Two new alkaloid galactosides from the kernel of Prinsepia uniflora.
Two new alkaloid galactosides have been isolated from the kernel of Prinsepia uniflora. Their structures were elucidated as 5-[(α-D-galactopyranosyloxy) methyl]-1H-pyrrole-2-carbaldehyde (1) and 6-[(α-D-galactopyranosyloxy) methyl]-3-pyridinol (2) by various spectroscopic means including HR-ESI-MS, IR, 1D and 2D NMR. The determined structures were characterized with a unit of galactose which is rarely seen in the previously isolated pyrrole and pyridinol compounds.
Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, PR China.
Haiyan
H
Zhou
Runhuai
R
Zhao
Junshan
J
Yang
D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D005697:Galactosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry; D011728:Pyridones / Q000737:chemistry / Q000302:isolation & purification*; D027824:Rosaceae / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization
C586228:5-((alpha-D-galactopyranosyloxy)methyl)-1H-pyrrole-2-carbaldehyde; C586291:6-((alpha-D-galactopyranosyloxy)methyl)-3-pyridinol; D000470:Alkaloids; D005697:Galactosides; D011728:Pyridones