EP ORGANIC CHEMISTRY,24 MONTH-OWLV2
EP ORGANIC CHEMISTRY,24 MONTH-OWLV2
9th Edition
ISBN: 9781305084391
Author: McMurry
Publisher: CENGAGE L
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Chapter 29.SE, Problem 25MP
Interpretation Introduction

Interpretation:

The amino acid tyrosine is biologically degraded by a series of steps that include the following transformations:

EP ORGANIC CHEMISTRY,24 MONTH-OWLV2, Chapter 29.SE, Problem 25MP , additional homework tip  1

Concept introduction:

α-amino acid, in addition to their role as proton monomeric units, are energy metabolism and processor of many biologically important nitrogen containing compounds. Notably-heme, physiologically active amine, glutathione, nucleotides and nucleotide enzyme. Amino acid are classified as

1) Essential amino acid

2) Non essential amino acid

While the non essential amino acid can be synchronized from metabolic processor, the essential amino acid must be provide by the diet. However, the essential dietary amino acid, instead of being extract or stored for future use, are converted to common metabolic intermediate like pyruvate, oxaloacetate, acetyl CoA, α-ketoglutarate etc. Thus amino acid are also precious of glucose, fatty acid, and ketone bodies and are metabolic fuel.

For the present, tyrosine clarifies itself to be a non essential amino acid, it is thus a metabolic processor and need not be supplied by the diet.

Further tyrisone is alos both a glucogenic and ketogenic amino acid. Its carbon skeleton can be degraded to either of pyruvate, α-ketoglutarate acetyl CoA, fumarate or oxaloacetate glucogenic amino acid and also to acetyl CoA or aceto acetate to be converted to ketone bodies or fatty acid. (ketogenic amino acid)

Degradation of amino acids to one of seven common metabolic intermediates

EP ORGANIC CHEMISTRY,24 MONTH-OWLV2, Chapter 29.SE, Problem 25MP , additional homework tip  2

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2. Predict the NMR spectra for each of these two compounds by listing, in the NMR tables below, the chemical shift, the splitting, and the number of hydrogens associated with each predicted peak. Sort the peaks from largest chemical shift to lowest. **Not all slots must be filled** Peak Chemical Shift (d) 5.7 1 Multiplicity multiplate .......... 5.04 double of doublet 2 4.98 double of doublet 3 4.05 doublet of quartet 4 5 LO 3.80 quartet 1.3 doublet 6 Peak Chemical Shift (d) Multiplicity
Interpreting NMR spectra is a skill that often requires some amount of practice, which, in turn, necessitates access to a collection of NMR spectra. Beyond Labz Organic Synthesis and Organic Qualitative Analysis have spectral libraries containing over 700 1H NMR spectra. In this assignment, you will take advantage of this by first predicting the NMR spectra for two closely related compounds and then checking your predictions by looking up the actual spectra in the spectra library. After completing this assignment, you may wish to select other compounds for additional practice. 1. Write the IUPAC names for the following two structures: Question 2 Question 3 2. Predict the NMR spectra for each of these two compounds by listing, in the NMR tables below, the chemical shift, the splitting, and the number of hydrogens associated with each predicted peak. Sort the peaks from largest chemical shift to lowest. **Not all slots must be filled**
11:14 ... worksheets.beyondlabz.com 3. To check your predictions, click this link for Interpreting NMR Spectra 1. You will see a list of all the - compounds in the spectra library in alphabetical order by IUPAC name. Hovering over a name in the list will show the structure on the chalkboard. The four buttons on the top of the Spectra tab in the tray are used to select the different spectroscopic techniques for the selected compound. Make sure the NMR button has been selected. 4. Scroll through the list of names to find the names for the two compounds you have been given and click on the name to display the NMR spectrum for each. In the NMR tables below, list the chemical shift, the splitting, and the number of hydrogens associated with each peak for each compound. Compare your answers to your predictions. **Not all slots must be filled** Peak Chemical Shift (d) Multiplicity 1 2 3 4 5

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