Iridoid glycosides from Eremostachys glabra

Abbas Delazar, Maureen Byres, Simon Gibbons, Yashodharan Kumarasamy, Masoud Modarresi, Lutfun Nahar, Mohammad Shoeb, Satyajit D. Sarker

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Reversed-phase preparative HPLC of a methanol extract of the rhizomes of Eremostachys glabra yielded three new iridoid glycosides, namely, 6,9-epi-8-O-acetylshanziside methyl ester (1), 5,9-epi-penstemoside (2), and 5,9-epi-7,8-didehydropenstemoside (3). Their structures were elucidated on the basis of spectroscopic data interpretation. The free-radical scavenging activity of these compounds was assessed using the DPPH assay.
Original languageEnglish
Pages (from-to)1584-1587
Number of pages4
JournalJournal of Natural Products
Issue number9
Publication statusPublished - 1 Sep 2004

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