A 10-step synthesis of deliquinone is described. A key step in the synthesis is a persulfate-mediated radical addition to a quinone. (C) 2001 Elsevier Science Ltd. All rights reserved.
Divergent Enantioselective Synthesis of (Nor)illudalane Sesquiterpenes via Pd<sup>0</sup>-Catalyzed Asymmetric C(sp<sup>3</sup>)–H Activation
作者:Romain Melot、Marcus V. Craveiro、Thomas Bürgi、Olivier Baudoin
DOI:10.1021/acs.orglett.8b04086
日期:2019.2.1
divergent enantioselectivesynthesis of (nor)illudalane sesquiterpenes was designed by using a Pd0-catalyzed asymmetric C(sp3)–H arylation as a key step to control the isolated, highly symmetric quaternary stereocenter of the target molecules. A matched combination of chiral substrate and catalyst proved optimal to reach good levels of stereoselectivity. This approach enabled the synthesis of three
Total Synthesis of (Nor)illudalane Sesquiterpenes Based on a C(sp<sup>3</sup>)–H Activation Strategy
作者:Romain Melot、Marcus V. Craveiro、Olivier Baudoin
DOI:10.1021/acs.joc.9b01669
日期:2019.10.18
Three (nor)illudalane sesquiterpenes were synthesized from a common intermediate in racemic and enantioenriched forms using Pd0-catalyzed C(sp3)-H arylation as a key step. The configuration of the isolated, highly symmetric quaternary stereocenter of the target molecules was controlled through a matched combination of chiral substrate and catalyst. Moreover, the recently developed Ir-catalyzed C-H
使用Pd0催化的C(sp3)-H芳基化为关键步骤,从外消旋和对映体富集形式的一种常见中间体合成了三(正)伊拉达拉烷倍半萜。通过手性底物和催化剂的匹配组合来控制靶分子的分离的,高度对称的四元立体中心的构型。此外,采用最近开发的Ir催化的CH硼化/ Cu催化的甲基化方法将甲基安装在苯环上。这种策略允许高效合成外消旋和(S)构型的嘌呤奎尼酸,地喹醌和russujaponol F.
Synthesis of Puraquinonic Acid Ethyl Ester and Deliquinone via a Common Intermediate
作者:George A. Kraus、Prabir K. Choudhury
DOI:10.1021/jo020029g
日期:2002.8.1
Both compounds were prepared via a common intermediate. The key features included the direct synthesis of the indan skeleton and the radical addition to a quinone.