Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The stereoselective synthesis of (±)-de-AB-cholesta-8(14),22-dien-9-one from(±)-erythro-6-benzyloxy -5-hydroxy-8-methyl-l-tetrahydropyranyloxy-3(Z)-nonene by two Claisen rearrangements as a precursor of vitamin D 3 is presented. ... J. Org. Chem., 48 (1983), p. 1404 and other ...