It is to be determined how many D-aldoheptoses are possible. The Fischer projection of one of them and its enantiomer is to be drawn. Concept introduction: The monosaccharide with seven carbon atoms is heptose. The functional group present in aldoheptoses is aldehyde . The functional group is situated at C1 carbon atom. Any D-sugar is distinguished by having the OH group of the highest numbered asymmetric carbon appear on the right in its Fischer projection. Stereoisomers that differ in their spatial arrangement of atoms and are non-superimposable on their mirror image are called chiral molecules. The asymmetric center in the molecule is called the chiral center. The molecules having non-superimposable mirror images are enantiomers. The maximum number of stereoisomers that can exist for a given molecule is calculated by the formula 2 n , where n is the number of chiral centers in the molecule. A molecule is meso if it contains at least two chiral centers but has a plane of symmetry that makes it achiral. Achiral compounds are optically inactive.

Question

Want to see the full answer?

Answer 1

Question

Chapter 5, Problem 5.64P

Interpretation Introduction

Interpretation:

It is to be determined how many D-aldoheptoses are possible. The Fischer projection of one of them and its enantiomer is to be drawn.

Concept introduction:

The monosaccharide with seven carbon atoms is heptose. The functional group present in aldoheptoses is aldehyde. The functional group is situated at C1 carbon atom. Any D-sugar is distinguished by having the OH group of the highest numbered asymmetric carbon appear on the right in its Fischer projection.

Stereoisomers that differ in their spatial arrangement of atoms and are non-superimposable on their mirror image are called chiral molecules. The asymmetric center in the molecule is called the chiral center. The molecules having non-superimposable mirror images are enantiomers.

The maximum number of stereoisomers that can exist for a given molecule is calculated by the formula 2n, where n is the number of chiral centers in the molecule. A molecule is meso if it contains at least two chiral centers but has a plane of symmetry that makes it achiral. Achiral compounds are optically inactive.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Gramicidin A can adopt more than one structure; NMR spectroscopy has revealed an “end-to-end” dimer form, and x-ray crystallography has revealed an “anti-parallel double- helical” form. Briefly outline and describe an experimentalapproach/strategy to investigate WHICH configuration (“end-to-end dimer” vs “anti-paralleldouble helical”) gramicidin adopts in an actual lipid bilayer.

Don't used hand raiting

CHEM2323 Problem 2-24 Tt O e: ל Predict the product(s) of the following acid/base reactions. Draw curved arrows to show the formation and breaking of bonds. If the bonds needed are not drawn out, you should redraw them. + BF3 (a) (b) HI + (c) OH -BF Problem 2-25 Use curved arrows and a proton (H+) to draw the protonated form of the following Lewis bases. Before starting, add all missing lone pairs. (a) (b) :0: (c) N 1 CHEM2323 PS CH02 Name: