3,4,5-Tri-O-galloyl- 14 and 1,3,4,5-tetra-O-galloyl quinic acid 28 were isolated and characterized, beside arbutin 27 and 2″,3″-di-O-galloyl-arbutin 11. Furthermore, the depside 2-O-(3,4-dihydroxybenzoyl)-2,4,6-trihydroxyphenylacetic acid 5, 1,2,3,4,6-penta-O-galloyl-β-d-glucose 22 and seven ellagitannins were found: 1,2-di-O-galloyl-(4,6-(S)-hexahydroxydiphenoyl)-β-d-glucose 20, 1,3-di-O-galloyl-(4,6-(S)-hexahydroxydiphenoyl)-β-d-glucose 21, 2,3-di-O-galloyl-(4,6-(S)-hexahydroxydiphenoyl)-β-d-glucose (tellimagrandin-I) 19, 1,2,3-tri-O-galloyl-(4,6-O-hexahydroxydiphenoyl)-β-d-glucose (tellimagrandin-II) 23, and two so far not described dimers of tellimagrandin-I and -II (myrodigamin-I and -II, 24, 25).
The presence of trehalose (3.3%), raffinose (0.2%) and stachiose (0.2%) beside a fructan (2.1%) was determined. Two ICH2-validated UHPLC methods have been developed and used within batch analysis for unambiguous identification of the herbal material and quantification of the major compounds myrodigamin-I (0.9 to 1.7%), tellimagrandin-II (0.3 to, 0.9%) and 3,4,5-tri-O-galloyl quinic acid (0.1 to 0.7%), besides kaempferol (0.1 to 0.3%) and quercetin content (0.2 to 0.3%) after hydrolysis of the respective glycosides.