1 D1K 3-(beta-D-glucopyranosyl)-6-propylfuro[2,3-D]pyrimidin-2(3h)-one 1.000 2 D1I 3-(beta-D-glucopyranosyl)-6-pentylfuro[2,3-D]pyrimidin-2(3h)-one 0.923 3 C3B 4-amino-1-beta-D-glucopyranosylpyrimidin-2(1h)-one 0.720 4 CJB 1-beta-D-glucopyranosylpyrimidine-2,4(1h,3h)-dione 0.720