“…Light brown crystals (mp 172-175 °C) precipitated from methanol-ether were identified as MH-glucoside tetraacetate based on UV and IR spectra. 4 was prepared by deacetylation of MH-glucoside tetraacetate with methanolic NH3 (Dorough et al, 1974). Deacetylation was quantitative as shown by TLC, and the residue after evaporation at 77 °C in vacuo (mp 184-187 °C) was identified as 4 based on UV and IR: UV (CH3OH) Xmu 303 nm, eM 1912 ±23 (n = 3); IR (KBr, cm"1) vs (3410, 3340, 3240,1595,1070), s (1675,1650,1280, 995), m (1435,1315,1100, 835).…”