Revision of the Structures of Isodonal, Rabdolasional and Related Diterpenoids

Yoshio TAKEDA; Tetsuro FUJITA; Han-dong SUN; Yoshinori MINAMI; Masamitsu OCHI; Cheng-Chang CHEN

doi:10.1248/cpb.38.1877

Yoshio TAKEDA, Tetsuro FUJITA, Han-dong SUN, Yoshinori MINAMI, Masamitsu OCHI, Cheng-Chang CHEN

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Keywords: isodonal, rabdolasional, isodonoic acid, trichodonin, 6, 7-seco-ent-kaurenoid, 2D-NMR, structure revision

JOURNAL FREE ACCESS

1990 Volume 38 Issue 7 Pages 1877-1880

DOI https://doi.org/10.1248/cpb.38.1877

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Abstract

The structures of isodonal and rabdolasional were re-examined by means of two-dimensional nuclear magnetic resonance spectroscopy (2D-NMR) and were revised to 1 and 2 from the previously reported structures, 3 and 4. The structures of the chemically correlated diterpenoids, isodonoic acid and trichodonin were also revised to 7 and 8, respectively.

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