The synthesis of a series of new chiral α-aminonitriles was achieved in a diastereoselective Strecker reaction in a one-pot procedure with aldehydes, enantiopure amines, and acetone cyanohydrin in water. Primary and secondary amines derived from L-α-amino acids were used as sources of chirality. The reactions proceeded efficiently without any catalyst at room temperature. The diastereoselectivity of
Novel Domino Cyclization of Tryptophan-Derived Amino Nitriles: Scope and Stereoselectivity
作者:Juan A. González-Vera、M. Teresa García-López、Rosario Herranz
DOI:10.1021/jo051441+
日期:2005.10.1
acid-promoted cyclization of new tryptophan-based α-amino nitriles derived from either ketones or aldehydes to novel hexahydropyrrolo[1‘,2‘,3‘:1,9a,9]imidazo[1,2-a]indoles is described. This cyclization involves the generation of two or three stereogenic centers. The time and stereoselectivity of this reaction mostly depended on both the steric volume of the substituents at the aminonitrile and its stereochemistry