Chemical Studies on Sophora tomentosa : the Isolation of a New Class of Isoflavonoid

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Author(s)

Abstract

Two new pterocarpans, sophoracarpans A and B, were isolated from Sophora tomentosa L. (Leguminosae) in addition to three known isoflavonoids, wighteone (erythrinin B), sophoraisoflavanone A and l-maackiain. The structures of sophoracarpans A and B were elucidated as 6β, 9-dimethoxy-3-hydroxypterocarpan and 3-hydroxy-6β-methoxy-8,9-methylenedioxypterocarpan, respectively, on the spectroscopic basis. The configurations at C-6,C-6a, and C-11a of both compounds were determined by a series of nuclear magnetic resonance irradiation experiments. The isoflavone wighteone, known as an antifungal phytoalexin in several genera of leguminous plants, was also found to occur in the genus Sophora.

Journal

  • Chemical & pharmaceutical bulletin

    Chemical & pharmaceutical bulletin 38(10), 2756-2759, 1990-10-25

    The Pharmaceutical Society of Japan

Codes

  • NII Article ID (NAID)
    110003628145
  • NII NACSIS-CAT ID (NCID)
    AA00602100
  • Text Lang
    ENG
  • ISSN
    00092363
  • Data Source
    NII-ELS 
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