Constituents of a Fern, Davallia mariesii MOORE. III. Revised Structure and Absolute Configuration of Davallialactone

Cheng-Bin CUI; Yasuhiro TEZUKA; Hiroko YAMASHITA; Tohru KIKUCHI; Hirofumi NAKANO; Tatsuya TAMAOKI; Jong-Hee PARK

doi:10.1248/cpb.40.1711

Cheng-Bin CUI, Yasuhiro TEZUKA, Hiroko YAMASHITA, Tohru KIKUCHI, Hirofumi NAKANO, Tatsuya TAMAOKI, Jong-Hee PARK

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Keywords: Davallia mariesii, fern, davallialactone, penta-O-methyldavallialactone, penta-O-methyltetrahydrodavallialactone, dihydrodavallialactone, two dimensional NMR, CD spectrum, absolute configuration

JOURNAL FREE ACCESS

1992 Volume 40 Issue 7 Pages 1711-1717

DOI https://doi.org/10.1248/cpb.40.1711

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Abstract

The structure of davallialactone (1), obtained from the rhizomes of a fern, Davallia mariesii MOORE, was revised on the basis of chemical and spectroscopic evidence. Also, the absolute stereochemistry of 1 was determined to be 5'R, 6'S from a circular dichroism (CD) study of dihydrodavallialactone (2).

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