Design and Synthesis of Novel Positive Allosteric Modulators of α7 Nicotinic Acetylcholine Receptors with the Ability To Rescue Auditory Gating Deficit in Mice.

Abstract:

:A series of novel thiazolo[4,5- d]pyrimidin-7(6 H)-ones (3aa-3eq) were designed, synthesized, and evaluated as the type I positive allosteric modulators of human α7 nAChR expressed in Xenopus ooctyes by a two-electrode voltage clamp. The structure-activity relationship analysis identified the compound 3ea as a potent and efficacious PAM with the maximum activation effect of the α7 current of over 1633% in the presence of acetylcholine (100 μM) and an EC50 = 1.26 μM. It is highly specific to α7 nAChR over other subtypes of nAChR, 5-HT3A, NMDA, and GABAA receptors. Compound 3ea showed an elimination half-life of 10.8 ± 1.5 h for 3 mg/kg, i.v., and 7.4 ± 1.1 h for 60 mg/kg, i.g. in rat. It also exhibited sufficient blood-brain barrier penetration with no significant effect on hERG channel. Most importantly, compound 3ea dose-dependently (0.1-1 mg/kg, i.p.) reversed the prepulse inhibition deficit induced by MK-801 in the mouse schizophrenia model.

journal_name

J Med Chem

authors

Li Y,Sun L,Yang T,Jiao W,Tang J,Huang X,Huang Z,Meng Y,Luo L,Wang X,Bian X,Zhang F,Wang K,Sun Q

doi

10.1021/acs.jmedchem.7b01492

subject

Has Abstract

pub_date

2019-01-10 00:00:00

pages

159-173

issue

1

eissn

0022-2623

issn

1520-4804

journal_volume

62

pub_type

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