Author/Authors :
Takayama، نويسنده , , Hiromitsu and Ishikawa، نويسنده , , Hayato and Kurihara، نويسنده , , Mika and Kitajima، نويسنده , , Mariko and Sakai، نويسنده , , Shin-ichiro and Aimi، نويسنده , , Norio and Seki، نويسنده , , Hiroko and Yamaguchi، نويسنده , , Kentaro and Said، نويسنده , , Ikram M and Houghton، نويسنده , , Peter J، نويسنده ,
Abstract :
The structure of mitragynaline, an indole alkaloid isolated from Malaysian Mitragyna speciosa, was revised as formula 3 by analysis of the NMR spectra measured at low temperature and by chemical transformation with DDQ oxidation from the known alkaloid mitragynine (5).
Keywords :
Alkaloids , NMR , Oxidation , indoles
