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Study of the chemical constituents of ethanol extract from the aerial parts of Atalantia buxifolia led to the identification of a new acridone alkaloid named as buxifoliadine (1), along with known compounds citrusinine--I (2), N-methylatalaphylline (3), Severinolid (4) and cycloseverinolide (5). Structural elucidation of compound 1 was carried out by a combination of mass spectrometry and (1)H and (13)C NMR spectroscopy analyses.

Objective: To study the chemical constituents from Melicope ptelefolia., Methods: Several chromatographic methods were applied to isolate and purify compounds. Their structures were identified on the basis of physicochemical properties and spectroscopic data., Results: Seven compounds were isolated and elucidated as n-octadecanyl palmitate (I), beta-sitosterol (II), palmitic acid (III), 3, 5,3'-trihydroxy-8,4'-dimethoxy-7-(3-methylbut-2-enyloxy) flavone (IV), daucosterol (V), salylic acid (VI), kaempferol-3-O-alpha-D-arabinpyranoside (VII)., Conclusion: Compound VII is isolated from the genus for the first time, Compounds V and VI are isolated from Melicope ptelefolia for the first time.

Objective: To study the chemical constituents of Lignum Dalbergiae Odoriferae., Methods: The isolation and purification were carried out by repeated silica gel column chromatography, and the chemical structures were determined by physico-chemical properties and spectral analysis., Results: Nine compounds were isolated and identified as fisetin (1), luteolin (2), genistein (3), isohemiphloin (4), 6-C-glycopyranosyl luteolin (5), homoeriodictyol (6), liquiritigenin (7), daidzein (8) and naringenin (9)., Conclusion: Compounds 1,4,5,6 are isolated from this plant for the first time.