Total Synthesis of the Marine Alkaloid Discoipyrrole C via the MoOPH-Mediated Oxidation of a 2,3,5-Trisubstituted Pyrrole
作者:Qiao Yan、Xiang Ma、Martin G. Banwell、Jas S. Ward
DOI:10.1021/acs.jnatprod.7b00872
日期:2017.12.22
A totalsynthesis of the marine alkaloid discoipyrrole C (3) is described. In the pivotal step, the 2,3,5-trisubstituted pyrrole 19 was treated with MoOPH in the presence of MeOH, and the resulting methoxylated 1,2-dihydro-3H-pyrrol-3-one 20 subjected to reaction with potassium carbonate in MeOH then trifluoroacetic acid and H2O. This gave a mixture of target 3 and its dehydration product, and the
Total Syntheses of Discoipyrroles A, B, and C, Three Marine Natural Products
作者:Gaurav G. Dake、Krishna P. Kaliappan
DOI:10.1021/acs.joc.4c00462
日期:2024.4.19
Herein, we describe our efforts culminating in the totalsyntheses of discoipyrroles A, B, and C in 6, 6, and 7 steps respectively with excellent overall yield. Totalsyntheses of these unique natural products have been accomplished involving microwave-mediated Paal–Knorr pyrrole synthesis, Pd-catalyzed carbonylative transformation, and MoOPH (Vedejs reagent) oxidation as key reactions to construct