Multicomponent Approach to the Synthesis of Oxidized Amides through Nitrile Hydrozirconation
作者:Shuangyi Wan、Michael E. Green、Jung-Hyun Park、Paul E. Floreancig
DOI:10.1021/ol702184n
日期:2007.12.1
"Oxidized" amides, as represented by acyl aminals and acyl hemiaminals, are integral subunits of several natural products that exhibit useful biological activity. In this paper a multicomponent approach to these groups from acylimine intermediates is demonstrated. The acylimines; are accessed through a sequence of nitrile hydrozirconation and acylation, making this highly versatile amide synthesis useful for a range of applications in target- and diversity-oriented synthesis.
A mild one-pot method for the synthesis of acyclic N-(1-methoxyalkyl)amides starting from carboxylic acids and methyl imidates had been developed and applied to the total synthesis of the insect poison pederine .
one-pot method for the synthesis of acyclic N-(1-methoxyalkyl)amides starting from carboxylic acid and methyl imidates has been developed and applied to the first total synthesis of (+)-pederine (1), a potent insect poison. Furthermore, the stereocontrolledtotal synthesis of 1 was also achieved by employing acid catalyzed double alkoxy-exchange reaction of N-(1 -methoxylakyl)amide group as key step.