The synthesis of (+)-marmelo lactones A and B and the assignment of the absolute configurations of marmelo lactones.

DOI DOI Open Access
  • NISHIDA Yoshihiro
    Department of Food Chemistry, Faculty of Agriculture, Tohoku University
  • OHRUI Hiroshi
    Department of Food Chemistry, Faculty of Agriculture, Tohoku University
  • MEGURO Hiroshi
    Department of Food Chemistry, Faculty of Agriculture, Tohoku University

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Description

(+)-Marmelo Lactones A (VA) and B (VB) were synthesized from erythro-γ-methyl-L-glutamic acid (IA) and threo acid (IB), respectively. The absolute configurations of natural marmelo lactones were thus determined to be (2R, 4S) for (+)-marmelo lactone A and (2R, 4R) for (-)-marmelo lactone B.

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