Remote stereochemical control in asymmetric Diels–Alder reactions: synthesis of the angucycline antibiotics, (−)-tetrangomycin and MM 47755
作者:John S. Landells、David S. Larsen、Jim Simpson
DOI:10.1016/s0040-4039(03)01228-0
日期:2003.7
The first asymmetric syntheses of the angucycline antibiotics, (-)-tetrangomycin and MM 47755, are achieved via a short efficient sequence starting from the chiral Lewis acid promoted Diels-Alder reaction of 5-hydroxy-1,4-naphthoquinone and (+/-)-(E)-5-dimethylphenylsilyl-5-methyl-1-(2'-trimethylsiloxyvinyl)cyclohexene 7 where an effective kinetic resolution of the latter, controlled by its remote stereocentre, is described. (C) 2003 Elsevier Science Ltd. All rights reserved.