Enantioselective synthesis of a key "A-ring" intermediate for the preparation of 1alpha-fluoro vitamin D3 analogues |
| |
Authors: | Giuffredi Guy Bobbio Carla Gouverneur Véronique |
| |
Institution: | University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K. |
| |
Abstract: | 1Alpha-fluoro A-ring dienol 2, a useful building block for the preparation of fluorinated vitamin D3 analogues, was synthesized in eight steps from 4-{tert-butyldimethylsilyl]oxy}cyclohexanone. The most distinctive synthetic development to emerge from this new synthesis is an unprecedented substrate-controlled diastereoselective fluorodesilylation of an advanced dienylsilane intermediate. This is the first enantioselective route to compound 2 relying on the use of an electrophilic fluorinating reagent. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|