A new alkaloid from Opuntia vulgaris / 药学学报

<p><b>AIM</b>To study the chemical constituents of the stems of Opuntia vulgaris Mill(Cactaceae).</p><p><b>METHODS</b>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.</p><p><b>RESULTS</b>Three compounds were isolated and identified as: opuntin B(I), 4-hydroxyproline(II) and tyrosine(III).</p><p><b>CONCLUSION</b>Compound I is a new alkaloid.</p>