Draw the missing organic structures in the following multistep synthesis. Show all structures at physiological pH (pH = 7.4). Ignore any inorganic byproducts formed. HO H&N O Select to Draw 00 Fmoc-Cl Na2CO3, H2O piperidine Select to Draw Met-OBn DCC Select to Draw
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- N-(2-hydroxyethylpiperazine-N'-(2-ethanesulfonic A purified protein is in a Hepes acid) buffer at pH 7 with 475 mM NaCl. A dialysis membrane tube holds a 2.5 ml. sample of the protein solution. The sample tube floats in a beaker containing 1.75 L of the same Hepes buffer, but with 0 mM NaCl, for dialysis. Small molecules and ions (such as Na*, CI, and Hepes) can to diffuse across the dialysis membrane, but the protein cannot. Assume there are no sample volume changes during the dialysis. Calculate the final concentration of NaCl in the protein sample once the dialysis has come to equilibrium. [NaCl] after a single dialysis: mM Calculate the final NaCl concentration in the 2.5 ml. protein sample after dialysis in 175 mL of the same Hepes buffer. with 0 mM NaCl, twice in succession. [NaCl] after a double dialysis: mMSeveral compounds have been found to inhibit -lactamase, and drugs based on these compounds can be taken in combination with penicillins and cephalosporins to restore their effectiveness when resistance is known to be a problem. The commonly prescribed formulation called Augmentin is a combination of the -lactamase inhibitor shown below with amoxicillin (shown above). It is used to treat childhood ear infections when resistance is suspected, and many kids know it as the white liquid that tastes like bananas. Which of the statements below are true statements? 1. The stereochemistry of the fusion between the four-and five-membered rings in the inhibitor and amoxicillin are different. 2. The inhibitor possesses enol ether and allylic alcohol functional groups while the antibiotic possesses a phenol and a secondary amide functional group. 3. Neither the inhibitor nor the antibiotic contains strained rings. 4. Both 1 and 2 are true.Isoprenaline is an adrenergic agonist. The isoprenaline analogue shown below demonstrates a dramatic rise in HO HD ine Ann activity. What is the most likely conclusion? Select one: O a, The analogue has an additional ionic interaction O b. Activity has increased due to increased molecular weight O c. The extra substituent is acting as e-donating that stabilizes the central amino group
- Match the pKa values to the appropriate compound. pKa values: 0.28, 1.24, 2.66, 2.86, and 3.12. Compounds: (a) FCH2COOH; (b) CF3COOH; (c) F2CHCOOH; (d) ICH2COOH; (e) BrCH2COOH.SHOW YOUR COMPLETE SOLUTION hint : its BCC(4 pts) a) a) Name these compounds Amines w HCI H₂N none properly: bon 29e soluble HCO, Na b) pts) Which of the following would give a positive coe b) acetone d) cyclopentanone H₂C CH3 aqu NH CH3 datioase term is use phenyl an efter b) basic hydrolysis of an ester nide For each of the above label it as a 1° 2° or 3º ami
- 9. How do you know if a malenimide based reagent will conjugate to nitrogen or sulphur in an amino acid? но protein -protein SH NH2Match the unknowns with their correct class of organic compounds based on the given qualitative tests below. UNKNOWN 2% AGNO3 litmus test after NaOH ALCOHOLYSIS AMINOLYSIS HYDROXAMIC TEST burgundy solution burgundy solution burgundy solution A clear solution acidic clear solution clear solution white ppt white ppt clear solution clear solution bluish-red colored complex fruity odor fruity odor B clear solution acidic C white ppt acidic clear solution basic Unknown A I. ester v Unknown B II. amide v Unknown C III, acid anhydride v Unknown D IV. acid halidesynthesis of suocybin NH₂ -OH L-Tryptophan, 7 OH NH2 NH2 PsiD -CO₂ Tryptamine, 6 (PsiH) [O] NH2 NH₂ OH -OH HO PsiD PsiK -CO₂ H 4-hydroxy- ATP ADP H tryptamine, 8 Norbaeocystin, 9 H 4-hydroxy-L- Tryptophan, 11 SAM PsiM) SAH HN OH O=P. O=P-O HO PsiM PsiK OH ADP ATP Psilocin, 2 SAH SAM Psilocybin, 1 Baeocystin, 10
- The following three derivatives of succinimide are anticonvulsants and have found use in the treatment of epilepsy, particularly petit mal seizures. Ph Ph `N' `N' ČH3 ČH3 Methsuximide Ethosuximide Phensuximide Following is a synthesis of phensuximide. CN Ph CN Ph CN 1. NaOH, H2O 2. HC, Н20 NaOEt KCN Ph-CHO cOOEt H cOOEt NC COOEt 3. Нeat Ethyl cyanoacetate (A) (B) Benzaldehyde Ph Ph Ph CH;NH2 НООС СООН Et0oC COOEt `N' (C) (D) ČH3 Phensuximide Methsuximide is formed by a similar pathway to that shown for phensuximide. Draw the structure of the compound that reacts with ethyl cyanoacetate in the synthesis of methsuximide.Directions: Identify the type of IMFA for the following substances and answer the questions that follow. You may follow the examples above in answering the questions. Table 1-Substances and IMFA Types 1. CO 2. NH3 3. CCIA Critical Thinking Questions: 1. How do you determine the type of IMFA that in each of the given substances? OCcurs 2. Rank the strength of each compound based on IMFA. (1 = strongest, 2 = in between, 3 = weakest) Explain your answer. 1. %3D %3Didentify which has the lowest pka value. use aromatcity concepts to explain why.