Synthesis and In vitro binding affinities of 1-azabicyclic compounds as muscarinic ligands
摘要:
Two series of compounds, 2 and 3, were synthesized and their binding affinities were evaluated for the human recombinant muscarinic M-1 receptor subtype expressed in CHO cells. Comparing their binding affinities for the NMS binding sites and the Oxo-M binding sites, they were assumed as agonists. In particular, compound 2e was a good ligand for the agonist binding sites with an IC50 of 23 nM, which represents over 1585 times stronger binding than for the antagonist binding sites. (C) 2001 Elsevier Science Ltd. All rights reserved.
Azabicyclic compounds, process for their preparation and pharmaceutical compositions containing them
申请人:BEECHAM GROUP PLC
公开号:EP0322182A2
公开(公告)日:1989-06-28
Novel compounds of formula (I), processes for their preparation, and their use as pharmaceutical agents are described:
in which p represents an integer of 2 to 4; r represents an integer of 1 or 2; s represents 0 or 1; and X represents a group
in which A₁ is oxygen or sulphur, one of A₂ and A₃ is CR₁ and the other is nitrogen or CR₂, or A₂ is oxygen or sulphur, A₁ is CH and A₃ is CR₁, where R₁ and R₂ are independently selected from hydrogen and C₁₋₂ alkyl, with the proviso that when r is 2, R₁ and R₂ are hydrogen or methyl.
Novel compounds of formula (I), a process for their preparation, and their use as pharmaceutical agents are described:
wherein R₁ represents
in which each of p and q independently represents an integer of 2 to 4, r represents an integer of 2 to 4, s represents 1 or 2 and t represents 0 or 1;
R₂ is a group OR₄, where R₄ is C₁₋₄ alkyl, C₂₋₄ alkenyl, C₂₋₄ alkynyl, a group OCOR₅ where R₅ is hydrogen or R₄, or a group NHR₆ or NR₇R₈ where R₆, R₇ and R₈ are independently C₁₋₂ alkyl; and
R₃ is hydrogen or C₁₋₄ alkyl, subject to the proviso that when R₂ is a group OCOR₅ or a group NHR₆, R₃ is C₁₋₄ alkyl.