川骨成分の研究 (第2報)

抄録

Kotake et al. have previously applied exhaustive methylation to desoxynupharidine (Proc. Imp. Acad. (Tokyo) 19, 490) in a different way from the authors. The authors attempted to trace the process as described by Kotake, which runs as follows:
By oxidizing (A) with ozone were formed formic acid, acetic acid, isovaleric acid, succinic acid and an acid substance whose semicarbazone melted at 99-102°.
Kotake et al. reported to have obtained by the oxida-tion of Kawahomin (A) n-Valeric acid, β hydroxypropionic acid and a Substance corresponding to Kawahonic acid. They were not obtained, however, by the authors. the discrepancy may be ascribable to the difference in the conditions under which C₁₅H₂₄O was Oxydized with Ozone.