 0  5  10  15  20  25 Glc Gal Man All Tal Gul Alt Ido G (kJ/mol) -D-pyranosides  0  5  10  15  20  25 G (kJ/mol) -D-pyranosides FIG. 5: Inverted chair free energy difference for the β (upper panel) and α (lower panel) series of aldopyranoses. The three curves refer to the simulation results obtained using the 45a4 parameter set (squares) and the predictions of Ref. 62 (triangles) and Ref. 63 (circles). Lines are a guide to the eye, and error bars are always smaller than the symbols (0.5 kJ/mol). 37