In 1994 chemists at Texas A M University reported the synthesis
In 1994 chemists at Texas A&M University reported the synthesis of a non-naturally occurring amino acid:
a. To which naturally occurring amino acid is this compound most similar?
b. A tetrapeptide, phe-met-arg-phe—NH2, is synthesized in the brains of rats addicted to morphine and heroin. The TAMU scientists synthesized a similar tetrapeptide, with the synthetic amino acid above replacing one of the original amino acids. Draw a structure for the tetrapeptide containing the synthetic amino acid.
c. Indicate the chiral carbon atoms in the synthetic amino acid.
d. Draw the geometric isomers for this synthetic amino acid.
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