Comparison of the six membered α-cyclodextrin, α-cyclomannin, α-cycloaltrin, and α-cyclogalactin; all PIMM91 (except cycloaltrin: CHARMM).

α-Cyclodextrin cyclo[D-Glcp α(1→4)]6
mlp1	mlp2	mlp3	mlp4	mlp5	mlp6
α-Cyclomannin cyclo[D-Manp α(1→4)]6
mlp1	mlp2	mlp3	mlp4	mlp5	mlp6
α-Cycloaltrin cyclo[D-Altp α(1→4)]6
mlp1	mlp2	mlp3	mlp4	mlp5	mlp6
α-Cyclogalactin cyclo[D-Galp β(1→4)]6
mlp1	mlp2	mlp3	mlp4	mlp5	mlp6

Image Notes
mlp1	View on the 2-OH/3-OH (left) and 6-CH2OH side (right) of the torus; models were rotated bye 180 deg. around a vertical axis. The same scale was applied for all compounds.
mlp2	Orientation according to pictures mlp1, half opened models
mlp3	View on the 2-OH/3-OH side in closed and bisected form each.
mlp4	View on the 6-CH2OH side in closed and bisected form each.
mlp5,6	Side view models with all 2-OH and 3-OH groups pointing up, and the 6-CH2OH groups pointing down, in closed and bisected form each.

For details see:

Molecular Modeling of Saccharides, Part IV. Cyclodextrins, Cyclomannins, and Cyclogalactins with five and six (1→4)-linked Sugar Units: a Comparative Assessment of their Conformations and Hydrophobicity Potential Profiles. F. W. Lichtenthaler and S. Immel, Tetrahedron: Asymmetry 1994, 5, 2045-2060.
Abstract

The cyclodextrins with five (left side each) and six glucose units (right side) are compared to cyclomannins, cycloaltrins, and cyclogalactins of the same ring size.

Cyclodextrins cyclo[D-Glcp α(1→4)]n with n = 5,6 (PIMM91-Structures)
sld	mlp1	mlp2	mlp3	mlp4	mlp5	mlp6
Cyclomannins cyclo[D-Manp α(1→4)]n with n = 5,6 (PIMM91-Structures)
sld	mlp1	mlp2	mlp3	mlp4	mlp5	mlp6
Cycloaltrins cyclo[D-Altp α(1→4)]n with n = 5,6 (CHARMM-Structures)
sld	mlp1	mlp2	mlp3	mlp4	mlp5	mlp6
Cyclogalactins cyclo[D-Galp β(1→4)]n with n = 5,6 (PIMM91-Structures)
sld	mlp1	mlp2	mlp3	mlp4	mlp5	mlp6

Image Notes
sld	Dreiding models and molecular Surfaces in dotted form
mlp1	View on the 2-OH and 3-OH side of the torus
mlp2	View on the 2-OH and 3-OH side, half opened models
mlp3	View on the 6-CH2OH side
mlp4	View on the 6-CH2OH side, half opened models
mlp5	Side view models with all 2-OH and 3-OH groups pointing up, and the 6-CH2OH groups pointing down
mlp6	View as in "mlp5", with a different depth of slice through the surface

Cycloaltrins
sld	mlp1	mlp2	mlp3	mlp4	mlp5	mlp6

Image Notes
all	Cycloaltrins, but note that the pictures 1 and 4 are rotated around a horizontal axis rather than a vertical one when compared to 2 and 3.

For details see:

Molecular Modeling of Saccharides, Part IV. Cyclodextrins, Cyclomannins, and Cyclogalactins with five and six (1→4)-linked Sugar Units: a Comparative Assessment of their Conformations and Hydrophobicity Potential Profiles. F. W. Lichtenthaler and S. Immel, Tetrahedron: Asymmetry 1994, 5, 2045-2060.
Abstract