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Updated: Jul 13, 2026

Methods for the Discovery of Novel Compounds Modulating a Gamma-Aminobutyric Acid Receptor Type A Neurotransmission
Published on: August 16, 2018
Alpha2-adrenoreceptors profile modulation. 3.1 (R)-(+)-m-nitrobiphenyline, a new efficient and alpha2C-subtype
Pierre-Antoine Crassous1, Claudia Cardinaletti, Antonio Carrieri
1Dipartimento di Scienze Chimiche, Università degli Studi di Camerino, Via S. Agostino 1, 62032 Camerino, Italy.
Abstract:
To assess the stereochemical requirements for efficient alpha2C-adrenoreceptor activation, the enantiomeric forms of m-nitrobiphenyline [(+/-)-5] were prepared and tested on cells expressing the human alpha2-adrenoreceptor subtypes. The importance of chirality was confirmed, since the enantiomer (R)-(+)-5 was much more efficient than (S)-(-)-5 in producing alpha2C-activation. Surprising reversal of enantioselectivity was observed with respect to structurally similar biphenyline [(+/-)-1] whose (S)-(-)-form proved the preferred alpha2C-configuration.
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