Reexamination on the Structure of so-called “Hiviscin”
1969 年 82 巻 974-975 号 p. 341-347
詳細
1969 年 82 巻 974-975 号 p. 341-347
The major pigment, which was formerly isolated from the calyx and bract of roselle (Hibiscus sabdariffa L.) by Yamamoto et al. (1933), was reported to have the structure of delphinidin pentosido-glucoside. It was newly examined and found that it consists of each 1mol of delphinidin (1mol), glucose and xylose. By a series of analytical procedure its structure must be delphinidin 3-xylosido-glucoside. So it was compared with daphniphyllin (delphinidin 3-xylosido-glucoside), which was isolated from the berries of Daphniphyllum macropodum Miq. and it revealed their identity. Hence, the name “hiviscin”. once given to this substance, must be eliminated from the literature.
As minor pigments, a small amount of delphinidin 3-monoglucoside, cyanidin 3-monoglucoside (chrysanthemin) and delphinidin were also isolated in crystalline state from dried calyx and bract.
