Synthesis and N-functionalization of isoxazolidines: a new approach to nucleoside analogues
作者:Carlos A.D. Sousa、José E. Rodríguez-Borges、Xerardo Garcia-Mera
DOI:10.1016/j.tetlet.2014.06.076
日期:2014.8
preparation of non N-functionalized isoxazolidines from BF3-catalyzed 1,3-cycloaddition reactions between methyl glyoxylate oxime and alkenes is described. Subsequently, isoxazolidines were N-functionalized with three chemically active groups (2-chloroethyl, cyanomethyl and 2-acetoxyethyl), thus allowing the preparation of a wide array of N-functionalized isoxazolidines. The compounds were characterized
描述了由乙醛酸甲酯肟和烯烃之间的BF 3催化的1,3-环加成反应制备非N-官能化异恶唑烷的直接合成方法。随后,用三个化学活性基团(2-氯乙基,氰基甲基和2-乙酰氧基乙基)对异恶唑烷进行N-官能化,从而可以制备各种各样的N-官能化的异恶唑烷。借助于1 H和13 C NMR光谱法和质谱对化合物进行表征。X射线分析用于立体化学阐明。