How Many Stereoisomers Can Aldoheptose Have?

  • Thread starter Thread starter kasse
  • Start date Start date
Click For Summary
SUMMARY

The discussion focuses on the stereoisomer count for various sugars, specifically aldoheptose, 2-ketoheptose, and ketotriose. For 2-ketoheptose, which has 4 asymmetric centers, there are 16 possible stereoisomers calculated as 2^4. Aldoheptose, with 5 asymmetric centers, yields 32 possible stereoisomers, calculated as 2^5. Ketotriose, having no asymmetric centers, results in only 1 stereoisomer, calculated as 2^0. These calculations confirm the principles of stereochemistry in carbohydrate chemistry.

PREREQUISITES
  • Understanding of stereochemistry concepts
  • Knowledge of asymmetric centers in organic molecules
  • Familiarity with carbohydrate structures and nomenclature
  • Basic mathematical skills for calculating combinations
NEXT STEPS
  • Research the stereochemistry of other carbohydrates, such as aldohexose and ketopentose
  • Learn about the implications of stereoisomerism in biological systems
  • Explore advanced topics in stereochemistry, including enantiomers and diastereomers
  • Study the methods for synthesizing specific stereoisomers in organic chemistry
USEFUL FOR

Chemistry students, organic chemists, and biochemists interested in carbohydrate chemistry and stereochemistry.

kasse
Messages
383
Reaction score
1
Just to check that I've understood the concept of isomerism:

Homework Statement



How many stereoisomers are possible for

a) a 2-ketoheptose
b) an aldoheptose
c) a ketotriose

2. The attempt at a solution

a) First: does the "2" mean that the carbonyl carbon is the second C-atom?

The molecule has 4 asymmetric centers and hence 2^4 = 16 possible stereoisomers.

b) 5 asymmetric centers, so 2^5 = 32 possible stereoisomers

c) No asymmetric centers, therefore 2^0 = 1 possible stereoisomer


Correct?
 
Physics news on Phys.org


Looks OK to me, but second opinion won't hurt.
 

Similar threads

How Many Stereoisomers Do Hexadecanoic Acid and Oleic Acid Have?
  • · Replies 4 ·
Replies
4
Views
2K
Does 2-Methyl-2-Pentene Have Stereoisomers?
  • · Replies 3 ·
Replies
3
Views
4K
MHB (Seemingly) Random Sequences
  • · Replies 7 ·
Replies
7
Views
2K
Fossil Dating for the anthropology department
  • · Replies 6 ·
Replies
6
Views
4K
Biology Genetics Problem -- six independently assorting genes in a plant
  • · Replies 6 ·
Replies
6
Views
5K
How Many Elements Exist If n <= 4?
  • · Replies 5 ·
Replies
5
Views
2K
High School Simple Combo/Permute calculation
  • · Replies 45 ·
2
Replies
45
Views
4K
Undergrad How is spin exchange interaction generalised to many electrons?
  • · Replies 2 ·
Replies
2
Views
2K
Why Is Understanding Biochemistry Foundations Crucial for Medical Students?
  • · Replies 2 ·
Replies
2
Views
2K
Chemistry Determining the positive and negative poles of a molecule
  • · Replies 6 ·
Replies
6
Views
5K