Question: 9) Propose a synthetic sequence for the dipeptide A-D-G (single-letter codes) starting from the free amino acids. Draw reaction equations with structural formulas of all

9) Propose a synthetic sequence for the dipeptide A-D-G (single-letter codes) starting from the free amino acids. Draw reaction equations with structural formulas of all organic reagents for the individual steps. Which protecting strategy of the side-chain functional group is appropriate? Please draw the mechanism of peptide bond formation

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