, with the approximate relative yields given in parenthesis. Table lists the specific NMR observations used for the identifications of these transglycosylation products. D-Manp residues termed either A, C, or F above have virtually identical chemical shifts as they have similar chemical environments, although they are each present in two different reaction products (Table ). Many of the 2D resonances from these D-Manp groups show a slight deformation or skewness, indicating the presence of two signals. Distinct cross peaks and/or NOEs were observed from D-Manp residues A, C, and F to their respective adjacent D-Manp residues in the different reaction products (Table ).