mAChR antagonist 1 (compound 4a) is a mAChR antagonist with Ki values of 255 nM, 121 nM, 158 nM, and 255 nM for M1, M3, M4, and M5 subtype, respectively.
References:
[1]. Marlon Millard, et al. Design, synthesis and preclinical evaluation of muscarine receptor antagonists via a scaffold-hopping approach. Eur J Med Chem. 2023 Oct 21:262:115891.
















