Synthesis of Macrocyclic β-Strand Templates by Ring Closing Metathesis
作者:Andrew D. Abell、Nathan A. Alexander、Steven G. Aitken、Hongyuan Chen、James M. Coxon、Matthew A. Jones、Stephen B. McNabb、Andrew Muscroft-Taylor
DOI:10.1021/jo802723w
日期:2009.6.5
We report the synthesis of macrocycles 1−6 via ringclosingmetathesis of dienes 7−12. Addition of chlorodicyclohexylborane to thermal and microwave assisted RCM of dienes 8 and 9 markedly improves the yield. The geometric isomers of macrocycles 1−3 and 5 have been assigned using X-ray crystallography and NMR.