用途
1-(3-吡啶基)-3-(二甲氨基)-2-丙烯-1-酮是一类重要的有机合成反应中间体,广泛应用于医药、天然产物及功能材料等领域。
合成方法
向装有机械搅拌器和回流冷凝器的250毫升单颈圆底烧瓶中加入乙酰吡啶(11毫升,0.1摩尔)、N,N-二甲基甲酰胺二甲基缩醛(27毫升,0.2摩尔)和二甲苯(35毫升)。将反应物料加热至140°C并保持20小时,每4小时通过蒸馏除去反应中形成的甲醇。当反应质量的TLC表明不存在起始化合物时,将反应混合物冷却至室温。向反应物料中加入己烷(20ml),并在搅拌下保持20分钟,使物料温度变化不超过5℃。过滤收集所得反应物并用己烷洗涤,粗产物由二甲苯重结晶得到1-(3-吡啶基)-3-(二甲氨基)-2-丙烯-1-酮,产率为16.3g,92.6%,为黄色晶体,熔点81-82°C。
The efficacy and side-effects of drugs do not just reflect the biochemical and pharmacodynamic properties of the parent compound, but often comprise of cooperative effects between the properties of the parent and active metabolites. Metabolites of imatinib, nilotinib and midostaurin have been synthesised and evaluated in assays to compare their properties as protein kinase inhibitors with the parent drugs. The N-desmethyl-metabolite of imatinib is substantially less active than imatinib as a BCR-ABL1 kinase inhibitor, thus providing an explanation as to why patients producing high levels of this metabolite show a relatively low response rate in chronic myeloid leukaemia (CML) treatment. The hydroxymethylphenyl and N-oxide metabolites of imatinib and nilotinib are only weakly active as BCR-ABL1 inhibitors and are unlikely to play a role in the efficacy of either drug in CML. The 3-(R)-HO-metabolite of midostaurin shows appreciable accumulation following chronic drug administration and, in addition to mutant forms of FLT3, potently inhibits the PDPK1 and VEGFR2 kinases (IC50 values