Further Studies on the Synthesis of 24(<i>S</i>),25-Epoxycholesterol. A New, Efficient Preparation of Desmosterol
作者:Thomas A. Spencer、Dansu Li、Jonathon S. Russel、Nicholas C. O. Tomkinson、Timothy M. Willson
DOI:10.1021/jo991370c
日期:2000.4.1
and 28 (97% yield). A more efficient synthesis of 1 was achieved via coupling of cuprate 21 with allylic acetate 31 to give 73% of 16, in the most efficient conversion yet of a C22 intermediate to desmosterol (5) or its acetate 6.