YAKUGAKU ZASSHI
Online ISSN : 1347-5231
Print ISSN : 0031-6903
ISSN-L : 0031-6903
炭水化物系化合物の自動酸化分解(第14報) : アスコルビン酸の褐変分解 その3
小沢 樹夫中村 好志木苗 直秀
著者情報
ジャーナル フリー

1976 年 96 巻 7 号 p. 932-935

詳細
抄録

The four pigments of isatin derivatives were separated from the browinng reaction of L-ascorbic acid (AAH2) with p-toluidine. These colors were identified as 2, 3-di-(p-tolylimino)-5-methylindoline (I) (reddish brown), 2-deoxy-2-(p-tolylimino)-5, 5'-dimethyl-isoindigo (II) (reddish orange), 5, 5'-dimethylindirubin (III) (violet), and 3-deoxy-3-(p-tolylimino)-5, 5'-dimethylindirubin (IV) (violet), which were found to be formed by the reaction of glucose and p-toluidine. The formation pathway of these pigments is different from those produced by the glucose-p-toluidine reaction, that is, the reaction of 14C1-AAH2, 5, 6-isopropylidene-AAH2, 5-phenyl-2, 3, 4 (5) furantrione, glycolaldehyde, and triose reductone with p-toluidine suggested that they are not formed from C1-C2 fragment of AAH2, but formed from its C5-C6 fragment.

著者関連情報
© by the PHARMACEUTICAL SOCIETY OF JAPAN
前の記事 次の記事
feedback
Top