Bioinspired Total Synthesis of Agelastatin A

被引:58
作者
Reyes, Jeremy Chris P. [1 ]
Romo, Daniel [1 ]
机构
[1] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA
关键词
alkaloids; biomimetic synthesis; N-acyliminium; Nazarov cyclization; pyrrole-2-amino imidazole alkaloids; PYRROLE-IMIDAZOLE ALKALOIDS; MARINE NATURAL-PRODUCTS; CORAL SEA; SIGMATROPIC REARRANGEMENT; ABSOLUTE-CONFIGURATION; ALKYNYLIODONIUM SALTS; ORGANIC-SYNTHESIS; (-)-AGELASTATIN; DENDROMORPHA; ACID;
D O I
10.1002/anie.201200959
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A one-two punch: Two potentially biosynthetically relevant cyclizations of a keramadine analogue give agelastatin A (see scheme). A diastereoselective C-ring formation, which proceeds through a 5-exo-trig cyclization or a Nazarov cyclization of a red-colored N-acyliminium intermediate, generates the three contiguous stereocenters of the cyclopentane core. A silica gel assisted cyclization of a nagelamide J analogue gives agelastatin A. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码:6870 / 6873
页数:4
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