Depicting Carbohydrate Stereochemistry: Fischer Projections Rules for manipulating Fischer projections: A Fischer projection can be rotated on the page by 180°，but not by90°or270° Only a 180 rotation maintains the Fischer convention by keeping the same substituent groups going into and coming out of the plane 180° CHO CH2OH H OH same as HO -H CH2OH CHO (R)-Glyceraldehyde (R)-GlyceraldehydeRules for manipulating Fischer projections: ▪ A Fischer projection can be rotated on the page by 180°, but not by 90° or 270° ▪ Only a 180° rotation maintains the Fischer convention by keeping the same substituent groups going into and coming out of the plane Depicting Carbohydrate Stereochemistry: Fischer Projections