Production of xanthones with free radical scavenging properties, emodin and sclerotiorin by the cultured lichen mycobionts of Pyrenula japonica

Authors
Takenaka, Y Tanahashi, T Nagakura, N Hamada, N
Citation
Y. Takenaka et al., Production of xanthones with free radical scavenging properties, emodin and sclerotiorin by the cultured lichen mycobionts of Pyrenula japonica, Z NATURFO C, 55(11-12), 2000, pp. 910-914
Citations number
10
Categorie Soggetti
Biochemistry & Biophysics
Journal title
ZEITSCHRIFT FUR NATURFORSCHUNG C-A JOURNAL OF BIOSCIENCES
ISSN journal
09395075 → ACNP
Volume
55
Issue
11-12
Year of publication
2000
Pages
910 - 914
Database
ISI
SICI code
0939-5075(200011/12)55:11-12<910:POXWFR>2.0.ZU;2-5
Abstract
From the cultures of the spore-derived mycobionts of the lichen Pyrenula ja ponica, two new xanthones, 1,8-dihydroxy-3-hydroxymethyl-5-methoxyxanthone and 1,2,8-trihydroxy-5-methoxy-3-methylxanthone, were isolated along with 1 ,7-dihydroxy-3-methylxanthone, 1,5,8-trihydroxy-3-methylxanthone, 1,8-dihyd roxy-5-methoxy-3-methylxanthone, emodin and sclerotiorin. Their structures were determined by spectroscopic methods. Sclerotiorin was isolated for the first time from lichen mycobionts. Radical scavenging activities of the is olated xanthones were also studied.