Stereoselective Synthesis of the C1–C9 and C11–C25 Fragments of Amphidinolides C, C2, C3, and F
作者:Daniel C. Akwaboah、Dimao Wu、Craig J. Forsyth
DOI:10.1021/acs.orglett.7b00217
日期:2017.3.3
An efficient synthesis of the C1–C9 and the C11–C25 fragments of amphidinolides C, C2, C3, and F from a common intermediate is reported. The construction of the C1–C9 fragment involves an intramolecular hetero-Michael cyclization to form the 3,5-disubstituted trans-tetrahydrofuran moiety. The approach to prepare the C11–C25 fragment utilizes a highly stereoselective aerobic cobalt-catalyzed alkenol
据报道,可以从一个常见的中间体中高效合成两性霉素C,C2,C3和F的C1-C9和C11-C25片段。C1-C9片段的构建涉及分子内的异Michael环化反应,形成3,5-二取代的反式-四氢呋喃部分。制备C11–C25片段的方法是利用高度立体选择性的需氧钴催化的烯醇环化和螯合的Mukaiyama aldol反应形成C13–C14键并同时安装C13羟基。