Draw Fischer projections for the two D-aldohexoses whose stereochemistry and CS is the same as that of D-arabinose at • You may draw your Fischer projection without using wedged or hashed bonds. Align the Fischer projection vertically, e.g. O H H OH H- -OH H OH HO. • Show explicitly the bonds to any hydrogens attached to chiral carbons. Do not show bonds to other hydrogens. A start stnicture for vou modifr is provided in the cketche
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.
Fischer projections for 2 D-aldohexose
![**Title:** Drawing Fischer Projections for D-aldoses with Specific Stereochemistry
**Instructions:**
Draw Fischer projections for the two **D-aldohexoses** whose stereochemistry at **C3, C4, and C5** is the same as that of **D-arabinose at C2, C3, and C4**.
- **Guidelines:**
- You may draw your Fischer projection without using wedged or hashed bonds. Align the Fischer projection vertically, e.g.,
\[
\begin{array}{c}
\text{O}\\
\mid\\
\text{H}\\
\mid\\
\text{OH}\\
\mid\\
\text{H}\\
\mid\\
\text{OH}\\
\mid\\
\text{H}\\
\mid\\
\text{OH}
\end{array}
\]
- **Show explicitly** the bonds to any hydrogens attached to chiral carbons. Do not show bonds to other hydrogens.
- A start structure for you to modify is provided in the sketcher below.
**Diagrams:**
1. **Sketcher Interface:**
- Provides tools like a pencil, eraser, and templates for drawing and modifying molecular structures.
- Contains two editable panels for sketching, each starting with incorrect carbon chains labeled with "CH₃"
- The panels both show a repetitive chain of methyl groups (H₃C) connected linearly which needs modification to represent D-aldohexoses.
- Models should be redrawn to display:
- Correct carbon backbone.
- Hydroxyl group orientation at the specified chiral centers.
**Navigation:**
- Use the "Previous" and "Next" buttons to navigate through the sketches.
- Options to "Copy" and "Paste" structures are available.
- Click "Email Instructor" to send your completed work or "Save and Exit" to finish.
**Note:** Ensure to follow the specific stereochemistry as instructed to achieve the correct molecular configuration.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4ff02d2e-23e6-4c2f-ba0a-04d5e3b9a917%2F1c072efd-1f56-4cdd-aab3-8ddfd0ee1027%2Flsp1d19_processed.png&w=3840&q=75)
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