
Following cyclization, carbon #2 in an aldose would be carbon # in the sugar ring.
The number of carbon atoms outside the ring of an aldose is? A) 1 B) 2 C) 3 D) 4
is the following sugar an aldose or ketose? why? what carbon
is its anomeric carbon? is this sugar d or l? which structure (a-d)
describes its beta- anomer?
Н CH OH CH2OH CH OH -оон CH2OH ОН о ОН ₂ ООН ОН ОН ОН HO-31 ОН ОН ОН ОН ОН Нота-Н -Н НА-ОН Н -ОН 6CHOH ОН ОН ОН ОН A в D
Please answer the following questions woth short answer 1. Which carbon is the aldose carbon in glucose? 2. Which carbon is the ketose carbon of fructose? 3. What is the product of oxidation of an aldose? 7. How many chiral carbons are in linear glucose? 8. How many chiral carbons are in cyclized glucose? 9. What is the oxidation state of the aldose carbon in glucose? 10. What is the electronic configuration of C1 in cyclized glucose?
5 a) identify the anomeric carbon in the below molecule
b) identify the thpe of ring pyranose or furanose
c) identify if it is a or b
6 a) identify the anomeric carbon in the below molecule
b) identify the thpe of ring pyranose or furanose
c) identify if it is a or b
7 The structure of 6-carbon ketose sugar is shown. Draw the
common cyclic structure of this structure (both a and b form)
8 Identify the relationship...
Number the carbon atoms in the following 5-carbon
sugar.
Number the carbon atoms in the following 5-carbon sugar. OH OH VI. IV. VII. II. A B C D V. CE
1. Draw glucose B-D-glucose in a chair form, and circle the anomeric carbon. Why is the anomeric carbon significant? 2. Why is cyclization of sugars important? What does the concept of mutarotation indicate to us about dual roles of monosaccharides? Two part question: 3. Why are monosaccharides most commonly found in pyran and furan ring forms, rather than: A) other ring motifs -(think along the lines of: why NOT 3,4, or 7 membered rings)? B) in their linear form? 4....
Draw DNA with the sequence 5’-ACTAG-3’. Label the sugar ring, the phosphate, the base, the 5’ end and the 3’ end of the molecule. Across from it, draw the sequence it would bind to, labeling the sugar ring, the phosphate, the base, the 5’ end and 3’ end. When drawing out the DNA sequence, please draw it out with atom symbols (such as O, P, H, C, etc) and their bond type (such as single bond ( --) or double...
Ribose is a 5-carbon sugar molecule and an essential part of DNA and RNA. It has the following chemical structure as 6-membered ring: OH 1) Determine its sum formula: 2) Mass spectrum: what is the M* signal? 3) Name functional group A: 4) Name functional group B: 5) What is the approx. pka of functional group C: 6) Functional group A is a reaction of two entities. In this case the reagents are tethered and thus forming a ring. What...
The following compound results from base-catalyzed aldol
cyclization of a 2-substituted cyclohexanone.
Starting with the diketone, propose a mechanism for the
cyclization.
o
1. Below is a monosaccharide in its cyclic (ring) form. OH он Linear form OH a) Is the monosaccharide the a-or the B-anomer? b) Label each carbon with its carbon number. c) Draw the linear form of this monosaccharide with the correct chirality in the box at right. 2. a) Draw the linear form of D-ribose: b) Ribose can form a pyranose ring. Draw an electron arrow on your linear ribose drawing above, indicating which nucleophile attacks which electrophile to...