金銀花の成分に就いて (第2報)
1949 年 69 巻 6-10 号 p. 320-321
詳細
1949 年 69 巻 6-10 号 p. 320-321
The dried flowers of Lonicera japonica Thumb. are used as a diuretic. The author previously reported isolation of waxy substance as one of its components and named it lonicera wax. As other componets, the author recently obtained yellow needles, m.p. 325°, and colorless prisms, m.p. 225°. The former corresponds to C15H10O6. 1 1/2H2O, gives acetylated compound of white needles, m.p. 214-5°, and methylated compound of yellow needles, m.p. 161-3°, by diazomethane. These compounds showed no depression in m.p.s when fused respectively with luteolin, tetraacetyl-luteolin and trimethylluteolin. Colorless prisms corresponds to C6H12O6. 2H2O and is identical with i-inositol.
