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4'-deoxy iridoid glycosides from Centranthus longiflorus
Ayşe Kuruüzüm-Uz1, Zuhal Güvenalp, L Omür Demirezer
1Hacettepe University, Faculty of Pharmacy, Department of Pharmacognosy, TR-06100, Ankara, Turkey. ayseuz@hacettepe.edu.tr
Phytochemistry
|November 28, 2002
Abstract:
The new iridoid glycosides, 4'-deoxykanokoside A and 4'-deoxykanokoside C, were isolated from the methanolic root extract of Centranthus longiflorus ssp. longiflorus. They were accompanied by the three known iridoid glycosides, kanokoside A, kanokoside C and valerosidatum, and two known phenylpropanoid glycosides, coniferin and isoconiferinoside. The structures were elucidated mainly by spectroscopic methods. The presence of 4-deoxy glucose as a part of plant glycosides is rather unusual. Cytotoxic effects of the isolated compounds were also investigated.