[A new steroidal alkaloid from the bulbus of Fritillaria wabuensia].
OBJECTIVE
To investigate the chemical constituents of the bulbs of Fritillaria wabuensia.


METHODS
Chromatography techniques were used to isolate the chemical constituents. EI-MS, 1HNMR, 13 CNMR and DEPT were used to determine the structures of the isolated constituents.


RESULTS
Three alkaloids were isolated from the bulbs of Fritillaria wabuensia, and were identified as imperialine (I), imperialine-beta-N-oxside (II), isoverticine-beta-N-oxide (III).


CONCLUSIONS
Isoverticine-beta-N-oxide was isolated from the bulbs of Fritillaria wabuensia for the first time. Isoverticine-beta-N-oxide is a new alkaloid.
Chen
Qian
Q
West China School of Pharmaceutical Science, Si Chuan University, Chengdu 610041, China.
Zhu
Li-hua
LH
Xu
Yun-feng
YF
Fan
Ju-zheng
JZ
D002595:Cevanes / Q000737:chemistry / Q000302:isolation & purification; D003497:Cyclic N-Oxides / Q000737:chemistry / Q000302:isolation & purification*; D031410:Fritillaria / Q000737:chemistry*; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
D002595:Cevanes; D003497:Cyclic N-Oxides; D014315:Triterpenes; C493341:isoverticine N-oxide; C047331:peiminine