Catalytic Asymmetric Synthesis of 3,4-Disubstituted Cyclohexadiene Carbaldehydes: Formal Total Synthesis of Cyclobakuchiols A and C
作者:Vidyasagar Maurya、Chandrakumar Appayee
DOI:10.1021/acs.orglett.8b01667
日期:2018.7.6
methodology is further extended to the asymmetric synthesis 3,4-disubstituted cyclohexane carbaldehydes and their derivatives. The practicality of this method is demonstrated by the gram-scale synthesis. This methodology is successfully applied for the formal total synthesis of cyclobakuchiol A, an antipyretic and anti-inflammatory agent, and cyclobakuchiol C.
描述了通过反电子需求Diels-Alder反应不对称合成3,4-二取代的环己二烯甲醛的第一种催化方法。在1-脯氨酸催化的温和反应条件下,测试了各种芳基乙醛和α,β,γ,δ-不饱和醛,得到了具有良好收率和高对映选择性的反式非对映体产物。该方法的范围进一步扩展到不对称合成3,4-二取代的环己烷甲醛及其衍生物。该方法的实用性由克级合成证明。该方法成功地用于退热和消炎剂环爆酚A和环爆酚C的正式全合成。