Synthetic strategies based on epoxide-coupling reactions

Massachusetts Institute Of Technology, Cambridge MA

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Abstract

Project Summary The unifying theme this proposal is polyether synthesis via epoxide-opening cascades conducted in aqueous environments. The methods constitute a new strategy for the synthesis of polyethers of the ladder structural class (similar to brevetoxin and other Red Tide toxins) and emulate the epoxide cascade biogenesis proposed by Nakanishi more than two decades ago. The utility of these efficient epoxide-opening cascades is demonstrated in the syntheses of ladder polyether natural products and derivatives of biomedical relevance. The methods are developed with generality in mind and the syntheses are designed for flexibility. Thus, an important component of this proposal is the preparation of specific compounds suitable for testing. The diseases targeted include cystic fibrosis (brevenal and structural variants), and the necessary collaborations for these activities have already been established.