Studies on the Constituents of Lespedeza homoloba NAKAI. III. The Structures of Lespein and Lespedezin

AKIRA UENO; MASAHIRO ICHIKAWA; SEIGO FUKUSHIMA; YASUHISA SAIKI; TADATAKA NORO; KUNIO MORINAGA; HARUMITSU KUWANO

doi:10.1248/cpb.21.2715

AKIRA UENO, MASAHIRO ICHIKAWA, SEIGO FUKUSHIMA, YASUHISA SAIKI, TADATAKA NORO, KUNIO MORINAGA, HARUMITSU KUWANO

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JOURNAL FREE ACCESS

1973 Volume 21 Issue 12 Pages 2715-2721

DOI https://doi.org/10.1248/cpb.21.2715

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Abstract

Two new coumaranochromane derivatives named lespein and lespedezin were isolated from the bark of Lespedeza homoloba NAKAI. On the base of the chemical and spectral data, their structures were established as (-) lespein : 6a, 10-diisopentenyl-3, 9-dihydroxy-(6aR, 11aR) pterocarpan and lespedezin : 10-geranyl-3, 9-dihydroxypterocarpan.

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