Chemical Constituents in the Bark of Juglans regia L. var orientalis KITAMURA (J. orientalis DODE)
- 1 January 1965
- journal article
- Published by Pharmaceutical Society of Japan in YAKUGAKU ZASSHI
- Vol. 85 (6) , 547-550
- https://doi.org/10.1248/yakushi1947.85.6_547
Abstract
Examinations were made on the components of the bark of Juglans regia L. var. orientalis KITAMURA and glucose, meso-inositol, quercetin, and quercitrin (quercetin 3-rhamnoside) were detected. Besides these, l-flavanone was isolated and this was found to be l-sakuranetin, m.p. 151°, [α]D32 -6.24° (EtOH). This gives dark brownish red color with ferric chloride, cherry red with magnesium-hydrochloric acid, and forms an acetate, C16H12O5(COCH3)2, m.p. 104-106°, by acetylation with acetic anhydride and pyridine. Iodine oxidation gave genkwanin (4, 5-dihydroxy-7-methoxyflavone), m.p. 282°.Keywords
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