allosteric antagonist

https://doi.org/10.1351/goldbook.12616
Compound that binds to a receptor at a site separate from, but actively coupled to, that of the endogenous agonist to reduce actively receptor signals.
Note: The terms "allosteric antagonist" and "noncompetitive antagonist" are often synonymous but not necessarily so.
Source:
PAC, 2013, 85, 1725. (Glossary of terms used in medicinal chemistry. Part II (IUPAC Recommendations 2013)) on page 1726 [Terms] [Paper]