Two benzoyl esters, benzyl 2,6-dimethoxybenzoate (1), benzyl 2,5-dihydroxybenzoate (2), together with three flavones, 5-hydroxy-3,4’,7-trimethoxyflavone (3), 3,5-dihydroxy-4’,7-dimethoxyflavone (4) and 5,6-dihydroxy-3,4’,7-trimethoxyflavone (5), were isolated from the ethyl acetate extract of Polyalthia parviflora leaves. Their structures were elucidated on the basis of spectroscopic analysis and comparisons with related known compounds.
Minh Hang, N. T., Tu Oanh, N. T., Hue, C. T., Tung, T. H., Thoa, H. T., Thanh, L. N., … Minh, C. V. (2015). Benzoyl esters and flavones from the leaves of Polyalthia parviflora. Vietnam Journal of Chemistry, 53(2e), 61–64. https://doi.org/10.15625/0866-7144.2015-2e-014