[Solved] Which of the Following Tripeptides Is Formed When Alanine Is

Question 90
Multiple Choice

Which of the following tripeptides is formed when alanine is treated with (Boc)2O and proline is treated with benzyl alcohol/acid first and the resulting intermediates are reacted in the presence of DCC followed by treatment with aqueous NaOH. The dipeptide is then reacted with the benzyl ester of leucine in the presence of DCC followed by treatment with trifluoroacetic acid and then aqueous NaOH?

A) Ala-Pro-Leu
B) Pro-Ala-Leu
C) Leu-Ala-Pro
D) Pro-Leu-Ala
E) all of these

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