Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 19, Problem 19.25P
Interpretation Introduction

(a)

Interpretation:

The β -lactam portion of amoxicillin and cephalexin is to be identified.

Concept Introduction:

The cyclic amides are known as lactums. The four membered ring containing amide group is known as β -lactam. Amoxicillin is a type of penicillin. The common feature in all penicillin is the β -lactam ring is bonded to the five-membered ring containing sulfur atom. Cephalexin is effective β -lactam antibiotic.

Interpretation Introduction

(b)

Interpretation:

The structural formula of the molecule which is formed by the enzyme catalyzed hydrolysis of the β -lactam ring of penicillin G is to be drawn.

Concept Introduction:

The cyclic amides are known as lactums. The four membered ring containing amide group is known as β -lactam. Due to the presence of β -lactam ring the penicillin G shows antibacterial activity.

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