Concept explainers
(a)
Interpretation: The given Haworth projection is to be converted into three-dimensional representation by the use of chair pyranose ring.
Concept introduction: The structural representation of sugar molecule in cyclic form is known as Haworth projection. Sugar molecule that has six-membered-ring is known as pyranose and a sugar molecule that has five-membered-ring is called furanose.
(b)
Interpretation: The given Haworth projection is to be converted into three-dimensional representation by the use of chair pyranose ring.
Concept introduction: The structural representation of sugar molecule in cyclic form is known as Haworth projection. Sugar molecule that has six-membered-ring is known as pyranose and a sugar molecule that has five-membered-ring is called furanose.
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Connect Online Access 1-Semester for Organic Chemistry
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- Determine whether each steriosenic center below has & Or S Configuration. Ho -OM Configuration of a Configuration of B configuration of Carrow_forward1. Draw the Fischer projection for a) D-Glucose and b) D-Galactose and their corresponding enantiomers. 2. Assign the absolute configuration for each chiral carbon by writing the carbon number followed by R or S enclosed in parenthesis (e.g. 2R, 3S, 4R, 5S). Answers must be written on the right side of the Fischer projection aligned with the corresponding chiral carbon. 3. Underline the absolute configuration, you have to show that it is italicized by underlining the absolute configuration.arrow_forwardExplain the method to separate enantiomers ?arrow_forward
- 1. Calculate the composition of a mixture composed of a-D- glucose (specific rotation20 = 112°) and B-D-glucose (specific rotation,20 of 19°), which has a specific rotation of 94°arrow_forwardHow many stereocenters are present in D-glucose? How many stereocenters are present in D-ribose? How many stereoisomers are possible for D-glucose? How many stereoisomers are possible for D-ribose?arrow_forwardThe Fischer projection for linear D-glucose is shown. Fill in the missing H's and OH's for the wedge and dash projections. Then convert to a Haworth projection for both a-D-glucose and B-D-glucose in linear form. Next, convert to the cyclic form and finally to a chair conformation for both pyranoses. Haworth projection pyranose (chair) CHO H- HO- H -OH -H -OH H-OH CH₂OH = 4 3 4 5 6 3 a-D-glucose rotate 90° clockwise OH H ba 1 6 4 5 B-D-glucose 5 4 3 3 -OH O 1 Harrow_forward
- The monosaacharide talose is shown as a Fischer projection. Which is a correct Haworth projection for talose СНО HO HO H HO H H- -ОН CH,OH CHOH HO OH HO. OH O OHarrow_forwardA) Its IUPAC name (including R/S assignments) B) Its Fischer projection C) Its two possible corresponding pyranose Haworth projections D) Its four possible corresponding pyranose chair structures, specifically: i) Its two interconverting a diastereomers ii) Its two interconverting ẞ diastereomers E) Its two possible corresponding furanose Haworth projections HO OH OH O acce OH OH Harrow_forward6:18 D-fructose Linear formarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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