The total number of six-membered rings that are present in the structure of a cholesterol molecule has to be stated. Concept introduction: The structure of the lipid that is based upon the fused system of rings which includes three identical six-membered rings and only one five-membered ring is known as steroid. The fused ring system of the steroid is known as the steroid nucleus. A steroid of C 27 molecule which is a unit of cell membrane and also a precursor of another steroid-based lipid is known as cholesterol.
The total number of six-membered rings that are present in the structure of a cholesterol molecule has to be stated. Concept introduction: The structure of the lipid that is based upon the fused system of rings which includes three identical six-membered rings and only one five-membered ring is known as steroid. The fused ring system of the steroid is known as the steroid nucleus. A steroid of C 27 molecule which is a unit of cell membrane and also a precursor of another steroid-based lipid is known as cholesterol.
Solution Summary: The author explains the structure of a lipid based upon the fused system of rings, known as the steroid nucleus.
Definition Definition Group of atoms that shape the chemical characteristics of a molecule. The behavior of a functional group is uniform in undergoing comparable chemical reactions, regardless of the other constituents of the molecule. Functional groups aid in the classification and anticipation of reactivity of organic molecules.
Chapter 8, Problem 8.97EP
(a)
Interpretation Introduction
Interpretation: The total number of six-membered rings that are present in the structure of a cholesterol molecule has to be stated.
Concept introduction: The structure of the lipid that is based upon the fused system of rings which includes three identical six-membered rings and only one five-membered ring is known as steroid. The fused ring system of the steroid is known as the steroid nucleus.
A steroid of C27 molecule which is a unit of cell membrane and also a precursor of another steroid-based lipid is known as cholesterol.
(b)
Interpretation Introduction
Interpretation: The total number of amide linkages that are present in the structure of a cholesterol molecule has to be stated.
Concept introduction: The structure of the lipid that is based upon the fused system of rings which includes three identical six-membered rings and only one five-membered ring is known as steroid. The fused ring system of the steroid is known as the steroid nucleus.
A steroid of C27 molecule which is a unit of cell membrane and also a precursor of another steroid-based lipid is known as cholesterol.
(c)
Interpretation Introduction
Interpretation: The total number of hydroxyl substituents that are present in the structure of a cholesterol molecule has to be stated.
Concept introduction: The structure of the lipid that is based upon the fused system of rings which includes three identical six-membered rings and only one five-membered ring is known as steroid. The fused ring system of the steroid is known as the steroid nucleus.
A steroid of C27 molecule which is a unit of cell membrane and also a precursor of another steroid-based lipid is known as cholesterol.
(d)
Interpretation Introduction
Interpretation: The total number of functional groups that are present in the structure of a cholesterol molecule has to be stated.
Concept introduction: The structure of the lipid that is based upon the fused system of rings which includes three identical six-membered rings and only one five-membered ring is known as steroid. The fused ring system of the steroid is known as the steroid nucleus.
A steroid of C27 molecule which is a unit of cell membrane and also a precursor of another steroid-based lipid is known as cholesterol.
(a) Sketch the 'H NMR of the following chemical including the approximate
chemical shifts, the multiplicity (splitting) of all signals and the integration
(b) How many signals would you expect in the 13C NMR?
CH3
Draw the
Show the major and minor product(s) for the following reaction
mechanisms for both reactions and show all resonance structures for any
Explain why the major product is favoured?
intermediates
H-Br
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