A NEW TRITERPENOID SAPONIN (CHROMOSAPONIN-I) WITH A REDUCING POWER

Authors
TSUJINO Y TSURUMI S OSAKAI T SAITO A
Citation
Y. Tsujino et al., A NEW TRITERPENOID SAPONIN (CHROMOSAPONIN-I) WITH A REDUCING POWER, Chemistry Letters, (4), 1994, pp. 711-714
Citations number
7
Categorie Soggetti
Chemistry
Journal title
Chemistry Letters → ACNP
ISSN journal
03667022
Issue
4
Year of publication
1994
Pages
711 - 714
Database
ISI
SICI code
0366-7022(1994):4<711:ANTS(W>2.0.ZU;2-M
Abstract
gamma-Pyronyl-triterpenoid saponin (chromosaponin I; CSI) isolated fro m pea is strongly adsorbed at a glassy-carbon electrode, and gives an irreversible oxidation wave at 0.4 V vs. Ag/AgCl. The gamma-pyronyl mo iety is responsible for the electroactivity. CSI can reduce 1,4-benzoq uinone, some of its derivatives and also cytochrome c. From comparison with other reductants, the formal redox potential of CSI was estimate d to be 0.3-0.4 V vs. NHE (pH 7.0).