A pharmaceutical scientist wants to deliver a drug as a single enantiomer shown below. Which enantiomer are they wanting to make? OH Select one: a. R O b. S NH. N N Br
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- Label the stereogenic center(s) in each drug as R or S. L-Dopa is used to treat Parkinson's disease (Chapter 1). Ketamine is an anesthetic. Enalapril belongs to a class of drugs called ACE inhibitors, which are used to lower blood pressure. CH3 NH CI COOH CH,CH,O,C a. Но H NH2 b. OH enalapril Trade name: Vasotec L-dopa ketamineLabel the stereogenic center(s) in each drug as R or S. L-Dopa is used to treat Parkinson's disease (Chapter 1). Ketamine is an anesthetic. Enalapril belongs to a class of drugs called ACE inhibitors, which are used to lower blood pressure. CH3 NHẠC CH,CH,Oz a. HO OH COOH HÌNH, L-dopa b. ketamine H enalapril Trade name: Vasotec CO₂H8) Identify enantiomers. C E A CI H ICL F CI H Cle H. CI H. CI H CI CI H. F H. 'F 'F H. F H H. F H H H. A) B and D, A and C B) B and D C) A and B, A and D, B and C, C and D D) B and D, A and B, A and D, B and C, C and D E) A and C
- If a mixture has an ee of 30%, what is the percentage enantiomer) of each enantiomer? (ee = excess Select one: OA. 85%: 15% 70% 30% B. O C. 75%: 25% O D. 65%: 35%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 HLocate the stereogenic centers in each compound and draw the enantiomer. Exemestane (trade name Aromasin) is used to treat breast cancer, and zanamivir is used to treat and prevent influenza. a. I H Ill exemestane O
- How are the compounds in each pair related to each other? Are they identical, enantiomers, diastereomers, constitutional isomers, or not isomers of each other? a. b. H НО H 'OH H and and H H H HO OHDesignate the following compound as R or S. CH₂CH₂l HO-C-CH3 CH₂OH Select one: O A. There are no stereocenters in molecule. OB. S C. R1. Label the following as a: diasteriomer, enantiomer or neither (different compound) CHO CHO a. b. HO- HO- -H H- HO- H CH₂OH CHO -OH -H CH₂OH and H- H and -OH -OH CH₂OH CHO HO- -H HO- +H CH₂OH a. b.
- Label each stereogenic center in the following compounds as R or S. а. но b. Br Но Н c.How are the compounds in each pair related to each other? Are they identical, enantiomers, diastereomers, constitutional isomers, or not isomers of each other? CH3 a. b. C. d. e. f. CH3 HC. HO I CI CH3 CH3 Br H C and and CHO H OH and and and and H CI OHC HC HO CI CBr CH3 OH g. h. j. Br I. HO • k. H and •pt-pt. OH BrCH₂ H H CH3 H HỌ CH3 "Br H and CCH₂OH CH3 and and CH₂Br and CH3 H Br HC Br H. and HO CH3- CH3 CH3 H HOCH₂ H BrCH₂ Br H CH3 CH3 _CH_OH H OH HExplain each statement by referring to compounds A-E. он он HO .OH CI OH A в E a. A has a mirror image but no enantiomer. b. B has an enantiomer and no diastereomer. c. C has both an enantiomer and a diastereomer. d. D has a diastereomer but no enatiomer. e. E has a diastereomer but no enantiomer. E..
