Medicinal foodstuffs. II. On the bioactive constituents of the tuber of Sagittaria trifolia L. (Kuwai, Alismataceae): Absolute stereostructures of trifoliones A, B, C, and D, sagittariosides a and b, and arabinothalictoside

DOI: 10.1248/cpb.44.492

Source and publish data:

Chemical and Pharmaceutical Bulletin p. 492 - 499 (1996)

Update date:2022-08-03

Topics:

Authors:

Yoshikawa

Yoshizumi

Murakami

Matsuda Matsuda

Yamahara

Murakami

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Article abstract of DOI:10.1248/cpb.44.492

From the medicinal foodstuff 'kuwai', the tuber of Sagittaria trifolia L., four bioactive diterpene ketones, trifoliones A, B, C, and D, two diterpene glucosides, sagittariosides a and b, and a nitroethylphenol glycoside, arabinothalictoside, were isolated, together with six known diterpenes. Their absolute stereostructures were determined on the basis of chemical and physicochemical evidence which included the application of a modified Mosher's method and an exciton chirality method. Among the diterpene constituents, trifoliones A, B, C, and D exhibited inhibitory effects on the histamine release from rat mast cells induced by compound 48/80 and calcium ionophore A-23187.

Full text of DOI:10.1248/cpb.44.492

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