Chemical constituents of caulis Marsdeniae tenocissimae / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the chemical constitutes of caulis Marsdeniae tenocissimae.</p><p><b>METHOD</b>70% ethanol extracts of caulis M. tenocissimae were isolated and purified by silica gel column chromatography, Sephadex LH-20 chromatography and semi-preparative reversed phase liquid chromatography (RPLC). The compounds were identified on the basis of spectral analysis, including NMR, MS and IR.</p><p><b>RESULT</b>Seven compounds were obtained and identified and their structures were identified as beta-sitosterol (1), condutirol(2), dihydroconduritol(3), betulinic acid(4), lupeol(5), daucosterol(6), 11alpha-O-(2-methylbutyryl)-12beta-O-acetyltenacigeninB(7).</p><p><b>CONCLUSION</b>Compound 4, 5 were isolated from the genus for the first time.</p>