Intramolecular Diels−Alder/1,3-Dipolar Cycloaddition Cascade of 1,3,4-Oxadiazoles
摘要:
Full details of a systematic exploration of the intramolecular [4+2]/[3+2] cycloaddition cascade of 1,3,4-oxadiazoles are disclosed in which the scope and utility of the reaction are defined.
Intramolecular Diels−Alder/1,3-Dipolar Cycloaddition Cascade of 1,3,4-Oxadiazoles
摘要:
Full details of a systematic exploration of the intramolecular [4+2]/[3+2] cycloaddition cascade of 1,3,4-oxadiazoles are disclosed in which the scope and utility of the reaction are defined.
Total Synthesis of (+)-Fendleridine (Aspidoalbidine) and (+)-1-Acetylaspidoalbidine
作者:Erica L. Campbell、Andrea M. Zuhl、Christopher M. Liu、Dale L. Boger
DOI:10.1021/ja908819q
日期:2010.3.10
A total synthesis of the Aspidosperma alkaloids (+)-fendleridine and (+)-1-acetylaspidoalbidine is detailed, providing access to both enantiomers of the natural products and establishing their absolute configuration. Central to the synthetic approach is a powerful intramolecular [4+2]/[3+2] cycloaddition cascade of a 1,3,4-oxadiazole in which the pentacyclic skeleton and all the stereochemistry of