Concept explainers
Interpretation:
To identify the
Concept Introduction:
A group of atoms which are responsible for the
A stereo centre is the centre where all the 4 groups attached to a carbon are different.
A keto group stays in the equilibrium with its enol (−OH) form by resonance.
NaBH4 is a reducing agent it reduces
Interpretation:
To draw the stereorepresentation of the r enantiomer as s enantiomer is more active than r enantiomer.
Concept Introduction:
A stereo centre is the centre where all the 4 groups attached to a carbon are different.
A keto group stays in the equilibrium with its enol (−OH) form by resonance.
NaBH4 is a reducing agent it reduces ketone or aldehyde to an alcohol.
Interpretation:
To draw the structural formula of keto form of Warfarin.
Concept Introduction:
A stereo centre is the centre where all the 4 groups attached to a carbon are different.
A keto group stays in the equilibrium with its enol (−OH) form by resonance.
NaBH4 is a reducing agent it reduces ketone or aldehyde to an alcohol.
Interpretation:
To draw the product formed by treating warfarin with NaBH4..
Concept Introduction:
A stereo centre is the centre where all the 4 groups attached to a carbon are different.
A keto group stays in the equilibrium with its enol (−OH) form by resonance.
NaBH4 is a reducing agent it reduces ketone or aldehyde to an alcohol.
Interpretation:
The number of molecules of warfarin present in 4 mg tablet should be determined.
Concept Introduction:
A stereo centre is the centre where all the 4 groups attached to a carbon are different.
A keto group stays in the equilibrium with its enol (−OH) form by resonance.
NaBH4 is a reducing agent it reduces ketone or aldehyde to an alcohol.
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Chapter 17 Solutions
Introduction to General, Organic and Biochemistry
- 16-58 Following is a structural formula of desosamine, a sugar component of several macrolide antibiotics, including the erythromycins. The configuration shown here is that of the natural product. Erythromycin is produced by a strain of Streptomyces erythreus originally found in a soil sample from the Philippine Archipelago. ch3 T Desosamine Name all the functional groups in desosamine. (Chapter 10) How many stereocenters are present in desosamine? How many stereoisomers are possible for it? How many pairs of enantiomers are possible for it? Draw the alternative chair conformations for desosamine and label which groups are equatorial and which are axial. (d > Which of the alternative chair conformations for desosamine is more stable?arrow_forwardLabel each of the following structures as a cyclic hemiacetal, hemiketal, acetal, ketal, or none of these: a. b. c.arrow_forwardLabel each of the following structures as a hemiacetal, hemiketal, acetal, ketal, or none of these: a. c. b.arrow_forward
- 18-18 Propanoic acid and methyl acetate are constitutional isomers, and both are liquids at room temperature. One of these compounds has a boiling point of 141°C; the other has a boiling point of 57°C. Which compound has which boiling point? Explain.arrow_forward15-10 Define the term “stereoisomer.” Name three types of stereoisomers.arrow_forward7) I's the following compound a hydrate, hemiacetal, acetal, hemiketal or ketal? في المساجد LOCHarrow_forward
- Dexamethasone is a halogen-containing steroid used to treat infl ammation in rheumatoid arthritis and other conditions. (a) Classify the alkyl halide in dexamethasone as 1 °, 2 °, or 3 °. (b) Classify the hydroxyl groups as 1 °, 2 °, or 3 °.arrow_forwardCelery ketone, like carvone, has two distinct aromas. In contrast to the S enantiomer's licorice scent, the R enantiomer has an earthy, celery-like aroma. Each enantiomer should be depicted and its odor assigned.arrow_forward4arrow_forward
- Consider the following two molecules and answer the following questions. Molecule A: HO- CH-CH3 CH3 Molecule B: || H,C-CH,-C-0-CH3 a) What are all of the IMFS present in molecule A? b) What are all of the IMFS present in molecule B? c) Which would have the higher boiling point, molecule A or molecule B? d) What is the relationship between molecules A & B: structural isomers, geometric isomers, identical, or not related?arrow_forwardDraw the compound shown in the hemiacetal form as a pyranose in the more stable chair form. ww HO- HO. HO- HO- HO-arrow_forwardWhich of the following statements is correct with regard to the structure of retinol? Retinol is a vitamin that plays an important role in eye function. The structure of retinol is shown below. H3C CH3 CH3 CH3 CH3 Select one: O Retinol is a diastereoisomer O Retinol is a chiral compound O Retinol is a meso compound O Retinol is an achiral compound OH Next pagearrow_forward
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