Soil Bacterial Hydrolysis leading to Genuine Aglycone. III. The Structures of Glycosides and Genuine Aglycone of Sanguisorbae Radix

The structures of two glycosides, named ziyu-glycoside I and ziyu-glycoside II, obtained from Sanguisorbae Radix have been established as I and II respectively by virtue of the soil bacterial hydrolysis method. Furthermore, it has been revaled that the genuine aglycone of the glycosides is pomolic acid (XI) and is not tomentosolic acid (III).