Bridged ring a steroids: total synthesis of (±)-14β-hydroxy-1β,4β-methano-5β,8α,9β-androstane-7,17-dione
作者:Stephen P. Douglas、Jeffery F. Sawyer、Peter Yates
DOI:10.1016/s0040-4039(00)98270-4
日期:1985.1
A modification of the Torgov steroidsynthesis in which a vinyl methyl ether group in ring B stabilizes the critical cationic intermediate has been used to synthesize the title compound (15), whose structure has been confirmed by X-ray crystallographic analysis.
Design of ‘push-pull’ Cookson's cage ketones and their quantitative [2+2] cycloreversion to , , -triquinanes at room temp, under Lewis acid catalysis, is reported. This observation has promising ramifications on the utility of 1 2 system for reversible storage of solar energy.
A useful synthon approach to bicyclic enols: acid-catalyzed and base-catalyzed rearrangements of Diels-Alder adducts of 2-methoxy-5-methyl-1,4-benzoquinone