Synthesis and biological evaluations of A-ring isomers of 26,26,26,27,27,27-hexafluoro-1,25-dihydroxyvitamin D 3
摘要:
The activated vitamin D-3 derivative 26,27-F-6-1 alpha,25(OH)(2)D-3 (2a), its three A-ring diastereomers (2b, 2c, 2d), and 5,6-trans isomer (2e) were prepared. Two analogues (2b, 2c) of these isomers were synthesized by a palladium catalyzed coupling reaction using Vinyl bromide 5 and enynes (6a, 6b), which were derived from readily commercially available 2S-(+)-glycidyl p-toluenesulfonate 7, as a common starting material. Competitive vitamin D receptor (VDR) binding affinities of these diastereomers of 2a were evaluated. Interestingly, the stereochemical effects at C-1,3 of 2a were considerably more moderate than those of 1 alpha,25(OH)(2)D-3 (1). In particular, isomerization at the 5,6-double bond of 2a only slightly reduced VDR affinity, whereas 5,6-trans-1 alpha,25(OH)(2)D-3 had a significantly lower binding affinity than 1. (C) 2000 Elsevier Science Ltd. All rights reserved.
Process for the synthesis of vitamin d compounds and intermediates for the synthesis of the compounds
申请人:Kashiwagi Hirotaka
公开号:US20070135394A1
公开(公告)日:2007-06-14
An object of the present invention is to provide a process for synthesizing a vitamin D compound by simple procedures at lower costs. The present invention provides a process for preparing a vitamin D compound and an intermediate thereof, comprising the step of: (a) mixing a ketone or aldehyde, a Wittig reagent, and a base; or (b) mixing a ketone or aldehyde and a Wittig reagent, and then adding a base to the resulting mixture.
VDR-SILENT VITAMIN D DERIVATIVE AS INHIBITORS OF SREBP AND PHARMACEUTICAL USE THEREOF
申请人:Wakil Adil Salih
公开号:US20220081381A1
公开(公告)日:2022-03-17
Provided are vitamin D
3
derivatives of formula (I), pharmaceutical compositions thereof, and pharmaceutical or medical uses thereof for treating metabolic disease, a liver disease, obesity, diabetes, cardiovascular disease, or cancer in a patient in need thereof.