Organic Chemistry - Standalone book
10th Edition
ISBN: 9780073511214
Author: Francis A Carey Dr., Robert M. Giuliano
Publisher: McGraw-Hill Education
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Question
Chapter 25, Problem 21P
Interpretation Introduction
Interpretation:
The hexose that results by the hydrolysis of the glycoside bond of phrenosine is to be provided and analyzed; the structural formulas for cerebronic acid and sphingosine are to be drawn.
Concept introduction:
The simplest hydrolyzed form that is obtained from the carbohydrates is known as monosaccharide. Polysaccharides are those types of sugars which contain more than ten units of monosaccharides.
Hexose contains six carbon atoms and is a monosaccharide having a chemical formula
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(a) Label all the O atoms that are part of a glycoside in rebaudioside A. Rebaudioside A, marketed under the trade name Truvia, is a sweet glycoside obtained from the stevia plant, which has been used for centuries in Paraguay to sweeten foods. (b) The alcohol or phenol formed from the hydrolysis of a glycoside is called an aglycon. What aglycon and monosaccharides are formed by the hydrolysis of rebaudioside A?
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Explain the meaning of the following:
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Chapter 25 Solutions
Organic Chemistry - Standalone book
Ch. 25.2 - What fatty acids are produced on hydrolysis of...Ch. 25.3 - Give the structure of the keto acyl-ACP formed...Ch. 25.4 - Prob. 3PCh. 25.4 - Prob. 4PCh. 25.5 - Prob. 5PCh. 25.6 - Write the structural formula and give the IUPAC...Ch. 25.6 - Prob. 7PCh. 25.7 - Locate the isoprene units in each of the...Ch. 25.7 - Prob. 9PCh. 25.9 - Prob. 10P
Ch. 25.9 - Prob. 11PCh. 25.10 - Prob. 12PCh. 25.11 - Prob. 13PCh. 25.11 - Prob. 14PCh. 25.12 - Prob. 15PCh. 25.16 - Prob. 16PCh. 25 - Prob. 17PCh. 25 - Prob. 18PCh. 25 - Prob. 19PCh. 25 - Pyrethrins are a group of naturally occurring...Ch. 25 - Prob. 21PCh. 25 - Prob. 22PCh. 25 - Prob. 23PCh. 25 - Prob. 24PCh. 25 - Prob. 25PCh. 25 - Prob. 26PCh. 25 - Prob. 27PCh. 25 - Prob. 28PCh. 25 - A synthesis of triacylglycerols has been described...Ch. 25 - Prob. 30PCh. 25 - Prob. 31PCh. 25 - Prob. 32PCh. 25 - Prob. 33DSPCh. 25 - Prob. 34DSPCh. 25 - Prob. 35DSPCh. 25 - Prob. 36DSPCh. 25 - Prob. 37DSPCh. 25 - Prob. 38DSP
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- Predict the products obtained when d-galactose reacts with each reagent.(a) Br2 and H2O (b) NaOH, H2O (c) CH3OH, H +arrow_forward27. Which of the following statements about cholesterol is not correct? CH3 CH3 H. d но Cholesterol (a) Cholesterol is a steroid that contains a tetracyclic ring system. (b) Cholesterol is a steroid that contains 8 chiral carbons and can form 28 or 256 stereoisomers. (c) Each atom or group attached to a ring-junction carbon (i.e., carbons a -e) is in a trans or axial position. Because of this the tetracyclic ring system is mostly flat. (d) Cholesterol is used to synthesized vitamin D, bile acids, sex hormones, and adrenocorticoid hormones. (e) Cholesterol is not found in the cell membranes of animals.arrow_forwardPredict the products obtained when d-galactose reacts with each reagent.(a) Br2 and H2Oarrow_forward
- (i) Acetylation of glucose with acetic anhydride gives glucose pentacetate. Write the structure of the pentacetate. (ii) Explain – Why glucose pentacetate does not react with hydroxylamine?arrow_forwardDraw the structure of an example of each of the following types of lipids: (d) a soap (e) a detergentarrow_forwardIn solution, glucose is mostly found in the cyclic hemiacetal state, which lacks an aldehyde group. How are mild oxidising agents able to oxidise glucose?arrow_forward
- What glycosides are formed when each monosaccharide is treated with CH3CH2OH, HCl: (a) β-D-mannose; (b) α-D-gulose; (c) β-D-fructose?arrow_forwardDraw the structures (using chair conformations of pyranoses) of the following disaccharides.(a) 4-O-(a-d-glucopyranosyl)-d-galactopyranose(arrow_forwardd-(-)-Erythrose has the formula HOCH2¬CH(OH)¬CH(OH)¬CHO, and the d in its name implies that it can be degraded to d-(+)-glyceraldehyde. The (-) in its name implies that d-(-)-erythrose is optically active (levorotatory). When d-(-)-erythrose is reduced (using H2 and a nickel catalyst), it gives an optically inactive product of formula HOCH2¬CH(OH)¬CH(OH)¬CH2OH. Knowing the absolute configuration of d-(+)-glyceraldehyde (Section 5-14), determine the absolute configuration of d-(-)-erythrose.arrow_forward
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