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- W2105804977 endingPage "3191" @default.
- W2105804977 startingPage "3191" @default.
- W2105804977 abstract "The concise and efficient total synthesis of (+)-bionectins A and C is described. Our approach to these natural products features a new and scalable method for erythro-β-hydroxytryptophan amino acid synthesis, an intramolecular Friedel–Crafts reaction of a silyl-tethered indole, and a new mercaptan reagent for epipolythiodiketopiperazine (ETP) synthesis that can be unravelled under very mild conditions. In evaluating the impact of C12-hydroxylation, we have identified a unique need for an intramolecular variant of our Friedel–Crafts indolylation chemistry. Several key discoveries including the first example of permanganate-mediated stereoinvertive hydroxylation of the α-stereocenters of diketopiperazines as well as the first example of a direct triketopiperazine synthesis from a parent cyclo-dipeptide are discussed. Finally, the synthesis of (+)-bionectin A and its unambiguous structural assignment through X-ray analysis provides motivation for the reevaluation of its original characterization data and assignment." @default.
- W2105804977 created "2016-06-24" @default.
- W2105804977 creator A5049124096 @default.
- W2105804977 creator A5057797551 @default.
- W2105804977 creator A5081366480 @default.
- W2105804977 creator A5087795279 @default.
- W2105804977 date "2013-01-01" @default.
- W2105804977 modified "2023-09-25" @default.
- W2105804977 title "Concise total synthesis of (+)-bionectins A and C" @default.
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