Carbohydrates
Carbohydrates are the organic compounds that are obtained in foods and living matters in the shape of sugars, cellulose, and starch. The general formula of carbohydrates is Cn(H2O)2. The ratio of H and O present in carbohydrates is identical to water.
Starch
Starch is a polysaccharide carbohydrate that belongs to the category of polysaccharide carbohydrates.
Mutarotation
The rotation of a particular structure of the chiral compound because of the epimerization is called mutarotation. It is the repercussion of the ring chain tautomerism. In terms of glucose, this can be defined as the modification in the equilibrium of the α- and β- glucose anomers upon its dissolution in the solvent water. This process is usually seen in the chemistry of carbohydrates.
L Sugar
A chemical compound that is represented with a molecular formula C6H12O6 is called L-(-) sugar. At the carbon’s 5th position, the hydroxyl group is placed to the compound’s left and therefore the sugar is represented as L(-)-sugar. It is capable of rotating the polarized light’s plane in the direction anticlockwise. L isomers are one of the 2 isomers formed by the configurational stereochemistry of the carbohydrates.
What is the absolute stereochemistry at carbons 1,2,3, and 5 ?
![### Cocaine Molecular Structure
#### Description
This diagram displays the chemical structure of cocaine. It is a complex organic compound with the following notable features:
- **Molecular Composition:**
- The structure includes various functional groups and bonds, demonstrating a rich diversity of chemistry.
- Key atoms are labeled, including carbon (C), hydrogen (H), nitrogen (N), and oxygen (O).
- **Highlighted Groups:**
- **Me (Methyl Group):** A functional group attached to the nitrogen atom, indicated by "Me."
- **OMe (Methoxy Group):** Attached to the carbon-oxygen double bond.
- **Ring System:**
- The structure includes a bicyclic system with numbered carbon atoms (1 through 5), which represent different positions within the molecule. These numbers are likely references to specific sites of reactivity or significance in chemical reactions.
- **Functional Groups:**
- Ester groups characterized by the presence of carbonyl (C=O) and ether (O) bonds.
- A phenyl group (an aromatic benzene ring) is present, contributing to the compound's aromaticity and influencing its chemical properties.
This molecular configuration is crucial for understanding cocaine's biochemical behavior and its interaction with biological systems.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F927ccd5f-a2a8-46df-9933-bf1a0a6d56eb%2Fa64de2f6-33c7-433c-a799-65e47a0785a4%2Fabtmpmi_processed.jpeg&w=3840&q=75)
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given
cocaine
find absolute stereochemistry at carbons 1,2,3, and 5
so
absolute stereochemistry = R and S configuration
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