In dilute acid, the glycosidic bond of Nucleoside undergoes hydrolysis to give a pentose and a heterocyclic amine base. The mechanism of the hydrolysis of the Nucleoside has to be given. Concept Introduction: The Nucleoside is the component of the Nucleic acids. It contains a Nitrogen base and Sugar molecule (pentose sugar) which are linked together by N-glycosidic bond. The nitrogen bases are Adenine, Guanine, Cytosine and Thymine (or) Uracil. The sugar molecule is D-ribose sugar in RNA and 2-deoxy-D-ribose sugar in DNA molecule. Nucleoside = Nitrogen base + Sugar molecule

Question

Researchers analysed a glycopeptide (a peptide carrying one or several oligosaccharide groups) and determined both the sequence of the peptide and the sequence of the sugar molecule. The latter was identified as a diholoside coupled to the peptide by an osidic bond. The systematic name of this sugar is: B-D-glucopyranosyl-(1→4)-ß-D-galactopyranose. : Represent the chemical formula of this diholoside in a way that all oses are Question 1 represented according to the Haworth convention. Apart from the furane and/or pyrane cycles all atoms of this molecule must be given.

Answer 1

Question

Chapter 28, Problem 28.10P

Interpretation Introduction

Interpretation:

In dilute acid, the glycosidic bond of Nucleoside undergoes hydrolysis to give a pentose and a heterocyclic amine base. The mechanism of the hydrolysis of the Nucleoside has to be given.

Concept Introduction:

The Nucleoside is the component of the Nucleic acids. It contains a Nitrogen base and Sugar molecule (pentose sugar) which are linked together by N-glycosidic bond. The nitrogen bases are Adenine, Guanine, Cytosine and Thymine (or) Uracil. The sugar molecule is D-ribose sugar in RNA and 2-deoxy-D-ribose sugar in DNA molecule.

Nucleoside = Nitrogen base + Sugar molecule

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