Studies on Monoterpene Glucosides. VIII. Artefacts formed during Extraction of Asperuloside and Paederoside
1969 年 17 巻 9 号 p. 1949-1954
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1969 年 17 巻 9 号 p. 1949-1954
Prolonged boiling of an aqueous solution of asperuloside (I) afforded scandoside (III), deacetylasperuloside (V), deacetylasperulosidic acid (IX), 10-acetylascandoside (X), and asperulosidic acid (XI). A methanolic solution of I gave deacetylasperuloside (V) and daphylloside (XII) on the same treatment. Prolonged boiling of an aqueous solution of paederoside (II) gave paederosidic acid (IV) and 6-epipaederosidic acid (XIII). Deacetylasperuloside (V) and paederosidic acid methyl ester (VI) were obtained by boiling a methanolic solution of II.
