A Highly Efficient, Asymmetric Synthesis of Benzothiadiazine-Substituted Tetramic Acids: Potent Inhibitors of Hepatitis C Virus RNA-Dependent RNA Polymerase
作者:Duke M. Fitch、Karen A. Evans、Deping Chai、Kevin J. Duffy
DOI:10.1021/ol052371w
日期:2005.11.1
[reaction: see text] An efficient two-pot, asymmetric synthesis of benzothiadiazine-substituted tetramic acids is reported. Starting from commercially available alpha-amino acids or esters, reductive amination followed by a novel one-pot amide bond formation/Dieckmann cyclization provided the desired products in high yield and optical purity. An analogous solid-phase approach to the same targets is
[反应:见正文]据报道,高效的两锅,不对称合成苯并噻二嗪取代的四酸。从可商购获得的α-氨基酸或酯开始,进行还原胺化反应,然后进行新颖的一锅酰胺键形成/狄克曼环化反应,从而以高收率和光学纯度提供了所需的产物。还提出了针对相同目标的类似固相方法。发现这些化合物是丙型肝炎病毒RNA依赖性RNA聚合酶的有效抑制剂。