(6R,9R)-9-hydroxymegastigman-4-en-3-one-9-O-β-D-glucopyranoside;(6R,9R)-megastigma-4-en-3-one 9-O-β-glucopyranoside;blumenyl C β-D-glucopyranoside;blumenol C 9-O-β-glucoside;blumenol C O-β-D-glucoside;blumenol C glucoside;Byzantionoside B;(4R)-3,5,5-trimethyl-4-[(3R)-3-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxybutyl]cyclohex-2-en-1-one
The absolute stereochemistry of blumenolC glucoside and byzantionoside B was revised here as (6R,9S)- and (6R,9R)-9-hydroxymegastigman-4-en-3-one 9-O-beta-D-glucopyranosides, respectively, by modified Mosher's method. The empirical rules of (13)C-NMR chemical shift to determine the absolute stereochemistry of C-9 of 9-hydroxymegastigmane 9-O-beta-D-glucopyranoside were also discussed.