Asymmetric Hydrogen Bonding Catalysis for the Synthesis of Dihydroquinazoline-Containing Antiviral, Letermovir
作者:Cheol K. Chung、Zhijian Liu、Katrina W. Lexa、Teresa Andreani、Yingju Xu、Yining Ji、Daniel A. DiRocco、Guy R. Humphrey、Rebecca T. Ruck
DOI:10.1021/jacs.7b05806
日期:2017.8.9
A weak Brønsted acid-catalyzed asymmetric guanidine aza-conjugate addition reaction has been developed. C2-symmetric, dual hydrogen-bond donating bistriflamides are shown to be highly effective in activating α,β-unsaturated esters toward the intramolecular addition of a pendant guanidinyl nucleophile. Preliminary mechanistic investigation, including density functional theory calculations and kinetics
已开发出弱布朗斯台德酸催化的不对称胍氮杂-共轭加成反应。C2 对称的双氢键供体双氟虫胺在激活 α,β-不饱和酯以实现悬垂的胍基亲核试剂的分子内加成方面非常有效。初步机理研究,包括密度泛函理论计算和动力学研究,支持共轭加成途径在能量上比替代电环化途径更有利。该方法已成功应用于含 3,4-二氢喹唑啉的抗病毒药物莱特莫韦和一系列类似物的合成。