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KSC-12-192 preferentially activates [[G protein|G-protein]] coupling over [[Arrestin beta 2|β-arrestin 2]] recruitment [[in vitro]], an intrinsic activity shared with many other KOR ligands developed to separate KOR-mediated analgesia from accompanying dysphoria.
KSC-12-192 preferentially activates [[G protein|G-protein]] coupling over [[Arrestin beta 2|β-arrestin 2]] recruitment [[in vitro]], an intrinsic activity shared with many other KOR ligands developed to separate KOR-mediated analgesia from accompanying dysphoria.


Compared with most of the known KOR G-protein biased agonists, KSC-12-192 and its parent compound [[ML138]] do not exhibit [[stereoisomerism]], are weaker [[Base (chemistry)|bases]], and do not share the heavily [[controlled substance|controlled]] backbones of [[Morphinan|L-morphinans]] or [[Salvinorin|salvinorins]].
Compared with most of the known KOR G-protein biased agonists, KSC-12-192 and its parent compound [[ML138]] do not exhibit [[stereoisomerism]].


Out of a range of tested compounds with the same substituted [[Triazole|triazole]] scaffold (see table), KSC-12-192 had the highest reported potency in vitro as a KOR agonist ([[EC50|EC<sub>50</sub>]] = 31nM<ref>{{Cite journal |last=Tan |first=Liang |last2=Yan |first2=Wenzhong |last3=McCorvy |first3=John D. |last4=Cheng |first4=Jianjun |date=2018-11-21 |title=Biased Ligands of G Protein-Coupled Receptors (GPCRs): Structure-Functional Selectivity Relationships (SFSRs) and Therapeutic Potential |url=https://pubmed.ncbi.nlm.nih.gov/29939744/ |journal=Journal of Medicinal Chemistry |volume=61 |issue=22 |pages=9841–9878 |doi=10.1021/acs.jmedchem.8b00435 |issn=1520-4804 |pmid=29939744}}</ref>).
Out of a range of tested compounds with the same substituted [[Triazole|triazole]] scaffold (see table), KSC-12-192 had the highest reported in vitro potency as a human KOR agonist ([[EC50|EC<sub>50</sub>]] = 31nM<ref>{{Cite journal |last=Tan |first=Liang |last2=Yan |first2=Wenzhong |last3=McCorvy |first3=John D. |last4=Cheng |first4=Jianjun |date=2018-11-21 |title=Biased Ligands of G Protein-Coupled Receptors (GPCRs): Structure-Functional Selectivity Relationships (SFSRs) and Therapeutic Potential |url=https://pubmed.ncbi.nlm.nih.gov/29939744/ |journal=Journal of Medicinal Chemistry |volume=61 |issue=22 |pages=9841–9878 |doi=10.1021/acs.jmedchem.8b00435 |issn=1520-4804 |pmid=29939744}}</ref>).
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Revision as of 11:53, 21 March 2023

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KSC-12-192
Clinical data
Other names"probe 1.1"
ATC code
  • None
Identifiers
  • 2-[4-(furan-2-ylmethyl)-5-[[4-methyl-3-(trifluoromethyl)phenyl]methylsulfanyl]-1,2,4-triazol-3-yl]pyridine
PubChem CID
ChemSpider
ChEMBL
Chemical and physical data
FormulaC21H17F3N4OS
Molar mass430.45 g·mol−1
3D model (JSmol)
  • CC1=C(C=C(C=C1)CSC2=NN=C(N2CC3=CC=CO3)C4=CC=CC=N4)C(F)(F)F
  • InChI=1S/C21H17F3N4OS/c1-14-7-8-15(11-17(14)21(22,23)24)13-30-20-27-26-19(18-6-2-3-9-25-18)28(20)12-16-5-4-10-29-16/h2-11H,12-13H2,1H3
  • Key:OQJGZGAYSCWFCK-UHFFFAOYSA-N

KSC-12-192 is a drug that is used in scientific research to study the κ-opioid receptor, where it acts as a biased agonist.[1]

KSC-12-192 preferentially activates G-protein coupling over β-arrestin 2 recruitment in vitro, an intrinsic activity shared with many other KOR ligands developed to separate KOR-mediated analgesia from accompanying dysphoria.

Compared with most of the known KOR G-protein biased agonists, KSC-12-192 and its parent compound ML138 do not exhibit stereoisomerism.

Out of a range of tested compounds with the same substituted triazole scaffold (see table), KSC-12-192 had the highest reported in vitro potency as a human KOR agonist (EC50 = 31nM[2]).

Scaffold Identifiers X R1 R2 R3
KSC-12-192 probe 1.1 O H CH3 CF3
ML138 KSC-5-240 probe 1 O H Cl Cl
KSC-12-193 probe 1.3 S H CH3 CF3
KSC-5-247G S H Cl Cl
KSC-12-238-B5 probe 1.4 O CH3 CH3 CF3
KSC-12-238-B4 O CH3 Cl Cl

See also

References

  1. ^ Zhou, Lei; Lovell, Kimberly M.; Frankowski, Kevin J.; Slauson, Stephen R.; Phillips, Angela M.; Streicher, John M.; Stahl, Edward; Schmid, Cullen L.; Hodder, Peter; Madoux, Franck; Cameron, Michael D.; Prisinzano, Thomas E.; Aubé, Jeffrey; Bohn, Laura M. (2013-12-20). "Development of functionally selective, small molecule agonists at kappa opioid receptors". The Journal of Biological Chemistry. 288 (51): 36703–36716. doi:10.1074/jbc.M113.504381. ISSN 1083-351X. PMC 3868780. PMID 24187130.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  2. ^ Tan, Liang; Yan, Wenzhong; McCorvy, John D.; Cheng, Jianjun (2018-11-21). "Biased Ligands of G Protein-Coupled Receptors (GPCRs): Structure-Functional Selectivity Relationships (SFSRs) and Therapeutic Potential". Journal of Medicinal Chemistry. 61 (22): 9841–9878. doi:10.1021/acs.jmedchem.8b00435. ISSN 1520-4804. PMID 29939744.