Anthraquinones from Neonauclea calycina and their inhibitory activity against DNA topoisomerase II.
Biol Pharm Bull
; 21(6): 641-2, 1998 Jun.
Article
in En
| MEDLINE
| ID: mdl-9657055
ABSTRACT
In a series of searches for DNA topoisomerase II inhibitors from naturally occurring compounds, a wood extract of Neonauclea calycina MERR. (Rubiaceae) showed a moderate effect in vitro. Purification of the extract resulted in the isolation of seven known anthraquinones. The structures were characterized as damnacanthal, rubiadin 1-methyl ether, nordamnacanthal, morindone, damnacanthol, lucidin 3-O-primeveroside and morindone 6-O-primeveroside by spectral analysis, respectively. Damnacanthal and morindone showed an intensive inhibitory effect against topoisomerase II (IC50 20 micrograms/ml and 21 micrograms/ml).
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Trees
/
Anthraquinones
/
Enzyme Inhibitors
/
Topoisomerase II Inhibitors
/
Antineoplastic Agents, Phytogenic
Language:
En
Journal:
Biol Pharm Bull
Journal subject:
BIOQUIMICA
/
FARMACOLOGIA
Year:
1998
Document type:
Article
Affiliation country:
Japan