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- propanal propanoic acid N-ethylpropanamide -HO- AA acidified KMN0, H;C NH2 NH CH3 H3C H3C BB H3C- DD HJ Ni он H;C propan-1-ol CC (ii) Name the type of chemical reaction for the formation of compound CC. Namakan jenis tindak balas kimia bagi penghasilan sebatian CC.envellum.ecollege.com/course.html?courseld3D16522631&OpenVellumHMAC=85a7baea4e7d7b9e1c025b928e35fe16#10001 I Review Constants | Periodic Table The compounds commonly known as "amino acids" are actually a-aminocarboxylic acids. What carbonyl compounds should be used to synthesize the two amino acids shown here using reductive amination? Part A CH3CH NH2 Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default. +) H 120 EXP. . i CONT. L. CA chemically modified guanidino group is present in cimetidine (Tagamet), a widely prescribed drug for the control of gastric acidity and peptic ulcers. Cimetidine reduces gastric acid secretion by inhibiting the interaction of histamine with gastric H2 receptors. In the development of this drug, a cyano group was added to the substituted guanidino group to alter its basicity. Do you expect this modified guanidino group to be more basic or less basic than the guanidino group of arginine? Explain.
- ) The correct name of the is: NH2 CH XOL NO₂ SO3H gc) 2-amino-3-methyl-5-nitro benzenesufonic acid ut) 1-amino-3-methyl-4-nitro-6-benzenesufonic acid ro) 6-amino-4-methi-3-nitrobenzenesufonic acid tb) 2-amino-4-methyl-5-nitrobenzenes ufonic acidWhat is the structure that best represents the following amino acid at pH = 10? wolzle H₂N NH₂ O A A HN H₂N B NH₂ i NH₂ OH H₂N C NH3 H₂N NH₂ D OH21-43 Give appropriate names for the following compounds: (а) (b) (с) CH;CH,CH,CH2 -C-ci Ph CH, CH,CH-C-N-Ph (d) (e) () H. CH3CH N-ċ-Ph CH3CH,-Č-0-Ph CH3CH 0-C-Ph (g) hoonon (h) (1) CH;CH,O OCH CH, (G) (k) (1) H,C CH- C-N(CH,CH3)2 H;C O.
- Covalent enzyme catalysis involves the formation of a transient covalent bond between an enzyme and its substrate Below is the general structure of a commonly encountered so-called acyl-enzyme intermediate Ent- NH OH+Ent Select amino acid residues from the table beliow that have side chains with the enzyme reactive groups indicated in the above reaction (if more than one, start with lowest numbered first. Amino acid No 3-detter code What is the chemical name of the acyl-enzyme intermediate compound (acylimidazole, anhydride, ester, Schif base, thioester? 2) 3 HN HO HO HO HO (5) 6 HN HD HO HN HO HO 03 15 HN HN HO HO HO HO 08 09 20 HOThe dynorphins are a group of opioid peptides that play an importantrole in changes in the brain associated with cocaine addiction. One ofthese peptides, dynorphin A, contains the following amino acidsequence: Tyr–Gly–Gly–Phe–Leu–Arg–Arg–Ile–Arg–Pro–Lys–Leu–Lys.Draw the amino acids and peptide fragments formed when dynorphin A is treated with each reagent or enzyme: (a) chymotrypsin; (b) trypsin; (c)carboxypeptidase; (d) C6H5N=C=S.CH,OCH,CI SnCl, CH,CI The chloromethylated polystyrene resin used for Merrifield solid-phase peptide synthesis is prepared by treatment of polystyrene with chloromethylmethyl ether and a Lewis acid catalyst. The reaction involves the following steps: 1. Reaction of the ether with the Lewis acid to form cation 1; 2. Electrophilic aromatic substitution to form resonance stzbilized cation 2: 3. Deprotonation yields aromatic ether 3: 4. Protonation to žorm protonated ether 4; 5. Displacement by chloride ion to form the final product Write out the mechanism on a separate sheet of paper and then draw the structure of the resonance contributors of the resonance stabilized cation 2. • Use Rl groups to indicate the points where the polymer repeats. The R group tool is located in the charges and lone pairs drop-down menu. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Separate resonance structures using the symbol from the…
- 83. Aliphatic amides 1. are prepared by heating the corresponding aliphatic armmonium carboxylate salt 2. will lost a-CO- group when treated wilth bromate(i) in an alkali 3. can be coverled into the corresponding acid by reacting with NANO HCI. 84. Uren (HN),CO) 1. is an amide because it contains the -C-NH, group 2. has a structure that contains the peptide link 3. reacts with NANO /HCI to give methanoic acidWhich of the following peptides is made from one of each of the following amino acids: glycine, serine, alanine and proline Select one: H H H H-N-C- -N- -он OH H2 H-N-E. OH H H-N-E- H2 -N-C -он H H. H-N- -ċ-N- -OH он OH HO20. An amino acid has an -OH side chain. What type of side chain could form hydrogen bonds with this side chain? a. -OH Ob. -SH Oc. -NH2 d. more than one choice is correct e. none of the above