Flow synthesis of tricyclic spiropiperidines as building blocks for the histrionicotoxin family of alkaloids
作者:Malte Brasholz、Brian A. Johnson、James M. Macdonald、Anastasios Polyzos、John Tsanaktsidis、Simon Saubern、Andrew B. Holmes、John H. Ryan
DOI:10.1016/j.tet.2010.04.092
日期:2010.8
A domino cyclization reaction of the bis-unsaturated ketone 3 with hydroxylamine proceeds with good yield and high stereoselectivity, in a flow reactor system. The tricyclic spiropiperidine products 5 and 2 obtained are valuable building blocks for the synthesis of analogues of the histrionicotoxin alkaloids. (C) 2010 Elsevier Ltd. All rights reserved.