Hydrolyzable tannins having a depsidone-forming valoneoyl group

Tsutomu Hatano, Osamu Namba, Ling Chen, Taeko Yasuhara, Kazufumi Yazaki, Takashi Yoshida, Takuo Okuda

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Prostratin C (1) isolated from Euphorbia prostrata, and praecoxins C (2) and D (3) isolated from Stachyurus praecox, were found to be hydrolyzable tannins having a depsidone-forming valoneoyl group as a constituent unit. The orientation of the valoneoyl group in praecoxins C and D as in the structures 2 and 3 was unequivocally proved by the 1H-13C long-range shift correlation spectrum of rugosin C (5) which was chemically correlated with praecoxin C.

Original languageEnglish
Pages (from-to)1221-1224
Number of pages4
JournalHeterocycles
Volume31
Issue number7
Publication statusPublished - Jul 1 1990

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Hydrolyzable Tannins
Euphorbia
depsidone
prostratin

ASJC Scopus subject areas

  • Organic Chemistry

Cite this

Hatano, T., Namba, O., Chen, L., Yasuhara, T., Yazaki, K., Yoshida, T., & Okuda, T. (1990). Hydrolyzable tannins having a depsidone-forming valoneoyl group. Heterocycles, 31(7), 1221-1224.

Hydrolyzable tannins having a depsidone-forming valoneoyl group. / Hatano, Tsutomu; Namba, Osamu; Chen, Ling; Yasuhara, Taeko; Yazaki, Kazufumi; Yoshida, Takashi; Okuda, Takuo.

In: Heterocycles, Vol. 31, No. 7, 01.07.1990, p. 1221-1224.

Research output: Contribution to journalArticle

Hatano, T, Namba, O, Chen, L, Yasuhara, T, Yazaki, K, Yoshida, T & Okuda, T 1990, 'Hydrolyzable tannins having a depsidone-forming valoneoyl group', Heterocycles, vol. 31, no. 7, pp. 1221-1224.
Hatano T, Namba O, Chen L, Yasuhara T, Yazaki K, Yoshida T et al. Hydrolyzable tannins having a depsidone-forming valoneoyl group. Heterocycles. 1990 Jul 1;31(7):1221-1224.
Hatano, Tsutomu ; Namba, Osamu ; Chen, Ling ; Yasuhara, Taeko ; Yazaki, Kazufumi ; Yoshida, Takashi ; Okuda, Takuo. / Hydrolyzable tannins having a depsidone-forming valoneoyl group. In: Heterocycles. 1990 ; Vol. 31, No. 7. pp. 1221-1224.
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