1. 2-Methylacrylamide as a bioisoster of thiourea group for 1,3-dibenzylthioureido TRPV1 receptor antagonists.
- Author
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Park, Seol Rin, Kim, Juhyun, Lee, Sun Young, Park, Young-Ho, and Kim, Hee-Doo
- Subjects
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ACRYLAMIDE derivatives , *TRPV cation channels , *CHEMICAL inhibitors , *THIOUREA , *BIOISOSTERES , *SENSORY neurons - Abstract
In order to replace thiourea group with the more drug-like moiety for 1,3-dibenzylthioureas having TRPV1 antagonist activity, we introduced a set of functional groups between the two aromatic rings based on bioisosteric replacement. The synthesized bioisosteres of 1,3-dibenzylthioureas were tested for their antagonist activities on TRPV1 by 45 Ca 2+ -influx assay using neonatal rat cultured spinal sensory neurons. Among the tested 14 kinds of bioisosters, 2-methylacrylamide group was the best candidate to replace thiourea group. Compound 7c , 2-methylacrylamide analog of ATC-120, showed as potent as ATC-120 in its antagonist activity. In addition, 2-methylacrylamide analog 7e having vinyl moiety showed the most potent activity with 0.022 μM of IC 50 value, indicating that thiourea group of 1,3-dibenzylthioureas could be replaced to 2-methylacrylamide without loss of their potencies. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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