them, two broad signals [δH 6.01 (1H, br s) and δH 5.58 (2H, br s)] were assigned to the glucose-1 H-1, and the glucose-2 H-1 and H-2 overlapped with each other on the basis of HSQC correlations. Although the intensity of the 2D cross-peaks for these broad proton signals was low, the larger accumulation of the HSQC data of good- purity tannin permitted their observation. Despite the broadening of the anomeric proton signals, the 4C1 conformations of the glucose cores were assigned on the basis of the coupling constants of the remaining proton signals (Table 1). The 13C NMR spectrum of 10 showed carbon signals (Tables 2 and 4) consistent with the presence of the galloyl groups and glucose cores. Among the ester carbonyl