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Melibiose is a disaccharide used for chemical communication between various insects. Deduce the structure of melibiose from the following information.
a. Acid hydrolysis of melibiose yields and equal mixture of D-galactose and D-glucose.
b. Melibiose is hydrolyzed by -galactodase enzymes, but not by - galactodase enzymes. A galactodase enzyme hydrolizes an -glycosidic bond of D-galactose specifically.
c. Melibiose is a reducing sugar and reacts with sodium borohydride.
d. Methylation of melibiose followed by hydrolysis of the glycosidic bonds yields the two derivatives shown below.
a. Acid hydrolysis of melibiose yields and equal mixture of D-galactose and D-glucose.
b. Melibiose is hydrolyzed by -galactodase enzymes, but not by - galactodase enzymes. A galactodase enzyme hydrolizes an -glycosidic bond of D-galactose specifically.
c. Melibiose is a reducing sugar and reacts with sodium borohydride.
d. Methylation of melibiose followed by hydrolysis of the glycosidic bonds yields the two derivatives shown below.