An efficient, asymmetric solid-phase synthesis of benzothiadiazine-substituted tetramic acids: Potent inhibitors of the hepatitis C virus RNA-dependent RNA polymerase
作者:Karen A. Evans、Deping Chai、Todd L. Graybill、George Burton、Robert T. Sarisky、Juili Lin-Goerke、Victor K. Johnston、Ralph A. Rivero
DOI:10.1016/j.bmcl.2006.01.034
日期:2006.4
An efficient, asymmetric solid-phase synthesis of benzothiadiazine-substituted tetramic acids is reported. Starting from commercially available chiral Fmoc-protected alpha-amino acids loaded onto Wang resin, Fmoc removal, reductive amination followed by amide bond formation, and base-catalyzed cyclization with simultaneous cleavage from the resin provided the desired products. Compounds described are
据报道,苯并噻二嗪取代的四酸的有效,不对称固相合成。从负载在Wang树脂上的市售手性Fmoc保护的α-氨基酸开始,进行Fmoc去除,还原胺化,随后形成酰胺键以及碱催化的环化反应,同时从树脂上裂解,即可提供所需的产物。所描述的化合物是丙型肝炎病毒RNA依赖性RNA聚合酶的有效抑制剂。