Structure and solution conformation of the cytostatic cyclic tetrapeptide WF-3161, cyclo[L-leucyl-L-pipecolyl-L-(2-amino-8-oxo-9, 10-epoxydecanoyl)-D-phenylalanyl].

Abstract:

:The sequence and configuration of amino acids in the cytostatic cyclic tetrapeptide WF-3161 are established as cyclo(L-Leu-L-Pip-L-Aoe-D-Phe) where Pip = pipecolic acid and Aoe = 2-amino-8-oxo-9,10-epoxydecanoic acid. In chloroform, WF-3161 adopts a conformation with a possible gamma-turn between Leu NH and Aoe C = O and a cis amide bond between Leu and Pip. The torsion angles for this conformation are L-Aoe, phi, -95 degrees, psi, +85 degrees, omega, -155 degrees; D-Phe, phi, +120 degrees, psi, -80 degrees, omega, -175 degrees; L-Leu, phi, -145 degrees, psi, +35 degrees, omega, -10 degrees; L-Pip, phi, +20 degrees, psi, -135 degrees, omega, -170 degrees. The cis,trans,trans,trans amide bond sequence is related to the dimethyl sulfoxide conformation of chlamydocin, another cytostatic cyclic tetrapeptide.

journal_name

J Med Chem

authors

Kawai M,Pottorf RS,Rich DH

doi

10.1021/jm00161a046

subject

Has Abstract

pub_date

1986-11-01 00:00:00

pages

2409-11

issue

11

eissn

0022-2623

issn

1520-4804

journal_volume

29

pub_type

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