Concept explainers
(a)
Interpretation:
The Fischer projection of the stereoisomer of Threonine which has two chiral centers with the configuration 2S,3R has to be drawn.
Concept Introduction:
The two dimensional representation of the molecules is known as Fischer projection. In Fischer projection, the atoms present on the horizontal plane are facing towards the front and the atoms present on the vertical plane are away from the plane.
When the atom is bonded to four different groups, based on the order of priority of the groups present, if it gets clock wise rotation then it is said to be in R-configuration, if the order of priority of the functional groups give anti-clock wise rotation, then it is said to be S-configuration.
(b)
Interpretation:
The three dimensional representation of the stereoisomer of Threonine which has two chiral centers with the configuration 2S,3R has to be drawn.
Want to see the full answer?
Check out a sample textbook solutionChapter 27 Solutions
Organic Chemistry
- 22-59 What is the effect of salt bridges on the tertiary structure of proteins?arrow_forwardWhat are the enantiomers of ibuprofen? Point out the chiral centers and indicate absolute configuration for each chiral center.arrow_forwardHow many chiral centres does the following structure of ibuprofen contain? H3C HO CH3 H3C O 2 3.arrow_forward
- 4. (a) Draw all possible isomers of C4H3CI2. (b) Indicate which pairs of compounds are enantiomers of one another. (c) Indicate which pairs of compounds are diastereomers of one another. (d) Indicate which compounds would have optical rotations of 0°. (e) Assign R and S configurations to all chirality centers of the compounds in part (a).arrow_forwardThe structural formula for the open-chain form of galactose is CH Н—ҫ—ОН Но—С—н НО—С—Н Н—ҫ—ОН CH-ОН (a) Is this molecule a sugar? (b) How many chiral carbons are present in the molecule? (C) Draw the structure of the six-member-ring form of this molecule.arrow_forwardDescribe the carbohydrate structure depicted below; CH2OH H -CH2 О он он HO OH H OH H OH your answer should specifically indicate (i) the type(s) of isomer, i.e., a- or b-, (ii) the type(s) of ring structures present and (iii) the type of glycosidic linkage presentarrow_forward
- Chiral Atoms: Determine how many chiral centers each molecule has and indicate wnich atoms are chiral by adding an asterisk (*) next to it. Then assign the chiral atom as either (R) or (S). Br Br он "Br "CHa Br Br Br Br CH3arrow_forwardWhy are amino acids chiral?arrow_forwardWith the exception of Glycine, all amino acids are chiral. Two amino acids have actually more than one chiral carbon: draw the structures of these amino acids at pH 7.0 and indicate the locations of the chiral centers in each of these structures.arrow_forward
- Explain the basic principles of chirality ?arrow_forwardThreonine, an amino acid, has four stereoisomers. The stereoisomer found in nature is (2S,3R)-threonine. Which of the following structures represents the naturally occurring amino acid?arrow_forwardHexadecyltrimethylammonium chloride, CH3(CH2)15N(CH3)+3 Cl-, is one of a class of cationic detergents, commonly used inshampoos and as “clothes rinses.”(a) Identify the hydrophilic head group and the hydrophobic tail.(b) Draw a depiction of a micelle that would form if this compound were dissolved in water.(c) What are the intermolecular forces that are primarily responsible for the micelle’s solubility in water?arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub CoIntroduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning