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  1. No Access

    Article

    Derivatives of unsaturated aromatic alcohols in propolis and styrax benzoin

    The benzoate of trans-coniferyl alcohol and the benzoate of trans-p-coumaryl alcohol have been obtained from propolis and the styrax benzoin, this being the first time that the latter has been described.

    S. A. Popravko, I. V. Sokolov, I. V. Torgov in Chemistry of Natural Compounds (1984)

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    Article

    New natural phenolic triglycerides

    The composition of the phenolic triglycerides isolated from ethanolic extracts of propolis, aspen buds, and wheat roots has been investigated. Two new phenolic triglycerides have been identified: 2-acetyl-1,3-...

    S. A. Popravko, I. V. Sokolov, I. V. Torgov in Chemistry of Natural Compounds (1982)

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    Article

    Identification of 2′,7-dihydroxy-4′-methoxyisoflavan (vestitol) in the roots of Alsike clover

    P. D. Fraishtat, S. A. Popravko in Chemistry of Natural Compounds (1979)

  4. No Access

    Article

    Growth inhibitors in buds of Betula verrucosa

    S. A. Popravko, G. P. Kononenko… in Bulletin of the Academy of Sciences of the… (1974)

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    Article

    Flavonoid components of propolis

    The following flavonoids have been isolated from propolis and identified: acacetin (I), 7,4′-dimethoxyflavone (II), kaempferide (III), rhamnocitrin (IV), 5,7-dihydroxy-3,4′-dihydroxyflavone (V), 3,5-dihydroxy-...

    S. A. Popravko, A. I. Gurevich, M. N. Kolosov in Chemistry of Natural Compounds (1969)