Concept explainers
(a)
Interpretation:
The number of asymmetric carbon atoms that are present in an aldotetrose and structures of all the stereoisomers of aldotetrose are to be stated.
Concept introduction:
Carbon atom that is connected to four different types of groups or atoms is known as asymmetric or chiral carbon atom.
The compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.
(b)
Interpretation:
The number of asymmetric carbon atoms that are present in a ketotetrose and structures of all the stereoisomers of ketotetrose are to be stated.
Concept introduction:
Carbon atom that is connected to four different types of groups or atoms is known as asymmetric or chiral carbon atom.
The compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.
(c)
Interpretation:
The number of asymmetric carbon atoms and stereoisomers for an aldohexose and ketohexose is to be stated.
Concept introduction:
Carbon atom that is connected to four different types of groups or atoms is known as asymmetric or chiral carbon atom.
The compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.
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Organic Chemistry (9th Edition)
- Which of the following pairs of structures represent a pair of enantiomers? a. b. C. d. O a O b Oc C Od H3C... H Br C HC NC H3CH₂C COOH H... C CN CH3 Br HC H₂N CH3 OH COOH CN HC-CH3 Br Br H.C. HOOC OH H... C H₂C CN H3C C H₂N CH₂CH3 COOH Harrow_forwardGlucose is a simple sugar with five substituents bonded to a sixmembered ring.a.Using a chair representation, draw the most stable arrangement of these substituents on the six-membered ring. b.Convert this representation to one that uses a hexagon with wedges and dashed wedges. c.Draw a constitutional isomer of glucose. d.Draw a stereoisomer that has an axial OH group on one carbon.arrow_forwardGlucose is a simple sugar with five substituents bonded to a six-membered ring.a. Using a chair representation, draw the most stable arrangement of these substituents on the six-membered ring.b. Convert this representation into one that uses a hexagon with wedges and dashed wedges.c. Draw a constitutional isomer of glucose.d. Draw a stereoisomer that has an axial OH group on one carbon.arrow_forward
- Please answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. a. Do enantiomers have the same molecular formula? b. Does one structural formula represent both members of a pair of enantiomers? c. Are enantiomers stereoisomers?arrow_forwardIII. Consider the compound below. H. F HO- HO -HO- (Atomic number: H-1, C-6, O-8, F-9) a. How many chiral centers are in the molecule? b. How many stereoisomers are there for the compound? c. Draw the Fischer projection for each of the stereoisomer and determine the absolute configuration (R or S). Label each using I, II, etc. d. Which pairs are enantiomers? Which are diastereomers?arrow_forwardUtilize the carbohydrate provided to answer each part below. a. On the Fischer projection, clearly circle the penultimate carbon. b. Circle the appropriate name listed below that corresponds to the structure.• D-aldopentose • D-aldohexose • D-ketopentose • D-ketohexose • L-aldopentose • L-aldohexose • L-ketopentose • L-ketohexosearrow_forward
- Trabectedin, shown in a ball-and-stick model on the cover of this text, is an anticancer drug sold under the trade name Yondelis. a. Locate the stereogenic centers in trabectedin. b.What is the maximum number of stereoisomers possible for trabectedin? c.Draw the enantiomer. d.Draw a diastereomer. e.If the specific rotation of trabectedin is +41.5, what is the [α] of a solution that contains 75% trabectedin and 25% of its enantiomer?f . What is the ee of a solution with [α] = +10.5?arrow_forwardDraw Fischer projection of the mirror image (enantiomer) D-robose c. Are these molecules superimposable? d. What type of isomerism is represented by these mirror images? e. Construct a model of a third isomer that is not a mirror image of the two above.arrow_forward4. Do the following structures represent the same molecules or pairs of enantiomers? Additionally, convert the perspective structures to Fischer projections and vice versa. a. b. C. d. 11 CH HOH₂CH₂C-COH CH₂Br H₂C-CCI CH₂CH3 CH₂Br H-OH CH3 CI HỌC CHỊCH H CH₂CH3 CI HẠCH,C-C 'CH, CH₂Br H₂CH₂C-CH₂CH₂OH OH H HO-CH3 CH₂Br CH3 0-5-6-5 H+CI CH CH₂CH3arrow_forward
- 6:18 D-fructose Linear formarrow_forward5 6 How many stereoisomers of the following molecule are possible in principle? Attachments HO H₂C A. 8 B. 128 C. 64 D. 32 E. 16 CH3 HO What is the relationship between the following two compounds? Attachments HO OH OH moja moja A. They are diastereomers B. They are enantiomers ⒸC. They are mesomers D. None of the above NH₂ OHarrow_forwardWhat is the configuration of each of the asymmetric centers in the Fischer projection of a. D-glucose? b. D-galactose? c. D-ribose? d.D-xylose? e.D-sorbose?arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning