Studies on chemical constituents in leaf of Isatis indigotica / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the chemical constituents of the leaf of Isatis indigotica.</p><p><b>METHOD</b>Chromatography and spectral analysis were respectively used to isolate and identify the constituents.</p><p><b>RESULT</b>Three compounds were isolated from the ethanol extracts of theleaf of I. indigotica, and identified as indirubin, tryptanthrin and L-pyroglutamic acid.</p><p><b>CONCLUSION</b>L-pyroglutamic acid was isolated from the genus for the first time, and tryptanthrin was isolated from the leaf of this plant for the first time.</p>