First Total Synthesis of 4-Methylthio-3-butenyl Glucosinolate

  • YAMAZOE Sayumi
    Graduate School of Life and Environmental Sciences, University of Tsukuba Institute for Chemical Research and Institute for Integrated Cell-Material Sciences, Kyoto University
  • HASEGAWA Koji
    Graduate School of Life and Environmental Sciences, University of Tsukuba
  • SHIGEMORI Hideyuki
    Graduate School of Life and Environmental Sciences, University of Tsukuba

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The first total synthesis of 4-methylthio-3-butenyl glucosinolate (MTBG), a natural bioactive compound and a precursor of radish phototropism-regulating substances, was achieved from commercially available 1,4-butanediol. The glucosinolate framework was prepared by coupling of an oximyl chloride derivative and tetraacetyl thioglucose. A methylthio group was introduced to the framework by a Wittig reaction between triphenylphosphonium thiomethylmethylide and an aldehyde intermediate of glucosinolate. The synthetic route should facilitate preparation of various derivatives needed for probe synthesis based on MTBG.

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