Regio- and Stereoselective Indium Triflate-Mediated Nucleophilic Ring-Opening Reactions of 3-Aza-2-oxabicyclo[2.2.1]hept-5-ene and -[2.2.2]oct-5-ene Systems
摘要:
Indium triflate-mediated nucleophilic ring-opening reactions of 3-aza-2-oxabicyclo[2.2.1]hept-5-ene and -[2.2.2]oct-5-ene systems with alcohols and water were investigated. Reactions of [2.2.1] bicyclic systems gave anti-1,2-,anti-1,4- and syn-1.4-ring-opened products with moderate to excellent regio- and stereoselectivity. When [2.2.2] bicyclic systems were subjected to similar reaction conditions, only anti-1.2 and anti-1,4-ring-opened products were obtained.
N–O Chemistry for Antibiotics: Discovery of <i>N</i>-Alkyl-<i>N</i>-(pyridin-2-yl)hydroxylamine Scaffolds as Selective Antibacterial Agents Using Nitroso Diels–Alder and Ene Chemistry
作者:Timothy A. Wencewicz、Baiyuan Yang、James R. Rudloff、Allen G. Oliver、Marvin J. Miller
DOI:10.1021/jm200794r
日期:2011.10.13
The discovery, syntheses, and structure–activity relationships (SAR) of a new family of heterocyclic antibacterial compounds based on N-alkyl-N-(pyridin-2-yl)hydroxylamine scaffolds are described. A structurally diverse library of ∼100 heterocyclic molecules generated from Lewis acid-mediated nucleophilic ring-opening reactions with nitroso Diels–Alder cycloadducts and nitroso ene reactions with substituted
Regio- and Stereoselective Indium Triflate-Mediated Nucleophilic Ring-Opening Reactions of 3-Aza-2-oxabicyclo[2.2.1]hept-5-ene and -[2.2.2]oct-5-ene Systems
作者:Baiyuan Yang、Marvin J. Miller
DOI:10.1021/jo9016343
日期:2009.10.16
Indium triflate-mediated nucleophilic ring-opening reactions of 3-aza-2-oxabicyclo[2.2.1]hept-5-ene and -[2.2.2]oct-5-ene systems with alcohols and water were investigated. Reactions of [2.2.1] bicyclic systems gave anti-1,2-,anti-1,4- and syn-1.4-ring-opened products with moderate to excellent regio- and stereoselectivity. When [2.2.2] bicyclic systems were subjected to similar reaction conditions, only anti-1.2 and anti-1,4-ring-opened products were obtained.