Chemical constituents from stems of Yao medicine Zhongliuteng (cane of Pileostegia tomentella) / 中草药

ABSTRACT

Objective: To study the chemical constituents of Yao medicine Zhongliuteng, the canes of Pileostegia tomentella. Methods: The chemical constituents were isolated and purified by silica gel chromatography repeatedly from the canes of P. tomentella and their structures were identified by spectral analysis and chemical methods. Results: Sixteen compounds were isolated from the canes of P. tomentella and their structures were identified as loganic acid (1), 4-O-α-L-arabinofuranosyl-(1→6)-β-D-glucopyranoside (4S)-4-hydroxyl-β-ionone (2), resorcinol (3), daphnin (4), skimmin (5), umbelliferone (6), vogeloside (7), diethyl phthalate (8), secologanin (9), secologanin dimethyl acetal (10), sweroside (11), foliasalacioside B (12), benzyl-O-β-D-apiofuranosyl-(1″→6')-β-D-glucopyranoside (13), maltose (14), glucose (15), and daucosterol (16). Conclusion: All compounds are obtained from the plant for the first time, and all compounds are also obtained from the plants of Pileostegia Hook. f. et Thoms. for the first time except compounds 5, 6 and 16.