Amino Acids and Peptides. II. A One-Step Synthesis of Atropine and Other Related Alkaloids from dl-Phenylalanine 3α-Tropanyl Ester

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Atropine (VI), littorine (VII), apoatropine (IX), and related compounds have been synthesized by a one-step deamination reaction from dl-phenylalanine 3α-tropanyl ester (V). The amino ester (V) was obtained by coupling tropine with N-phthalyl-dl-phenylalanyl chloride (III) followed by hydrazinolysis with an equimolar amount of hydrazine hydrate.

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