Table 3.
Influence of Charge Protocol on Conformational Relative Energies (Erel) Computed with GLYCAM06 for the α- and β-Anomers of D-GlcpOMe and D-GalpOMe.
Erel
|
|||||
---|---|---|---|---|---|
Charge protocol
|
|||||
Glycoside conformation (D-GlcpOMe) | (HF/6-31G*//HF/6-31G*)a | EA-RESPb <overall> |
EA-RESPc <α, β> |
EA-RESPd <α>, <β> |
|
α1 |
![]() |
0.00e | 0.00e | 0.00e | 4.45e |
α2 |
![]() |
0.11 | 0.69 | 0.58 | 4.97 |
α3 |
![]() |
0.00 | 0.22 | 0.26 | 4.56 |
β1 |
![]() |
1.30 | 1.12 | 1.29 | 0.00 |
β2 |
![]() |
1.23 | 1.67 | 1.75 | 0.5z |
β3 |
![]() |
1.46 | 1.24 | 1.44 | 0.29 |
α1 |
![]() |
1.62 | 1.76 | 1.89 | 13.65 |
α2 |
![]() |
1.18 | 0.94 | 0.82 | 12.86 |
α3 |
![]() |
0.00 | 0.00 | 0.00 | 11.71 |
β1 |
![]() |
3.24 | 3.18 | 3.42 | 1.93 |
β2 |
![]() |
2.90 | 2.99 | 2.65 | 0.77 |
β3 |
![]() |
1.88 | 1.79 | 1.58 | 0.00 |
Relative energies taken from Ref. 61. Dotted lines indicate hydrogen bonds.
Charges computed by averaging the EA charges of: the α- and β-anomers of all glycosides.
Charges computed by averaging the EA charges of: the α- and β-anomers of each glycoside.
Charges computed by averaging the EA charges of: each anomer on each glycan.
Relative to the lowest energy conformation for each glycoside. Units are kcal/mol.