CYCLIC TAUTOMERS OF TRYPTAMINES AND TRYPTOPHANS. V1. FORMATION AND REACTIONS OF CYCLIC TAUTOMERS OF CYCLO-L-TRYPTOPHANYL-L-PROLINE.

DOI: 10.1016/S0040-4039(01)90521-0

Source and publish data:

Tetrahedron Letters p. 2565 - 2568 (1981)

Update date:2022-08-10

Topics:

Authors:

Hino, Tohru

Taniguchi, Mikio

Yamamoto, Ichiro

Yamaguchi, Keiichi

Nakagawa, Masako

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Article abstract of DOI:10.1016/S0040-4039(01)90521-0

Two stereoisomeric cyclic tautomers (5 and 6) of cyclo-L-tryptophanyl-L-proline whose stereochemistry was established by x-ray analysis, gave 5- and 6-hydroxytryptophanyl derivatives (10, 11 and 19) on the hydroxylation with lead tetraacetate in trifluoroacetic acid.

Full text of DOI:10.1016/S0040-4039(01)90521-0

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