Studies on the Blue Pigments Produced from Genipin and Methylamine. I. Structures of the Brownish-Red Pigments, Intermediates Leading to the Blue Pigments

Autor: H. Inouye, M. Yatsuzuka, IKuo Kawamura, Yoshio Takeda, T. Shingu, Takeshi Ikumoto, T. Yokoi, Ryousuke Touyama, Kenichiro Inoue
Rok vydání: 1994
Předmět:
Zdroj: Chemical and Pharmaceutical Bulletin. 42:668-673
ISSN: 1347-5223
0009-2363
Popis: During the course of studies on the blue pigment formation by the reaction of genipin with methylamine, nine red to brownish-red intermediary pigments were obtained under conditions excluding oxygen. They were identified as monomer, dimer, trimer and tetramer of 2-methyl-4-carbomethoxy-2-pyrindine derivatives on the basis of spectroscopic evidence.
Databáze: OpenAIRE