Control of stereoselectivity in samarium metal induced cyclopropanations. Synthesis of 1,25-Dihydroxycholecalciferol

DOI: 10.1016/S0040-4039(00)79919-9

Source and publish data:

Tetrahedron Letters p. 2343 - 2346 (1991)

Update date:2022-08-03

Topics:

Authors:

Kabat Kabat

Kiegiel Kiegiel

Cohen Cohen

Toth Toth

Wovkulich

Uskokovic

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1016/S0040-4039(00)79919-9

1,25-Dihydroxycholecalciferol (23) was synthesized from A-ring precursor 18 and Windaus-Grundmann ketone 19 via cyclovitamin D 21. Key reactions include highly stereoselective (5 to 6) and stereospecific (13 to 14) cyclopropanations.

Full text of DOI:10.1016/S0040-4039(00)79919-9

Products guided by the article

Product name:-(1,1-dimethylethyl)<(1-ethynyl-2-methylenebicyclo<3.1.0>hexan-3-yl)oxy>diphenylsilane

Cas No:135041-03-1

R&D Labs maybe for 135041-03-1

Tianjin Jiuri New Materials Co., Ltd.

Contact:+86-22-58889220

Address:C-5/6, Vison Hill, No.1 Gonghua Road, Huayuan Hi-tech Park, Tianjin, China.
Jiangsu Chiatai Qingjiang Pharmaceutical Co.,Ltd

Contact:+86-517-86283327

Address:9 North Hantai Road, Huaian, China
Radiant Pharma & Tech Company

Contact:+86-511-88790000

Address:338 North Yushan Rd, Zhenjiang, Jiangsu 212016
Suqian Ruixing Chemical Co., Ltd.

Contact:+86-527-80805666（总机）;84836008(销售)

Address:3 Jingsilu, Zone north, Hubin Xincheng Development Park, Suqian, China
Chemsky（shanghai）International Co.,Ltd.

Contact:0

Address:0

Relevant to this article

Enantioselective synthesis of -aminophosphonates via organocatalytic sulfenylation and [2,3]-sigmatropic sulfimide rearrangement

Doi:10.1055/s-0030-1260309
(2011)
Asymmetric phthalocyanine synthesi by ROMP-capture-release

Doi:10.1021/ol900352f
(2009)
Upper rim site lipophilic calix[4]arenes as receptors for natural terpenes and functionally related solvent molecules: Combined crystal structure and QMB sensor study

Doi:10.1039/c0ce00696c
(2011)
An efficient route for the synthesis of isochromenocarbazolones through palladium-catalyzed intramolecular ortho -arylation

Doi:10.1055/s-0030-1260162
(2011)
Supramolecular assemblies of dimolybdenum transoids built by Mo ₂-enhanced perfluorophenyl-perfluorophenyl synthons

Doi:10.1039/c1dt11490e
(2011)
Exogenous Photosensitizer-, Metal-, and Base-Free Visible-Light-Promoted C-H Thiolation via Reverse Hydrogen Atom Transfer

Doi:10.1021/acs.orglett.8b03679
(2019)

Article Doi