Investigations on Hoya species, II. Latex Lipids and Leaf Phenolics of Hoy a bella Hook *
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چکیده
In Hoya bella latex a number of triterpenols were found, both in the free form and as esters. The main triterpenols were /?-amyrin, cycloartenol, lupeol and the rarely occurring isobauerenol; esters of these alcohols which included cinnamic acid, propionic acid and isovaleric acid were identified. A homologous series of alkanes with carbon chain length ranging from C-20 to C-31 was found. In leaf extracts acylated flavonol glycosides as well as free ferulic acid occurred; the concentration of the latter decreased with increasing leaf age.
منابع مشابه
Investigations on Hoya Species . III . Leaf Phenolics and Latex Lipids of Hoya lacunosa Bl . *
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