Phytochemistry of the genus thapsia.

Phytochemistry of the genus thapsia. Research Abstract Details 

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Phytochemistry of the genus thapsia. Abstract Text:

U Rasmussen,S B Christensen,F Sandberg,

In a chemotaxonomic study of the genus THAPSIA (Apiaceae), root material of five taxa has been analysed for skin irritating sesquiterpene lactones and the coumarins, 6-methoxy-7-geranyloxycoumarin and scopoletin. Eight tetraesters of 2, 3, 7, 8, 10, 11-hexahydroxy-C (6)-guaianolide and two triesters of 3, 7, 8, 10, 11-pentahydroxy-C (6)-guaianolide were isolated. One of these, trilobolide, has previously been isolated from LASER TRILOBUM B ORKH., whereas the others are new. They represent a new group of selective histamine liberators. Regarding the investigated constituents, T. GARGANICA L. was found to differ from T. TRANSTAGANA B ROT. T. VILLOSA L. proved to be chemically heterogeneous and the examined plant samples could be divided into four chemical groups, named I-IV. Hydroxylated C (6)-guaianolides were isolated from T. GARGANICA, T. TRANSTAGANA, T. MAXIMA M ILL., T. VILLOSA I and III. No skin irritating guaianolides were detected in either T. VILLOSA II and IV or in ROUYA (THAPSIA) POLYGAMA (D ESF.) C OINCY. 6-Methoxy-7-geranyloxycoumarin showed the same distribution as the guaianolides, whereas scopoletin was found in all the plant samples investigated.

Phytochemistry of the genus thapsia. Publishing Authors By Initials

U Rasmussen,SB Christensen,F Sandberg,

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PUBLICATION TYPE: Journal Article

Journal: Planta medica

VOLUME: 43

Page Numbers: 336-41

Journal Abbreviation: Planta Med.

ISSN: 0032-0943

DAY: 2

MONTH: Dec

YEAR: 1981

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LANGUAGE: eng

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AFFILIATION: Departments of Pharmacognosy and Chemistry BC, Royal Danish School of Pharmacy, Copenhagen Ø, Denmark.

Country: Germany

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MEDLINETA: Planta Med

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