作者:Noriyuki Nakajima、Miyoko Matsumoto、Masayuki Kirihara、Masaru Hashimoto、Tadashi Katoh、Shiro Terashima
DOI:10.1016/0040-4020(95)00975-2
日期:1996.1
The title synthesis was examined by employing two synthetic schemes which feature N,O-spiroketal formation as a key step. Although the stepwise synthesis starting with D-fructose and proceeding through the D-psicose derivatives successfully produced a mixture of (+)-hydantocidin (1) and its C5-epimer [(−)-5-epihydantocidin (2)] the one-step synthesis utilizing D-isoascorbic acid and urea as starting
通过采用两种合成方案来研究标题的合成,这些合成方案以N,O-螺酮的形成为关键步骤。尽管以D-果糖开始并逐步进行D-聚乙二醇衍生物的逐步合成成功地产生了(+)-hydantocidin(1)和其C 5 -epimer [(-)-5-epihydantocidin(2)]的混合物发现以D-异抗坏血酸和尿素为起始原料的一步合成比1更有选择性地得到2。还研究了关键的N,O旋体的形成和差向异构在1和2之间,以探索所得结果的一些新颖方面。