General, Organic, and Biological Chemistry - 4th edition
General, Organic, and Biological Chemistry - 4th edition
4th Edition
ISBN: 9781259883989
Author: by Janice Smith
Publisher: McGraw-Hill Education
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Chapter 15, Problem 56P
Interpretation Introduction

(a)

Interpretation:

The specific rotation of the enantiomer of lactose should be determined.

Concept Introduction:

Chiral or optically active molecules can rotate plane-polarized light either clockwise or counter clockwise. If plane-polarized light is rotated clockwise then it is known as dextrorotatory and for counter clockwise rotation it is known as levorotatory.

Interpretation Introduction

(b)

Interpretation:

Boiling point comparison should be done for enantiomers of Taxol.

Concept Introduction:

Physical properties of enantiomers are similar except the direction of optical activity. Solubility, melting point, boiling points are similar in enantiomers.

Interpretation Introduction

(c)

Interpretation:

The solubility of Taxol needs to be compared to its enantiomer.

Concept Introduction:

Physical properties of enantiomers are similar except the direction of optical activity. Solubility, melting point, boiling points are similar in enantiomers.

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Trabectedin, shown in a ball-and-stick model on the cover of this text, is an anticancer drug sold under the trade name Yondelis. a. Locate the stereogenic centers in trabectedin. b.What is the maximum number of stereoisomers possible for trabectedin? c.Draw the enantiomer. d.Draw a diastereomer. e.If the specific rotation of trabectedin is +41.5, what is the [α] of a solution that contains 75% trabectedin and 25% of its enantiomer?f . What is the ee of a solution with [α] = +10.5?

Chapter 15 Solutions

General, Organic, and Biological Chemistry - 4th edition

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