“…Thus, as the result we obtained 5-cholestane-3,6-diol (3,6-coprostanediol, 3), 5-cholestane-3,6-diol (3,6coprostanediol, 4), cholest-4-ene-3,6-diol (5), cholest-4-ene-3,6-diol (6), and 5-cholestane-3,6-diol (7). Although these steroid diols have been reported many years ago [6][7][8][9], little or no NMR and MS characterization of these compounds were presented in literature. So we assigned all proton and carbon signals of 3-7 using 2D NMR experiments, including 1 H-1 H COSY, HSQC, HMBC, and ROESY (see Supplementary Materials).…”