Abstract
To study the chemical composition of the extract of cedar pine needle methylene chloride. Methods: The paper used silica gel and Sephadex LH-20 column chromatography to separate and purify, and carried out structural identification based on physical and chemical properties and spectral data. At the same time, gallic acid was preliminarily separated by high-performance liquid chromatography (HPLC), the separation conditions of gallic acid were determined, and the content change of gallic acid after tannin was acid-decomposed was determined, proving that the extract may contain decomposable hydrolysis Tannin or compound tannin. Results: Five compounds were isolated from the dichloromethane extract of cedar pine needles, which were identified as: ferulic acid (1), osthol (2), β-phenylacrylic acid (3), paeonol (4), Magnolol (5). Conclusion: All compounds except Compound 5 were isolated from this plant for the first time.
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