[Studies on the chemical constituents of Phlomis younghusbandii].

Objective: To study the chemical constituents of Phlomis younghusbandii.

Methods: Compounds were isolated from the ethanolic extract by silica gel column chromatography, and their structures were identified by physical and chemical evidences and spectral methods.

Results: Eight compounds were isolated and identified respectively as 8-acetylshanzhiside methyl ester (1), shanzhiside methyl ester (2), phlomiol (3), 2-butoxy-2-(hydroxymthyl) tetrahydro-2H-3,4,5-pyrantriol (4), sesamoside (5), pulchelloside-I (6), luteolin-7-O-beta-D-glucopyranoside (7) and daucosterol (8).

Conclusion: All the compounds were isolated from the plant for the first time.