Anti-tumor effect of iridoid glucosides from Boschniakia rossica in H22-bearing mice Two iridoid glycoside from roots of Phlomis medicinalis Quantitative analysis of two major secoiridoid glucosides in fruits of Ligustrum lucidum Studies on chemical constituents in root of Phlomis medicinalis Anti-tumor effect of iridoid glucosides from Boschniakia rossica in H22-bearing mice