Asymmetric Total Synthesis of the Gastroprotective Microbial Agent AI-77-B
作者:Arun K. Ghosh、Alexander Bischoff、John Cappiello
DOI:10.1002/ejoc.200390125
日期:2003.3
An enantioselective totalsynthesis of the pseudopeptide microbial agent AI-77-B, which has shown potent antiulcerogenic properties, is described. The synthesis is convergent and involves the assembly of a dihydroisocoumarin fragment and a hydroxy amino acid. The dihydroisocoumarin derivative was synthesised by means of a Diels-Alder reaction between 1-methoxy-1,3-cyclohexadiene and an alkynyl ester