Synthesis and studies on the antiviral activities of substituted γ-butyrolactones and butenolides
作者:A. A. Avetisyan、R. G. Nazaryan、A. N. Dzhandzhapanyan、V. I. Votyakov、S. V. Khlyustov、G. V. Vladyko、V. Ya. Klimovich、L. V. Korobchenko、M. N. Shashikhina、S. V. Zhavrid
DOI:10.1007/bf00761539
日期:1982.7
tertiary ~-ketols with substituted cyanoacetic esters leads to the formation of the corresponding acyano-B-butyrolactones (I-IV); the secondary ketoalcohols (acyloins) react with substituted acetoacetic and malonic esters to form respectively ~-acetyland ~-carbethoxy-~,B,y-trialkyl-&~Y-butenolides (V-VII), while the tertiary ~-ketols react with substituted malonic esters to yield ~,~,y,y-tetralkyl-A~B-butenolides
为了进一步评估该反应,我们研究了在碱性催化剂钾和乙醇钠存在下~-酮醇与烷基取代的假酸的相互作用。反应的进程取决于初始反应物的性质,但在所有情况下内酯衍生物均以高产率形成。使用钾肥可获得最佳结果。例如,仲和叔酮醇与取代的氰基乙酸酯的缩合导致相应的氰基-B-丁内酯(I-IV)的形成;仲酮醇(acyloins)与取代的乙酰乙酸和丙二酸酯反应分别形成~-乙酰基和~-carbethoxy-~,B,y-三烷基-&~Y-丁烯内酯(V-VII),而叔~-酮醇与取代丙二酸酯产生~,~,y,