Abstract:
:Indolopropellane 2 was reported to show almost no binding affinity to the δ opioid receptor (DOR) in spite of the fact that 2 has both the propellane fundamental skeleton (message part) with binding ability to the opioid receptors and a possible DOR address structure (indole moiety). We developed the working hypothesis that almost no binding affinity of 2 to the DOR would be derived from its possibly stable bent conformer. To enable the propellane skeleton to adopt an extended conformation which would reasonably interact with the DOR, quinolinopropellanes 3a-d were designed which had an additional pharmacophore, quinoline nitrogen. The calculated binding free energies of ligand-DOR complexes strongly supported our working hypothesis. The synthesized quinolinopropellane 3a was a selective DOR full agonist, confirming our working hypothesis and the results of in silico investigation.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Nagase H,Nakajima R,Yamamoto N,Hirayama S,Iwai T,Nemoto T,Gouda H,Hirono S,Fujii Hdoi
10.1016/j.bmcl.2014.04.098subject
Has Abstractpub_date
2014-07-01 00:00:00pages
2851-4issue
13eissn
0960-894Xissn
1464-3405pii
S0960-894X(14)00455-7journal_volume
24pub_type
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