Toward the Total Synthesis of the Brasilinolides: Stereocontrolled Assembly of a C1−C19 Polyol Segment
作者:Ian Paterson、Friedrich A. Mühlthau、Christopher J. Cordier、Michael P. Housden、Paul M. Burton、Olivier Loiseleur
DOI:10.1021/ol802562b
日期:2009.1.15
Two highly convergent syntheses of a fully protected C1−C19 polyol subunit of the brasilinolide family of immunosuppressive macrolides are described, exploiting boron-mediated 1,5-anti aldol couplings to form the C8−C9 and C13−C14 bonds.
Highly Stereoselective Diels–Alder-Based Strategy for the Synthesis of 3-epi-Formicin A and 1-epi-Formicin B
作者:Sunil L. Khamkar、Kishor L. Handore、Harish M. Shinde、D. Srinivasa Reddy
DOI:10.1021/acs.orglett.4c01209
日期:2024.5.10
The first enantioselective approach based on a highlystereoselective Diels–Alder reaction for the synthesis of 3-epi-formicin A and 1-epi-formicin B with rare N-acetylcysteamine-containing indenone thioesters is reported. The strategy utilizes a key Diels–Alder reaction to form the core hydrindane system with three contiguous stereocenters in very high levels of diastereo- and regioselectivity and
报道了第一个基于高度立体选择性 Diels-Alder 反应的对映选择性方法,用于与稀有的含N-乙酰半胱胺的茚酮硫酯合成 3-表观-福米星 A 和 1-表观-福米星 B。该策略利用关键的狄尔斯-阿尔德反应形成具有三个连续立体中心的核心茚满系统,具有非常高水平的非对映和区域选择性以及一锅氧化/异构化/脱氢。该方法的范围用不同的底物进行了测试,以高度非对映选择性的方式产生环加合物。