Concept explainers
(a)
Interpretation:
The six-membered ring structures of D-glucose has to be drawn.
Concept introduction:
Glucose is a monosaccharide with a molecular formula
(b)
Interpretation:
The major six-membered ring product of D-glucose has to be given.
Concept introduction:
Glucose is a monosaccharide with a molecular formula
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Organic Chemistry (8th Edition)
- Consider the tetrasaccharide stachyose drawn below. Stachyose is found in white jasmine, soybeans, and lentils. Because humans cannot digest it, its consumption causes flatulence.a. Label all glycoside bonds.b. Classify each glycosidic linkage as α or β and use numbers to designate its location between two rings (e.g., 1→4-β).c. What products are formed when stachyose is hydrolyzed with H3O+?d. Is stachyose a reducing sugar?e. What product is formed when stachyose is treated with excess CH3I, Ag2O?f. What products are formed when the product in (e) is treated with H3O+?arrow_forwardConsider the tetrasaccharide stachyose drawn below. Stachyose is found in white jasmine, soybeans, and lentils. Because humans cannot digest it, its consumption causes flatulence.a. Label all glycoside bonds.b. Classify each glycosidic linkage as αα or ββ and use numbers to designate its location between two rings (e.g., 1→→4-ββ)-c. What products are formed when stachyose is hydrolyzed with H33O++?d. Is stachyose a reducing sugar?e. What product is formed when stachyose is treated with excess CH33I, Ag22O?f. What products are formed when the product in (e) is treated with H33O++?arrow_forwardQuestion 21 Match the structures with the description NH NH CHO CH HO CH, HO HỌ CH, NICH H. ocit, CH, он он HO но- HO HO он CH2 OH >arrow_forward
- Which compound will give a deep blue-black colored solution when treated with iodine? A. starch B. D-glucitol sucrose C. D-fructose D. D-galactose 1. Seliwanoff's tests is used to distinguish a monosaccharide from a disaccharide. A. a reducing sugar from a nonreducing sugar. B. a ketose from an aldose. C. a monosaccharide from a polysaccharide. D. a polysaccharide from a disaccharide.arrow_forward4. . Fill in the blanks for the following molecule. CI H CH₂OH H CICH₂ O H OH H H OH H HO H OH H H CH₂Cl a. This molecule is a b. This molecule connects two c. They are connected by a d. Circle the glycosidic bond. saccharide. saccharide units. glycosidic bond.arrow_forwardA glycosidic bond connects two monosaccharides to create sucrose (more commonly known as table sugar). Identify the type of glycosidic bond connecting the monosaccharides together as well as these two monosaccharides that are found in sucrose. a. α,ß-1,2-glycosidic bond, ß-L-glucose, and α- L-fructose b. α,ß-1,2-glycosidic bond, α-D-galactose, and ß-D-glucose c. α-1,4-glycosidic bond, α-D-glucose, and ß-D-fructose d. α,ß-1,2-glycosidic bond, α-D-glucose, and ß-D-fructosearrow_forward
- 4. What is one chemical test that can distinguish between 2-hexanone and glucose? Indicate the compound that will have a positive result to the test, if there is. 5. What is one chemical test that can distinguish between 1-hexanol and 3-methyl-3-pentanol? Indicate the compound that will have a positive result to the test, if there is. 6. What is one chemical test that can distinguish between 1-naphthol and 1-hexanol? Indicate the compound that will have a positive result to the test, if there is.arrow_forwardstructure of each type of compound. A. D –aldotriose B. L-ketohexosearrow_forward16. What type of functional group is formed when a linear sugar assumes a cyclic structure?A. KetoneB. AldehydeC. HemiacetalD. Ether17. D-fructose is a reducing monosaccharide. The reducing capacity of this sugar is related to the presence of a carbonylgroup. Where is the carbonyl group of this sugar located?A. second carbonB. penultimate carbonC. last carbonD. first carbonarrow_forward
- Which of the following types of monosaccharides have cyclic forms that involve a 5-membered ring? a. Aldohexoses and ketopentoses b. Aldopentoses and ketopentoses c. Aldopentoses and ketohexoses d. All of the above.arrow_forward9. Melibiose is a disaccharide that is 30 times sweeter than sucrose. a. What are the monosaccharide units in melibiose? HO H b. What type of glycosidic bond links the monosaccharides? c. Identify the structure as a- or 6-melibiose. CH₂OH O H OH H H OH H O–CH2 H HO H OH H Melibiose O H OH H OHarrow_forward1. Consider the following molecules. Clearly circle the glycosidic bond on each structure. In the Spae provided clearly describe the type of glycosidic bond illustrated. HO-CH2 O. H. H. OH HO. HO-CH2 OH H. H. H. OH H. OH Но H. H. H. OH OH HOH2Ç HO OH OH CH2OH HI エー エエーarrow_forward
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