New coumarins from Pterocaulon polystachyum.

Abstract:

:Aerial parts of Pterocaulon polystachyum from Chaco province, Argentina, afforded the known coumarins ayapin, isoscopoletin, prenyletin, prenyletin methyl ether, virgatenol, obtusinin, 5-methoxy-6,7-methylenedioxycoumarin, 5-(3,3-dimethylallyloxy)-6,7-methylenedioxycoumarin, 5-(2',3'-dihydroxy-3-methylbutanoxy)-6,7-methylenedioxycoumarin, haplopinol methyl ether, 6-(1,1-dimethyl-2-propenyl)-7-hydroxycoumarin and demethylnieshoutin; the last two are new as natural products while the five new coumarins from the collection were isovirgatenol, 3'-deoxyobtusinin, 6-methoxy-7-(2'-hydroxyethoxy)-coumarin, 5-(2'-hydroxyethoxy)-6,7-methylenedioxycoumarin and a substance tentatively identified as 5-hydroxy-6,7-methylenedioxy-8-(3,3-dimethylallyl)-coumarin.

journal_name

Planta Med

journal_title

Planta medica

authors

Vera N,Bardón A,Catalán CA,Gedris TE,Herz W

doi

10.1055/s-2001-17365

subject

Has Abstract

pub_date

2001-10-01 00:00:00

pages

674-7

issue

7

eissn

0032-0943

issn

1439-0221

journal_volume

67

pub_type

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