[A new alkaloid from Opuntia vulgaris].
OBJECTIVE
To study the chemical constituents of the stems of Opuntia vulgaris Mill(Cactaceae).


METHODS
The compounds of Opuntia vulgaris were isolated by chromatography of Amberlite Dowex 50 and silica gel, and identified by means of UV, IR, MS, 1D and 2D NMR.


RESULTS
Three compounds were isolated and identified as: opuntin B(I), 4-hydroxyproline(II) and tyrosine(III).


CONCLUSIONS
Compound I is a new alkaloid.
Jiang
Jian-qin
JQ
Department of Phytochemistry, China Pharmaceutical University, Nanjing 210038, China. njjjq@hotmail.com
Ye
Wen-cai
WC
Liu
Yu-hong
YH
Chen
Zhen
Z
Min
Zhi-da
ZD
Lou
Feng-chang
FC
D006909:Hydroxyproline / Q000737:chemistry / Q000302:isolation & purification; D008301:Maleimides / Q000737:chemistry / Q000302:isolation & purification*; D008968:Molecular Conformation; D015394:Molecular Structure; D029747:Opuntia / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D014443:Tyrosine / Q000737:chemistry / Q000302:isolation & purification
D008301:Maleimides; D010636:Phenols; C484706:opuntin B; D014443:Tyrosine; D006909:Hydroxyproline