Diastereoselective Synthesis of Fulleropyrrolidines from Suitably Functionalized Chiral Cyclobutanes
作者:Beatriz M. Illescas、Nazario Martín、Jordi Poater、Miquel Solà、Gemma P. Aguado、Rosa M. Ortuño
DOI:10.1021/jo0509197
日期:2005.8.1
The firstdiastereoselectivesynthesis of fulleropyrrolidines endowed with diastereomerically pure functionalized cyclobutanes is reported. The new C60-based cyclobutane derivatives 7a,b and 9 are suitably functionalized for further incorporation into peptide surrogates.
Stereoselective Rh-Catalyzed Hydrogenation of Cyclobutyl Chiral Enamides: Double Stereodifferentiation vs Catalyst-Controlled Diastereoselection
作者:Gemma P. Aguado、Albertina G. Moglioni、Elena García-Expósito、Vicenç Branchadell、Rosa M. Ortuño
DOI:10.1021/jo048756u
日期:2004.11.1
hydrogenation reactions of several cyclobutyl enamides derivedfrom (−)-α-pinene or (−)-verbenone have been investigated by using different catalysts. The chiralities of both the substrate and the catalyst as well as the Z/E stereochemistry of the double bond have been considered, and the observed diastereoselectivity has been rationalized. For enamides with the double bond separated from the cyclobutane