Hydrolyzable tannins having a depsidone-forming valoneoyl group

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

doi:10.3987/com-90-5429

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 journal › Article › peer-review

7 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 language	English
Pages (from-to)	1221-1224
Number of pages	4
Journal	Heterocycles
Volume	31
Issue number	7
DOIs	https://doi.org/10.3987/com-90-5429
Publication status	Published - Jul 1 1990

ASJC Scopus subject areas

Analytical Chemistry
Pharmacology
Organic Chemistry

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title = "Hydrolyzable tannins having a depsidone-forming valoneoyl group",

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.",

author = "Tsutomu Hatano and Osamu Namba and Ling Chen and Taeko Yasuhara and Kazufumi Yazaki and Takashi Yoshida and Takuo Okuda",

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T1 - Hydrolyzable tannins having a depsidone-forming valoneoyl group

AU - Hatano, Tsutomu

AU - Namba, Osamu

AU - Chen, Ling

AU - Yasuhara, Taeko

AU - Yazaki, Kazufumi

AU - Yoshida, Takashi

AU - Okuda, Takuo

PY - 1990/7/1

Y1 - 1990/7/1

N2 - 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.

AB - 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.

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VL - 31

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EP - 1224

JO - Heterocycles

JF - Heterocycles

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ER -

Hydrolyzable tannins having a depsidone-forming valoneoyl group

Abstract

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