Chapter 23, Problem 23.53SP

(a)

Interpretation Introduction

Interpretation:

The structure of methyl $\beta$-D-glucopyranoside is to be drawn.

Concept introduction:

Methyl $\beta$-D-glucopyranoside has molecular formula ${\text{C}}_{\text{7}}{\text{H}}_{\text{14}}{\text{O}}_{\text{6}}$. A cyclic acetal form of sugar is known as glycoside. It is a non reducing sugar. Glycosides are generally furanosides or pyranosides.

(b)

Interpretation Introduction

Interpretation:

The structure of $2,3,4,6$ tetra-$O$-methyl-D-mannopyranose is to be drawn.

Concept introduction

The molecular formula of $2,3,4,6$ tetra-$O$-methyl-D-mannopyranose is ${\text{C}}_{10}{\text{H}}_{20}{\text{O}}_{\text{6}}$. Four ${\text{OCH}}_{\text{3}}$ groups are present in structure of $2,3,4,6$ tetra-$O$-methyl-D-mannopyranose.

Pyranose is a six membered cyclic hemiacetal form of sugar.

(c)

Interpretation Introduction

Interpretation:

The structure of $1,3,6$ tri-$O$-methyl-D-fructofuranose is to be drawn.

Concept introduction:

Furanose is a five membered cyclic hemiacetal form of a sugar. It consists of four carbon atoms and one oxygen atoms. Furanose rings have alpha and beta configuration.

(d)

Interpretation Introduction

Interpretation:

The structure of $2,3,4,6$ tetra-$O$-methyl-$\beta$-D-glactopyranoside is to be drawn.

Concept introduction:

Pyranoside is a six membered glycoside. A cyclic acetal form of sugar is known as glycoside. It is a non reducing sugar. Glycosides are generally furanosides or pyranosides.