𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Stereoselective intramolecular cyclopropanations: Enantioselective syntheses of 1α,25-dihydroxyvitamin D3 A-ring precursors

✍ Scribed by William G. Dauben; Robert T. Hendricks; Bipin Pandy; Shung C. Wu; Xiaoming Zhang; Michael J. Luzzio


Book ID
103404916
Publisher
Elsevier Science
Year
1995
Tongue
French
Weight
189 KB
Volume
36
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


An efficient enantioselective synthesis
✍ Masakazu Koiwa; Georges P.J Hareau; Fumie Sato 📂 Article 📅 2000 🏛 Elsevier Science 🌐 French ⚖ 99 KB

The asymmetric synthesis of the A-ring of 1α,25-dihydroxyvitamin D 3 , (Z)-2, from 5-tert-butyldimethylsiloxy-2-cyclohexenone [(S)-1], is described where an intramolecular lactonization using cat. scandium triflate is the key reaction.