Anti-piroplasma activity of 2-methylbutane galloyl glycosides from Saxifraga spinulosa

Five new galloyl glucosides of 2-C-methyl-D-erythriol (1–4) and homogentisic acid (5) were isolated from the aerial parts Saxifraga spinulosa. The structures compounds elucidated by spectroscopic methods. absolute configuration was determined using alkaline hydrolysis on their ester bond. parasitic growth inhibitory activities evaluated against Babesia bigemina, B. bovis, caballi, Theileria equi, which cause protozoan diseases livestock, results indicated that presence moiety is important aglycone moieties also affect activities.