Organoiodine-Catalyzed Enantioselective Intramolecular Oxyaminations of Alkenes with N-(Fluorosulfonyl)carbamate
作者:Takuya Hashimoto、Chisato Wata
DOI:10.1055/s-0037-1610768
日期:2021.8
Organoiodine-catalyzed enantioselective intramolecular oxyaminations were realized by the use of benzyl N-(fluorosulfonyl)carbamate as the exogenous nitrogen source. The method allows access to enantioenriched lactones and oxazolines, starting from γ,δ- and δ,ε-unsaturated esters and N-allyl amides, respectively.
A key step in the synthesis of (3R*,4R*)-Luffariolide E is a 1,2-metallate rearrangement of a higher order cuprate to generate a trisubstituted double bond stereoselectively. The synthetic product is a diastereoisomer of the natural marine cytotoxic agent (3S,4R)-Luffariolide E.
(3R*,4R*)-Luffariolide E 合成的一个关键步骤是通过高阶铜酸盐的 1,2 金属酸盐重排立体选择性地生成三取代双键。合成产物是天然海洋细胞毒剂 (3S,4R)-Luffariolide E 的非对映异构体。