コンボルブリノール酸及び其関連化合物の構造について

抄録

The structure of convolvulinolic acid, the aglycone of convolvulin, the glycoside of Jalap resin, was synthetically denied by Davies and Adams as to 11-hydroxypentadecanoic acid proposed by Asahina and Akasu. Since the melting point of convolvulinolic acid and that of 3-desoxyipurolic acid were the same, and their mixed fusion gave no depression of the melting point, the author derived keto acid, semicarbazone and dl-hydroxy acid from both convolvulinolic and 3-desoxyipurolic acid. On the other hand, the same derivatives of 11-hydroxypentadecanoic and 11-hydroxymyristic acids were also synthesized by means different from that of Davies and Adams. By comparison and mixed fusion of these derivatives, it was found that convolvulinolic and 3-desoxyipurolic acids were identical, both being 11-hydroxymyristic acid. By the same method, jalap inolic acid, obtained from Scammony resin, was synthetically proved to be 11-hydroxypalmitic acid.