The stereoseleCtive total synthesis of pleurolactone has been accomplished in 7 steps. The key synthetic features were the construction of four contiguous stereocenters using an endo-selective Diels-Alder reaction and high diastereoselective dihydroxylation. (C) 2017 Elsevier Ltd. All rights reserved.
The stereoseleCtive total synthesis of pleurolactone has been accomplished in 7 steps. The key synthetic features were the construction of four contiguous stereocenters using an endo-selective Diels-Alder reaction and high diastereoselective dihydroxylation. (C) 2017 Elsevier Ltd. All rights reserved.
Effect of protic additives in Cu-catalysed asymmetric Diels–Alder cycloadditions of doubly activated dienophiles: towards the synthesis of magellanine-type Lycopodium alkaloids
作者:Vincent N. G. Lindsay、Rebecca A. Murphy、Richmond Sarpong
DOI:10.1039/c7cc06367a
日期:——
highly unstable reaction partners participate effectively in catalytic asymmetric cycloaddition with a functionalised diene. The cycloadduct was used as an intermediate towards the synthesis of magellanine-type Lycopodiumalkaloids featuring a Stille cross-coupling of a highly congested enol triflate and a unique Meinwald rearrangement / cyclopropanation sequence.
Naphthoquinone Diels-Alder Reactions: Approaches to the ABC Ring System of Beticolin
作者:Carsten S. Kramer、Martin Nieger、Stefan Bräse
DOI:10.1002/ejoc.201301763
日期:2014.4
syntheses of highly substituted anthraquinones through Diels–Alder reaction by using naphthoquinones are described. As an application, the first synthesis of the ABC tricycle of beticolin 0 (1) is reported. By using substituted naphthoquinone monoketal dienophiles, the congested quarternary center, the alkenyl methyl group and the oxo-substituent on the Cring could be established in the desired 1,3-relationship
An enantioselective synthesis of (3S,3aS,7aR)-wine lactone, a major aroma component of white wine and citrus juices, was achieved starting from (S)-2-methyl-3-butenoic acid. An intramolecular Diels-Alder reaction was employed as a key step.