【tilte】Corticosteroid 17α-monoesters from 17α,21-cyclic orthoesters
【author】R. Gardi, R. Vitali and A. Ercoli
【journal】Tetrahedron Letters Volume 2, Issue 13, 1961, Pages 448-451
【link】
http://www.sciencedirect.com/science/article/pii/S0040403900717497