A flexible total synthesis of the 2-nitropyrrole-derived marine natural product, (+)-heronapyrrole C, is reported. The approach is based on regioselective access to key building blocks containing the rare 4-substituted 2-nitropyrrole motif. Sharp less asymmetric epoxidation and dihydroxylation and a Shi epoxidation were used to introduce the five stereogenic centers of the bis-THF-diol side chain. The N-benzoyloxymethyl (Boz) protecting group was crucial for functionalization of the 2-nitropyrrole moiety and enabling final deprotection under mild conditions.
2-Nitropyrrole cross-coupling enables a second generation synthesis of the heronapyrrole antibiotic natural product family
作者:Xiao-Bo Ding、Daniel P. Furkert、Margaret A. Brimble
DOI:10.1039/c6cc07532k
日期:——
The heronapyrroles are a family of antibiotic naturalproducts containing the rare 2-nitropyrrole motif. We report here a second generation total synthesis that circumvents problems of selective pyrrole nitration and...
作者:Xiao-Bo Ding、Daniel P. Furkert、Robert J. Capon、Margaret A. Brimble
DOI:10.1021/ol403246j
日期:2014.1.17
A flexible total synthesis of the 2-nitropyrrole-derived marine natural product, (+)-heronapyrrole C, is reported. The approach is based on regioselective access to key building blocks containing the rare 4-substituted 2-nitropyrrole motif. Sharp less asymmetric epoxidation and dihydroxylation and a Shi epoxidation were used to introduce the five stereogenic centers of the bis-THF-diol side chain. The N-benzoyloxymethyl (Boz) protecting group was crucial for functionalization of the 2-nitropyrrole moiety and enabling final deprotection under mild conditions.