申请人:BioCryst Pharmaceuticals, Inc.
公开号:US20040254181A1
公开(公告)日:2004-12-16
Derivatives of 9-deazaguanine are prepared by reacting an aldehyde or ketone with a dialkylaminomalonate to form the corresponding enamine. The enamine is then reacted with a base to form a cyclic pyrrole. The cyclic pyrrole is reacted with an urea compound or a derivative of carbamimidoic acid to provide a protected guanidino compound. The guanidino is converted to the desired 9-deazaguanine derivative by reacting with trifluoracetic acid or with an alkoxide or hydroxide followed by neutralization with an acid.
9-脱氧鸟嘌呤的衍生物是通过将醛或酮与二烷基氨基丙二酸酯反应制备相应的烯胺。然后,将烯胺与碱反应形成环状吡咯。将环状吡咯与尿素化合物或羰基脲酸衍生物反应,以提供受保护的胍基化合物。通过与三氟乙酸或烷氧化物或氢氧化物反应,然后用酸中和将胍基化合物转化为所需的9-脱氧鸟嘌呤衍生物。