Pyrrolidine-constrained phenethylamines: The design of potent, selective, and pharmacologically efficacious dipeptidyl peptidase IV (DPP4) inhibitors from a lead-like screening hit.

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Backes BJ, Longenecker K, Hamilton GL, Stewart K, Lai C, Kopecka H, von Geldern TW, Madar DJ, Pei Z, Lubben TH, Zinker BA, Tian Z, Ballaron SJ, Stashko MA, Mika AK, Beno DW, Kempf-Grote AJ, Black-Schaefer C, Sham HL, Trevillyan JM

Pyrrolidine-constrained phenethylamines: The design of potent, selective, and pharmacologically efficacious dipeptidyl peptidase IV (DPP4) inhibitors from a lead-like screening hit.

Bioorg Med Chem Lett. 2007 Apr 1;17(7):2005-12. Epub 2007 Jan 19.

PubMed ID

17276063 [ View in PubMed

]

Abstract

A novel series of pyrrolidine-constrained phenethylamines were developed as dipeptidyl peptidase IV (DPP4) inhibitors for the treatment of type 2 diabetes. The cyclohexene ring of lead-like screening hit 5 was replaced with a pyrrolidine to enable parallel chemistry, and protein co-crystal structural data guided the optimization of N-substituents. Employing this strategy, a >400x improvement in potency over the initial hit was realized in rapid fashion. Optimized compounds are potent and selective inhibitors with excellent pharmacokinetic profiles. Compound 30 was efficacious in vivo, lowering blood glucose in ZDF rats that were allowed to feed freely on a mixed meal.

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Binding Properties

Drug	Target	Property	Measurement	pH	Temperature (°C)
(3R,4S)-1-{6-[3-(METHYLSULFONYL)PHENYL]PYRIMIDIN-4-YL}-4-(2,4,5-TRIFLUOROPHENYL)PYRROLIDIN-3-AMINE	Dipeptidyl peptidase 4	Ki (nM)	3.4	7.5	22	Details