Pyranoid Cyclogalactins cyclo[D-Galp β(1→4)]_n with n = 5,6, and
Furanoid Cyclogalactins cyclo[D-Galf β(1→3)]_n with n = 4,5 and cyclo[D-Galf β(1→6)]_n with n = 3,4 (all PIMM91 Structures).

Cyclogalactins with five and six units (PIMM91 structures)
sld	mlp1	mlp2	mlp3	mlp4	mlp5	mlp6
β-Cyclogalactin (PIMM91 structure)
	mlp1	mlp2	mlp3	mlp4	mlp5	mlp6

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

cyclo[D-Galf β(1→3)]n with n = 4,5					cyclo[D-Galf β(1→6)]n with n = 3,4
mlp1	mlp2	mlp3	mlp5	mlp6	mlp1	mlp2	mlp3	mlp5	mlp6
mep1	mep2	mep3	mep5	mep6	mep1	mep2	mep3	mep5	mep6
mlp					mlp
Strain energies (bond angles and torsions)
strain	strain				strain	strain
					cyclo[D-Galf β(1→6)]n with n = 3-5
					mlp1	mlp2	mlp3	mlp5	mlp6
					mep1	mep2	mep3	mep5	mep6

For details see:

Molecular Modeling of Saccharides, Part XXII. Conformations and Lipophilicity Profiles of some Cyclic β(1→3)- and β(1→6)-linked Oligogalactofuranosides. H. Gohlke, S. Immel, and F. W. Lichtenthaler, Carbohydr. Res. 1999, 321, 96-104.
Abstract / Fulltext PDF