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Iridoids with anti-inflammatory activity from Vitex peduncularis
A Suksamrarn1, S Kumpun, K Kirtikara
1Department of Chemistry, Ramkhamhaeng University, Bangkok, Thailand. apichart@ram1.ru.ac.th
Abstract:
A new iridoid, pedunculariside, together with the known iridoid agnuside were isolated from the butanol extract of Vitex peduncularis stem bark. Both pedunculariside and agnuside showed preferential inhibition of COX-2, with IC50 values of 0.15 +/- 0.21 mg/ml and 0.026 +/- 0.015 mg/ml respectively, while having only small inhibitory effects on COX-1. Both compounds did not exhibit cytotoxicity against vero cells.
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