作者:Sri Kamesh Narasimhan、Deborah J. Kerwood、Lei Wu、Jun Li、Rosina Lombardi、Teresa B. Freedman、Yan-Yeung Luk
DOI:10.1021/jo9013047
日期:2009.9.18
motif based on a C3-symmetric bowl-shaped core, on which three substituted amino acids on the periphery adopt either a folded or a spread-out conformation. This class of chiralfolded structures is achieved by controlling the reactivity of the stereogenic protons on the nonplanararomatic rings of trioxatricornan to afford predominantly C3-symmetric isomers. Bromination of trioxatricornan afforded a C1-symmetric