Synthesis of Enantiomerically Pure Substituted Cyclopentenes from (−)-Quinic Acid
作者:Jean-Claude Barrière、Jeanine Cléophax、Stephan D. Géro、Marc Vuilhorgne
DOI:10.1002/hlca.19830660127
日期:1983.2.2
The synthesis of a large variety of enantiomerically pure substituted reactive cyclopentenes 16, 23, 24 and 28 have been synthesized from the readily available (−)-quinic acid 1. The straightforward strategy involves a high-yielding intramolecular aldolization-dehydration of acyclic 1,6-dialdehydes 13, 18, 19 and 27 obtained by oxidative cleavage of cyclohexanediols 5, 7, 11 and 12, using either lead
的大量的各种对映体纯取代的活性的环戊烯的合成16,23,24和28( - ) -已经从容易获得的合成奎尼酸1。的直接的策略涉及无环1,6-二醛的高产分子内醛醇缩合,脱水13,18,19和27通过环己二醇的氧化裂解得到的5,7,11和12,即使用四乙酸铅或三苯基碳酸酯。在氧化的手性中心处未观察到亚砜形成或中间体二醛的外消旋化。硫缩醛25转化为相应的酮还描述了使用苯硒酸酐的图26。