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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
(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.
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Chapter 27 Solutions
Organic Chemistry
- What are the enantiomers of ibuprofen? Point out the chiral centers and indicate absolute configuration for each chiral center.arrow_forwardон он но, HỌ он OH но. ÕH ÕH The two structures shown are examples of monosaccharide units with multiple chiral centers. The two structures are Enantiomers Diastereomersarrow_forwardThe structural formula for the open-chain form of D-mannose is CH НО—С—Н Но-с—н Н—С—ОН Н—ҫ—ОН CH-OН (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_forward
- Identify all chiral centres.arrow_forwardDesignate the configuration of each chiral center in the following molecules as R or S. (a) (b) (c) (d) HO N° H F H CI HO>Carrow_forwardA well known non steroidal anti inflammation drug NSAID exists in two sterochemical forms. Only one is biologically active. Below is the structure of the biological active form. Identify the chiral center and determine if it is the R- or S- stereoisomer.arrow_forwardThe quantitative differences in biological activity between the two enantiomers of a compound are sometimes quite large. For example, the D isomer of the drug isoproterenol, used to treat mild asthma, is 50 to 80times more effective as a bronchodilator than the L isomer. Identify the chiral center in isoproterenol. Why do the two enantiomers have such radically different bioactivity?arrow_forwardAND (b) CH₂ CH₂arrow_forwardarrow_back_iosarrow_forward_ios
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