Stereoselective multigram-scale synthesis of cis- and trans-β-phenylproline derivatives
作者:Isabel Rodríguez、M. Isabel Calaza、Ana I. Jiménez、Carlos Cativiela
DOI:10.1016/j.tet.2012.09.069
日期:2012.11
phenyl substituent attached to the pyrrolidine β carbon (cis- and trans-β-phenylproline) have been developed. The cis derivative was synthesized from N-Boc-β-alanine in six steps and 78% overall yield. The generation of a vinyl triflate with full regiochemical control together with a high-yielding cross-coupling reaction and a completely stereoselective hydrogenation are at the basis of the high efficiency