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Introduction: Ampelopsis cantoniensis is called "Che day" in Vietnam and has been used as a traditional treatment for inflammatory diseases. Methods: Plant material and hydroalcoholic extract were processed and analyzed for their physicochemical characteristics. A method using HPLC was validated to quantify ampelopsin. Hydroalcoholic extract was spray dried and the powder obtained was characterized in terms of its physicochemical parameters and potential for antiulcerogenic activity. Results: The analytical method proved to be selective, linear, accurate, sensitive. A. cantoniensiss pray dried extract (ACP) was obtained using colloidal silicon dioxide as adjuvant and was shown to possess 25.94 % ampelopsisn. It showed significant antiulcer activity in a model of an indomethacin-induced gastric lesion in rats and also produced a gastroprotective effect. [ABSTRACT FROM AUTHOR]

Background: The medicinal plants consider as a rich resource of ingredients which can be used in drug development and synthesis. Blumea lacera (Burm. f.) DC. is generally used in traditional medicine for the treatment of cough, bronchitis, dysentery, wound healing. The aim of this study is to isolate and identify the compounds from the aerial parts of Blumea lacera. Methods: The aerial parts of B. lacera were dried, powdered and extracted using EtOH, and the concentrated extract was partitioned in succession with n-hexane, CH2 Cl2, and EtOAc. From the EtOAc fraction, the compounds were isolated through column chromatography and their chemical structures were elucidated by NMR spectroscopy and confirmed by comparison of their NMR data with literature data. Results: Repeated column chromatography of the EtOAc-soluble fraction from the aerial parts of B. lacera resulted in the isolation of β-sitosterol (1), campesterol (2), artemetin (3) and acid paracatechuic (4). [ABSTRACT FROM AUTHOR]

Introduction: Caesalpinia sappan L., a traditional ingredient of food and beverages in South East Asia, was investigated for its chemical constituents. Methods: The compounds were isolated by column chromatography and their chemical structures were elucidated by NMR spectroscopy and confirmed by comparison of their NMR data with literature data. Results: Repeated column chromatography of the EtOAc-soluble fraction from the heartwood of C. sappan resulted in the isolation of sappanchalcone (1), caesalpiniaphenol G (2), and quercetin (3). Conclusion: Three phenolic compounds have been successfully isolated from C. sappan. [ABSTRACT FROM AUTHOR]