Vanadium Bromoperoxidase-Catalyzed Biosynthesis of Halogenated Marine Natural Products
作者:Jayme N. Carter-Franklin、Alison Butler
DOI:10.1021/ja047925p
日期:2004.11.1
Marine red algae (Rhodophyta) are a rich source of bioactive halogenated natural products. The biogenesis of the cyclic halogenated terpene marine natural products, in particular, has attracted sustained interest in part because terpenes are the biogenic precursors of many bioactive metabolites. The first enzymatic asymmetric bromination and cyclization of a terpene, producing marine natural products
Enantiospecific Solvolytic Functionalization of Bromochlorides
作者:Alexander J. Burckle、Bálint Gál、Frederick J. Seidl、Vasil H. Vasilev、Noah Z. Burns
DOI:10.1021/jacs.7b07792
日期:2017.9.27
Herein, we report that under mild solvolytic conditions, enantioenriched bromochlorides can be ionized, stereospecifically cyclized to an array of complex bromocyclic scaffolds, or intermolecularly trapped by exogenous nucleophiles. Mechanistic investigations support an ionic mechanism wherein the bromochloride serves as an enantioenriched bromonium surrogate. Several natural product-relevant motifs