Carbohydrate configurations I want to study several carbohydrates that includes but not limited to the following molecules:


Glucose
Galactose
Mannose
Fructose
Tagatose
Sorbose


I know that for any carbohydrate, possible list of carbohydrates isomers are 


single chain (L and D isomer)
$\alpha$ and $\beta$ pyranose or six member ring structures
$\alpha$ and $\beta$ furanose or five member ring structures.


Now, for ring structures there are several rotamers, mainly gg, gt and tg (g=gauche, t=trans) and also there are several anomers but I am not sure about them. Is there anything I'm missing?

For accurate thorough computational study, I need to identify all the isomers. Is there any single book or document that can guide me to screen the full potential energy surface?

Thanks for your kind help.
There are 32 isomers of C6H12O6, of which you have named 6. The most common one is D-glucose (dextrose). I don't think all of the 16 L-saccharides are found in nature.

α and β refer to the connection between rings, whether the ketal (or aldehyde) oxygen is axial or equatorial.

  Structures made with ChemDraw.