Organolithium-Mediated Diversification of Peptide Thiazoles
作者:Shaojiang Deng、Jack Taunton
DOI:10.1021/ol047660j
日期:2005.1.1
[Reaction: see text] We report a one-step, racemization-free method for the diversification of peptidethiazoles via direct lithiation of the thiazole ring. The method is compatible with N-Boc, N-trityl, carboxylic ester, and carboxamide protecting groups and has been used to directly functionalize the thiazole ring of cyclopeptide natural products.
Synthesis of aeruginosamide, a metabolite of the cyanobacterium Microcystis aeruginosa, required overcoming difficulties encountered in a convergent route and an interesting change in conformation of the product governed by the conditions for the final step.