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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Am+Chem+Soc
2015 ; 137
(8
): 2996-3003
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Design, synthesis, and protein crystallography of biaryltriazoles as potent
tautomerase inhibitors of macrophage migration inhibitory factor
#MMPMID25697265
Dziedzic P
; Cisneros JA
; Robertson MJ
; Hare AA
; Danford NE
; Baxter RH
; Jorgensen WL
J Am Chem Soc
2015[Mar]; 137
(8
): 2996-3003
PMID25697265
show ga
Optimization is reported for biaryltriazoles as inhibitors of the tautomerase
activity of human macrophage migration inhibitory factor (MIF), a proinflammatory
cytokine associated with numerous inflammatory diseases and cancer. A combined
approach was taken featuring organic synthesis, enzymatic assaying,
crystallography, and modeling including free-energy perturbation (FEP)
calculations. X-ray crystal structures for 3a and 3b bound to MIF are reported
and provided a basis for the modeling efforts. The accommodation of the
inhibitors in the binding site is striking with multiple hydrogen bonds and
aryl-aryl interactions. Additional modeling encouraged pursuit of
5-phenoxyquinolinyl analogues, which led to the very potent compound 3s. Activity
was further enhanced by addition of a fluorine atom adjacent to the phenolic
hydroxyl group as in 3w, 3z, 3aa, and 3bb to strengthen a key hydrogen bond. It
is also shown that physical properties of the compounds can be modulated by
variation of solvent-exposed substituents. Several of the compounds are likely
the most potent known MIF tautomerase inhibitors; the most active ones are more
than 1000-fold more active than the well-studied (R)-ISO-1 and more than 200-fold
more active than the chromen-4-one Orita-13.