CONSTITUENTS OF THE SEEDS OF GARCINIA-KOLA - 2 NEW ANTIOXIDANTS, GARCINOIC ACID AND GARCINAL

Authors
TERASHIMA K SHIMAMURA T TANABAYASHI M AQIL M AKINNIYI JA NIWA M
Citation
K. Terashima et al., CONSTITUENTS OF THE SEEDS OF GARCINIA-KOLA - 2 NEW ANTIOXIDANTS, GARCINOIC ACID AND GARCINAL, Heterocycles, 45(8), 1997, pp. 1559-1566
Citations number
9
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Heterocycles → ACNP
ISSN journal
03855414
Volume
45
Issue
8
Year of publication
1997
Pages
1559 - 1566
Database
ISI
SICI code
0385-5414(1997)45:8<1559:COTSOG>2.0.ZU;2-I
Abstract
Two new chromanols, named garcinoic acid and garcinal, were isolated t ogether with a known chromanol, delta-tocotrienol and three known bifl avonoids, garcinianin, GB-1 and GB-2, from the seeds of Garcinia kola Heckel (Guttiferae) collected in Nigeria and their structures were cha racterized on the basis of the spectroscopic and chemical evidence. Ga rcinoic acid, garcinal and delta-tocotrienol showed about 1.5 times st ronger antioxidation activity than that of dl-alpha-tocopherol.