Asymmetric Conjugate Addition for the Preparation of <i>s</i><i>yn</i>-1,3-Dimethyl Arrays: Synthesis and Structure Elucidation of Capensifuranone
作者:David R. Williams、Andrea L. Nold、Richard J. Mullins
DOI:10.1021/jo049567e
日期:2004.8.1
capensifuranone (1) has been achieved by the application of developments for asymmetric conjugate addition reactions of organocopper reagents with nonracemic N-enoyl-4-phenyl-1,3-oxazolidinones for the preparation of 1,3-syn-dimethyl arrays. The assignment of relative and absolute stereochemistry of 1 has been made following the high-field NMR characterizations of synthetic diol derivatives. The previously
己烯呋喃酮(1)的合成已通过应用有机铜试剂与非外消旋N-烯酰基-4-苯基-1,3-恶唑烷酮的不对称共轭加成反应的进展来制备1,3-顺二甲基阵列而实现。根据合成二醇衍生物的高场NMR表征,确定了1的相对和绝对立体化学。先前未分配的C 4立体化学1被确定为(S)-构型。己烯呋喃酮及其C 4非对映异构体的热力学平衡已得到检验。