Elucidation of the substitution pattern of 9,10-anthraquinones through the chemical shifts of peri-hydroxyl protons.

Jan Schripsema, Denise Danigno

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    In 9,10-anthraquinones the chemical shift of a peri-hydroxyl proton is affected by the substituents in the other benzenoid ring. These effects are additive. They are useful for the determination of substitution patterns and have been used to revise the structures of six previously reported anthraquinones containing methoxyl, hydroxyl, methylenedioxy and beta-methyl substituents. Because the chemical shifts of the other protons are hardly affected by substitutions in the other ring, the characteristic chemical shifts for a wide variety of substitution patterns could be derived.
    Original languageEnglish
    JournalPhytochemistry
    Volume42
    Issue number1
    Pages (from-to)177-184
    ISSN0031-9422
    DOIs
    Publication statusPublished - 1996

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