Preparation, reactivity, and spectral properties of 1,3-dioxin vinylogous esters: versatile .beta.-ketovinyl cation equivalents
作者:Amos B. Smith、Bruce D. Dorsey、Masashi Ohba、Andrew T. Lupo、Michael S. Malamas
DOI:10.1021/jo00253a024
日期:1988.9
Synthesis and endothelin receptor binding activity of synthetic analogues of RES-1149-2
作者:George A Kraus、Xuemei Wang
DOI:10.1016/s0960-894x(00)00136-0
日期:2000.5
A direct synthesis of analogues 6 and 7 is described. The key transformations are the addition of dibromomethyl lithium to a ketone and the subsequent mild hydrolysis to a hemiacetal.