Stereospecific high-affinity TRPV1 antagonists: chiral N-(2-benzyl-3-pivaloyloxypropyl) 2-[4-(methylsulfonylamino)phenyl]propionamide analogues.

Abstract:

:Previously, we reported the thiourea antagonists 2a and 2b as potent and high affinity TRPV1 antagonists. For further optimization of the lead compounds, a series of their amide and alpha-substituted amide surrogates were investigated and novel chiral N-(2-benzyl-3-pivaloyloxypropyl) 2-[4-(methylsulfonylamino)phenyl]propionamide analogues were characterized as potent and stereospecific rTRPV1 antagonists. In particular, compounds 72 and 73 displayed high binding affinities, with K i values of 4.12 and 1.83 nM and potent antagonism with K i values of 0.58 and 5.2 nM, respectively, in rTRPV1/CHO cells. These values are comparable or more potent than those of 5-iodoRTX under the same assay conditions. A distinctive binding model that includes two hydrophobic pockets is proposed for this series of compounds based on docking studies of 57 and 72 with a homology model of the TM3/4 region of TRPV1.

journal_name

J Med Chem

authors

Ryu H,Jin MK,Kim SY,Choi HK,Kang SU,Kang DW,Lee J,Pearce LV,Pavlyukovets VA,Morgan MA,Tran R,Toth A,Lundberg DJ,Blumberg PM

doi

10.1021/jm701049p

subject

Has Abstract

pub_date

2008-01-10 00:00:00

pages

57-67

issue

1

eissn

0022-2623

issn

1520-4804

journal_volume

51

pub_type

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