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- Assign (R) or (S) configuration to each chiral center in the molecules below. Then indicate if the molecules are identical, constitutional isomers, enantiomers, or diastereomers. F F ОН VS. OHHow many chirality center/s are in this molecule? show them OH H;C-CH,ĊHCH,CH3NH2 Br OH HS- CI How many chiral centers do each molecules possess? How many stereoisomers of each molecule could be drawn? D=の=
- NH2 NH2 of the most important properties of chiral ules in solution is their effect on plane- zed light, this effect is called optical activity. -H 2 COOH HOOC 3 H3C CH3 an enantiomer rotates a plane-polarized light e positive direction or clockwise, it is rotary (+ or d), while for a negative direction unterclockwise, it is levorotary (- or l) (+)-Alanine (-)-Alanine Alanine is a chiral amino acid that has two enantiomers: (+)-alanine and (-)-alanine. These two are optical isomers. 78. Which enantiomer of alanine rotates the plane polarized light clockwise?Draw the optical isomers of CH3-CHOH-CHOH-CH3 . INDICATE the absolute configuration (R/S) of each chiral center. Which are enantiomers? Which are diastereomers? Is there any meso compound present? Identify if yes.Determine and label the configuration of each chiral carbon in the molecule shown below. HN B O FI OH The molecule shown below is the synthetic drug Latuda (Lurasidone) that is prescribed for antipsychotic for the treatment of schizophrenia in adults and adolescents (13-17 years). Examine the molecule carefully and answer the following questions. H 'N (S) H INH (R) (S) (R) IH H (S) O (S) a) Identify and label the functional groups in the molecule. b) Confirm the configuration of each stereogenic (R/S) center the molecule. c) Label the hybridization of all the nitrogen atoms in the molecule d) Circle of the most basic atom in the molecule and estimate the pKa of the conjugate acid of the base.
- What is the absolute configuration (if any) of the chiral center of the following? A) R B) S C) not chiral H3C HO H1. Identify the configuration of each chiral center in the following compounds. Draw the enantiomer for each of the following compounds. a) b) c) ОН ΘΗ OH H CH₂CH₂OH 12 Determine the absolute configuration of the chiral center in the following Fischer Projections #4 H₂C- H₂N H₂N- H OH CH₂CH3 CH₂SH Br OH -C-OH -CH3
- 4. Assign an R/S configuration to each chiral center in the compounds below. CI HO HO OH NH, CI CIQ1. Draw the enantiomers for the following molecules and assign all chiral centres as R or F |C(CH3)3 -PH2 CHO Br CH2OH H1. Draw all possible stereoisomers for the following molecule. Once drawn, assign the configuration at each chiral center as R or S. Give the relationship between each stereoisomer that was drawn as enantiomers, diastereomers, or meso compound. You may build a table to give the relationship between each stereoisomer. ОН NH2