Ruthenium-SYNPHOS-Catalyzed Asymmetric Hydrogenations: an Entry to Highly Stereoselective Synthesis of the C15−C30 Subunit of Dolabelide A
作者:Christophe Roche、Nicolas Desroy、Mansour Haddad、Phannarath Phansavath、Jean-Pierre Genet
DOI:10.1021/ol801493w
日期:2008.9.1
An efficient construction of the C15-C30 segment of the cytotoxic macrolide dolabelide A is described. The synthesis relies on ruthenium-SYNPHOS-mediated asymmetric hydrogenation reactions of beta-keto esters to generate the C19, C21, and C27 hydroxyl-bearing stereocenters with very high levels of enantio- and diastereoselectivity.