作者:Hiromi Sano、Shigeru Mio、Junko Kitagawa、Masahiro Shindou、Toyokuni Honma、Soji Sugai
DOI:10.1016/0040-4020(95)00810-u
日期:1995.11
Synthesis of Spirothiohydantoin derivatives of hydantocidin is described. The key feature of the synthesis was Spirothiohydantoin ring formation through an iminophosphorane intermediate. Spirothiohydantoin derivative 2 maintained comparable herbicidal activity to that of the natural compound except against fall panicum, when applied through a foliage of weeds at 1000 ppm. Surprisingly, its epimer 15
描述了hydantocidin的螺硫乙内酰脲衍生物的合成。合成的关键特征是通过亚氨基膦烷中间体形成螺硫乙内酰脲环。当以1000 ppm的杂草叶施用时,螺硫乙内酰脲衍生物2保持了与天然化合物相当的除草活性,但对秋天的panicum除外。令人惊讶的是,其差向异构体15在相同条件下也表现出良好的除草活性,而5-表位抗腐素16显示出公平的活性。