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Y. Asakawa, M. Toyota and L. Harrison, “Isotachin A and Isotachin B, Two Sulphur-Containing Acrylates from the Liverwort Isotachis japonica,” Phytochemistry, Vol. 24, No. 7, 1985, pp. 1505-1508. http://dx.doi.org/10.1016/S0031-9422(00)81055-9

has been cited by the following article:

• TITLE: Microtropins J-P: 6’-O-(2”S,3”R)-2”-Ethyl-2”,3”-Dihydroxybutyrates of Phenolic Alcohol ß-D-Glucopyranosides from the Branches of Microtropis japonica

  AUTHORS: Yuka Uemura, Sachiko Sugimoto, Katsuyoshi Matsunami, Hideaki Otsuka, Yoshio Takeda

  KEYWORDS: Microtropis japonica; Celastraceae; Microtropin; (2S, 3R)-2-Ethyl-2, 3-Dihydroxybutyrate

  JOURNAL NAME: American Journal of Plant Sciences, Vol.4 No.10, October 9, 2013

  ABSTRACT: From the branches of Microtropis japonica (Celastraceae), seven phenolic alcohol glucosides, named microtropins J-P (1-7), were isolated. The 6-position of glucose was esterified with 2-ethyl-2,3-dihydroxybutyric acid. Microtropin K (2) was hydrolyzed under a mild basic condition to give methyl (2S,3R)-2-ethyl-2,3-dihydroxybutyrate, whose absolute structure was determined by the comparison of NMR data and the optical rotation value with that reported.