Fused Piperidines as a Novel Class of Potent and Orally Available Transient Receptor Potential Melastatin Type 8 (TRPM8) Antagonists
作者:Nuria A. Tamayo、Yunxin Bo、Vijay Gore、Vu Ma、Nobuko Nishimura、Phi Tang、Hong Deng、Lana Klionsky、Sonya G. Lehto、Weiya Wang、Brad Youngblood、Jiyun Chen、Tiffany L. Correll、Michael D. Bartberger、Narender R. Gavva、Mark H. Norman
DOI:10.1021/jm2013634
日期:2012.2.23
The transient receptor potential melastatin type 8 (TRPM8) is a nonselective cation channel primarily expressed in a subpopulation of sensory neurons that can be activated by a wide range of stimuli, including menthol, icilin, and cold temperatures (< 25 degrees C). Antagonism of TRPM8 is currently under investigation as a new approach for the treatment of pain. As a result of our screening efforts, we identified tetrahydrothienopyridine 4 as an inhibitor of icilin-induced calcium influx in CHO cells expressing recombinant rat TRPM8. Exploration of the structure-activity relationships of 4 led to the identification of a potent and orally bioavailable TRPM8 antagonist, tetrahydroisoquinoline 87. Compound 87 demonstrated target coverage in vivo after oral administration in a rat pharmacodynamic model measuring the prevention of icilin-induced wet-dog shakes (WDS).