What product would you expect to be formed in the reaction of phenylalanine with ethanol in the presence of hydrogen chloride? (Do not show the amino acid as a zwitterion, show the answer as a neutral amino acid). not show the amino acid as a zv What product would you expe Ph NH3 CH2CH3 Edit Drawing

Show how you could us the acetamidomalonate method to prepare the followig amino acids (a)Leucine (b)Tryptophan

Draw the structure of the tetrapeptide Asp-Arg-Val-Tyr. Please show the appropriate stereochemistry of the natural amino acids in the resulting peptide. Please draw all ionizable groups in their neutral form.

Give the sequence of the following tetrapeptide:

Pls help ASAP on both questions I HUMBLY REQUEST

Draw both enantiomers of each amino acid and label them as R or S: (a) phenylalanine; (b) methionine.

Identify the which molecules are natural amino acids (AA), unnatural AA, or othersubunits entirely.

Which of the structures below corresponds to the dipeptide cysteylananine? The parentamino acids are shown below. но H,C-c-8-o NH, но HS-CH, c-¿-o NH, alani ne cysteine но но но "H;N-c-C-N-c-&- ČH; H CH; A. B. CH, H CH, SH SH H,C O но нс о "H,N-c-E-N-c-&-o H CH; но C. "H,N-c-c-N-ċ-E-o SH SH O H "H,N--ċ-o-o-ċ- E. c-NH" 'H. ČH, SH D.

4: Draw structures from notations or notations from structures, for the following dipeptides. Look up in book for the structures of various amino acids and their names (and notations). (EOCQ 60) Hints for drawing a dipeptide from the specified amino acids. From the given symbols (Ser, Thr, etc), draw the structures for the amino acids in the specified order example, for Ser-Thr, draw Serine first and then Threonine). Then remove the OH from the first amin and one H (from the N atom) on the second amino acid. Then join the remaining fragments; that give the dipeptide formed. In these reactions, H2O is formed as a side product; but it is implied, and you have to show it in your answers. The following equation illustrates that. Here, R and R' are symbolic. In an actual question, you must the actual structures for the amino acids (Table 16.3 in the book). O H || | Н.N— CH— С-N-CH—С-ОН H,N-CH-C–OH + H,N-CH-Ċ–OH R' R. R' (H2O is a sid no need t Amino acid 2 dipeptide Amino acid 1 а. Cys-Ser…

Provide the product and determine L or D amino acid