[Isolation and identification of alkaloids from Armeniaca mume Sieb].

To study the alkaloids from Armeniaca mume Sieb. The alkaloids were extracted with chloroform from 80% alcoholic extract and concentrated. Then they were transferred into aqueous solution and absorbed by macroporous cation exchange resin. The concentrated total eluent was extracted with chloroform. The alkaloids were purified by recrystallization with petroleum ether and sublimation. Then they were determined by Fourier Transform Infrared spectroscopy, Mass spectrometry and Nuclear magnetic resonance etc methods. Two alkaloids were separated and their structures were elucidated as 2,2,6,6-tetramethyl-4-piperidone and tert-butylurea on the basis of spectral evidence. They are new alkaloids from A. mume.