ORGANIC CHEMISTRY
8th Edition
ISBN: 9781323815427
Author: Bruice
Publisher: PEARSON
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Chapter 20, Problem 55P
Interpretation Introduction
Interpretation:
The short segment of hyaluronic acid is to be drawn.
Concept Introduction:
Hyaluronic acid is a
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Hyaluronic acid, a component of connective tissue, is the fluid that lubricates joints. It is a polymer of alternating N-acetyl-d-glucosamine and d-glucuronic acid subunits joined by β-1,3'-glycosidic linkages. Draw a short segment of hyaluronic acid.
The anticoagulant heparin is a polysaccharide that contains alternating residues of -D- glucuronic acid-6- sulfate and N-sulfo-D-glucosamine-6sulfate connected by (1 B 4)- glycosidic linkages. Draw a part of heparin that shows one each of the two residues.
Trehalose, C12H22O11, is a nonreducing sugar that is only 45% as sweet as sugar. When hydrolyzed by aqueous acid or the enzyme maltase, it forms only d-glucose. When it is treated with excess methyl iodide in the presence of Ag2O and then hydrolyzed with water under acidic conditions, only 2,3,4,6-tetra-O-methyl-d-glucose is formed. Draw the structure of trehalose
Chapter 20 Solutions
ORGANIC CHEMISTRY
Ch. 20.1 - Prob. 1PCh. 20.2 - Prob. 2PCh. 20.2 - Prob. 3PCh. 20.3 - Prob. 4PCh. 20.3 - Prob. 5PCh. 20.3 - Prob. 6PCh. 20.4 - Prob. 7PCh. 20.4 - Prob. 8PCh. 20.5 - Prob. 9PCh. 20.5 - Prob. 10P
Ch. 20.5 - Prob. 11PCh. 20.6 - Prob. 12PCh. 20.6 - Prob. 13PCh. 20.6 - Prob. 14PCh. 20.7 - Prob. 15PCh. 20.8 - Prob. 16PCh. 20.9 - Prob. 18PCh. 20.10 - Prob. 20PCh. 20.10 - Prob. 21PCh. 20.10 - Prob. 22PCh. 20.11 - Prob. 23PCh. 20.11 - Prob. 24PCh. 20.12 - Prob. 25PCh. 20.12 - Prob. 26PCh. 20.14 - Prob. 28PCh. 20.15 - Prob. 29PCh. 20.15 - Prob. 30PCh. 20.16 - Prob. 31PCh. 20.17 - Prob. 32PCh. 20.18 - Refer to Figure 20.5 to answer the following...Ch. 20 - Prob. 34PCh. 20 - Prob. 35PCh. 20 - Prob. 36PCh. 20 - Prob. 37PCh. 20 - Prob. 38PCh. 20 - Prob. 39PCh. 20 - Prob. 40PCh. 20 - Prob. 41PCh. 20 - Prob. 42PCh. 20 - Prob. 43PCh. 20 - Prob. 44PCh. 20 - Prob. 45PCh. 20 - Prob. 46PCh. 20 - Prob. 47PCh. 20 - Prob. 48PCh. 20 - The 1H NMR spectrum of D-glucose in D2O exhibits...Ch. 20 - Prob. 50PCh. 20 - Prob. 51PCh. 20 - Prob. 52PCh. 20 - Prob. 53PCh. 20 - Prob. 54PCh. 20 - Prob. 55PCh. 20 - Prob. 56PCh. 20 - Prob. 57PCh. 20 - Prob. 58PCh. 20 - Prob. 59PCh. 20 - Prob. 60PCh. 20 - Prob. 61PCh. 20 - A hexose is obtained when the residue of a shrub...Ch. 20 - Prob. 63PCh. 20 - Prob. 64PCh. 20 - Prob. 65PCh. 20 - Prob. 66PCh. 20 - Prob. 67PCh. 20 - Prob. 68PCh. 20 - Prob. 69PCh. 20 - Prob. 70PCh. 20 - Prob. 71PCh. 20 - Prob. 72PCh. 20 - Prob. 73P
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- Propose structural formulas for the following polysaccharides. Q.) Pectic acid is the main component of pectin, which is responsible for the formation of jellies from fruits and berries. Pectic acid is a polymer of d-galacturonic acid in the pyranose form joined by a-1,4-glycosidic bonds.arrow_forwardFats can be either optically active or optically inactive, depending on their structure. Draw the structure of an optically active fat that yields 2 equivalents of stearic acid and 1 equivalent of oleic acid on hydrolysis. Draw the structure of an optically inactive fat that yields the same products.arrow_forwardEleostearic acid, C18H30O2, is a rare fatty acid found in the tung oil used for finishing furniture. On ozonolysis followed by treatment with zinc, eleostearic acid furnishes one part pentanal, two parts glyoxal (OHC-CHO), and one part 9-oxononanoic acid [OHC(CH2)7CO2H]. What is the structure of eleostearic acid?arrow_forward
- What is the glycosidic linkage present in the dissacharide? A. α-(1→6)-α B. β-(2→1)-α C. α-(1→6)-β D. α-(2→1)-βarrow_forwardPropose structural formulas for the following polysaccharides. Q.) Alginic acid, isolated from seaweed, is used as a thickening agent in ice cream and other foods. Alginic acid is a polymer of d-mannuronic acid in the pyranose form joined by b-1,4-glycosidic bonds.arrow_forwardTrehalose, C12H22O11, is a nonreducing sugar that is only 45% as sweet as sugar. When hydrolyzed by aqueous acid or the enzyme maltase, it formsonly d-glucose. When it is treated with excess methyl iodide in the presence of Ag2O and then hydrolyzed with water under acidic conditions, only2,3,4,6-tetra-O-methyl-d-glucose is formed. Draw the structure of trehalose.arrow_forward
- Draw the structure of a carbohydrate with four b-D-glucopyranosyl units connected by b(1®4) glycosidic linkages, with the second unit being connected via an a(1®6) glycosidic linkage by a side chain having two a-D-galactopyranosyl units connected by an a(1®4) glycosidic linkage.arrow_forwardtrehalose is a disacharide that can be obtained from fungi sea uchins and insects. acid hydrolysis of trehalose yields only D-glucose. trehalose is hydrolysed by a-glucosidase but not b-glucosidase.methylation of trhalose followed by hydrolysis yield two molar equivalents of 2-3-4-6 -tetra-O-methyl-D-glucopyranose. deduce the structure of the trehalose using the experimental dataarrow_forwardVanillin (4-hydroxy-3-methoxybenzaldehyde), the principal component of vanilla, occurs in vanilla beans and other natural sources as a b-d-glucopyranoside. Draw a structural formula for this glycoside, showing the d-glucose unit as a chair conformation.arrow_forward
- Draw the product that is obtained from the reaction of cholesterol with the following reagents a. H2, Pd/C b. acetyl chloride c. H2SO4, ∆ d. H2O, H+ e. a peroxyacidarrow_forwardCompound A boils at 25 C Compound B boils at 80 C Which has the strong IMFs? OB O Aarrow_forwardDraw the products formed when cholesterol is treated with each reagent. Indicate the stereochemistry around anystereogenic centers in the product.a. CH3COCIb. H2, Pd-Cc. PCCd. leic acid, H+e. [1] BH3 ·THF; [2] H2O2, -OHarrow_forward
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