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  • Title: [Studies on chemical constituents in leaf of Isatis indigotica].
    Author: Ruan JL, Zou JH, Cai YL.
    Journal: Zhongguo Zhong Yao Za Zhi; 2005 Oct; 30(19):1525-6. PubMed ID: 16335825.
    Abstract:
    OBJECTIVE: To study the chemical constituents of the leaf of Isatis indigotica. METHOD: Chromatography and spectral analysis were respectively used to isolate and identify the constituents. RESULT: Three compounds were isolated from the ethanol extracts of theleaf of I. indigotica, and identified as indirubin, tryptanthrin and L-pyroglutamic acid. CONCLUSION: 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.
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