding S diastereomers. However, CYP27B1 showed almost no activity towards either of the diastereomers of the 23-hydroxylated derivative. This is the first report to show that CYP27B1 metabolizes 26-hydroxylated D3, converting 25,26D3
(25S)-1?, 25, 26-Trihydroxycholecalciferol, a New Vitamin D3 Metabolite: Synthesis and Absolute Stereochemistry at C(25)
作者:John J. Partridge、Shian-Jan Shiuey、Naresh K. Chadha、Enrico G. Baggiolini、Bernard M. Hennessy、Milan R. Uskokovi?、Joseph L. Napoli、Timothy A. Reinhardt、Ron L. Horst
DOI:10.1002/hlca.19810640718
日期:1981.11.4
The 1α, 25, 26-trihydroxy metabolite of vitaminD3, isolated from bovine serum, was shown to possess the (25 S)-configuration by HPLC. comparison of the 1, 3, 26-triacetate derivative with authentic (25 R)- and (25 S)-samples. The convergent synthesis of (25 R)-1α, 25, 26- and (25 S)-1α, 25, 26-trihydroxycholecalciferols (10a) and (10b) has been accomplished.