determination of the two products. The structures of the two components were determined by X-ray crystallography and NMR of their corresponding carbamates 3a and 4a. Additional alkyl carbamates were prepared according to the same approach and two new carbamates 3b and 4d were found to possess higher intramuscular (im) efficacy than the parent compound WR182393 against Plasmodium cynomolgi in Rhesus monkey
已发现报道的WR182393(一种具有高预防性抗疟疾活性的2-
胍基
咪唑烷二酮衍
生物)的合成方法是三种密切相关产品的混合物。WR182393在
水和有机溶剂中的不良溶解性及其不切实际的合成方法,使反应混合物的纯化和结构鉴定成为一项极具挑战性的任务。通过涉及混合物的
氨基甲酸酯形成的前药方法避免了这些问题,这增加了混合物在普通有机溶剂中的溶解度,并促进了两种产物的分离和结构测定。通过X射线晶体学和其相应的
氨基甲酸酯3a和4a的NMR确定这两种组分的结构。