Non-canonical regioisomerizations and a ‘Diels–Alderase’ are likely essential in the biosynthesis of Spiculoic acid A
摘要:
The regiochemistry of dehydration and cyclization steps of the linear biosynthetic precursor of the polyketide natural product Spiculoic acid A (1) were examined. Herein we describe the synthesis of polyene-containing aldehyde 21, a counterpart to the metabolite's putative polyketide intermediate and demonstrate its inability to undergo facile IMDA chemistry. These results suggest the involvement of a non-canonical regioisomerization in the biosynthesis of 1, and that the IMDA reaction is likely enzyme-catalyzed. (c) 2012 Elsevier Ltd. All rights reserved.
[EN] INDOLE DERIVATIVES AS ALPHA-1 -ANTITRYPSIN MODULATORS FOR TREATING ALPHA-1 -ANTITRYPSIN DEFICIENCY (AATD) [FR] DÉRIVÉS D'INDOLE UTILISÉS EN TANT QUE MODULATEURS D'ALPHA-1-ANTITRYPSINE POUR TRAITER UNE DÉFICIENCE EN ALPHA-1-ANTITRYPSINE (AATD)