Abstract:
:On the basis of the affinities at the alpha1a-, alpha1b- and alpha1d-adrenoceptors and the 5-HT1A receptor of a previous series of sixteen 2-[(2-phenoxyethyl)aminomethyl]-1,4-benzodioxanes ortho monosubstituted at the phenoxy moiety, a number of ortho disubstituted analogues were designed, synthesized in both the enantiomeric forms and tested in binding assays on the same receptors. The affinity values of the new compounds 1-11 were compared with those of the enantiomers of the 2,6-dimethoxyphenoxy analogue, the well-known alpha1 antagonist WB4101, and of the ortho monosubstituted derivatives, suggesting some distinctive aspects of the interaction of the phenoxy moiety, in particular with the alpha1a-AR and the 5-HT1A receptor, of the monosubstituted and the disubstituted compounds. A classical quantitative structure-activity relationship (Hansch) analysis was applied to the whole set of the S enantiomers of the ortho mono- and disubstituted WB4101 analogues (26 compounds), finding a very good correlation for the alpha1a affinity. For this latter, a significant parabolic relationship was also found with the volume of the two ortho substituents. Diametrically opposite, the same relationships for the 5-HT1A exhibit low or insignificant correlation coefficients.
journal_name
Eur J Med Chemjournal_title
European journal of medicinal chemistryauthors
Pallavicini M,Fumagalli L,Gobbi M,Bolchi C,Colleoni S,Moroni B,Pedretti A,Rusconi C,Vistoli G,Valoti Edoi
10.1016/j.ejmech.2006.04.004subject
Has Abstractpub_date
2006-09-01 00:00:00pages
1025-40issue
9eissn
0223-5234issn
1768-3254pii
S0223-5234(06)00150-4journal_volume
41pub_type
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