Iridoid glucosides from Penstemon secundiflorus and P. grandiflorus: Revised structure of 10-hydroxy-8-epihastatoside

Henrik Franzyk, Søren Rosendal Jensen, Frank F. Stermitz

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Thorough large scale investigations of Penstemon secundiflorus ssp. lavendulus and of P. grandiflorus resulted in the isolation of the new iridoid glucosides 5, 6 beta-dihydroxyadoxoside. The structure of 10-hydroxyepihastatoside has been revised to 10-hydroxyhastatoside: using a chemical correlation. Also, the known iridoids (5 alpha H)-6-epidihydrocornin, cornin, hastatoside, 8-epihastatoside, beta-dihydrohastatoside, penstemoside, (5 alpha H)-10-hydroxy-6-epidihydrocornin, 10-hydroxycornin and catalpol were isolated. (C) 1998 Elsevier Science Ltd. All rights reserved.
    Original languageEnglish
    JournalPhytochemistry
    Volume49
    Issue number7
    Pages (from-to)2025-2030
    ISSN0031-9422
    DOIs
    Publication statusPublished - 1998

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