Synthesis of novel diazatricyclodecanes (DTDs). Effects of structural variation at the C3′ allyl end and at the phenyl ring of the cinnamyl chain on μ-receptor affinity and opioid antinociception
摘要:
Two series of analogues of 9-propionyl-10-cinnamyl-9,10-diazatricyclo[4.2.1.1(2,5)]decane (1a) and 2-propionyl-7-cinnamyl-2,7-diazatricyclo[4.4.0.0(3,8)]decane (2a), in which the cinnamyl moiety was replaced by various aralkenyl chains, 1b-1 and 2b-1, respectively, have been synthesized and evaluated for their ability to bind to the opioid mu-, delta- and kappa-receptors. The binding data indicated that compounds 1b,d,e,h and 2b,d,e,f,h,i showed a mu-affinity in the low nanomolar range with moderate or negligible affinity towards delta- and kappa-receptors. Selected DTDs, the pairs 1,2b,1,2e and 1,2h, were also evaluated for analgesic effect. In the hot plate test, only 1b given ip was found to have similar opioid antinociception and chronic tolerance as morphine. (C) 2003 Elsevier Ltd. All rights reserved.
Synthesis, biological evaluation and docking studies of a novel class of sulfur-bridged diazabicyclo[3.3.1]nonanes
作者:Gabriele Murineddu、Battistina Asproni、Paola Corona、Stefania Gessi、Stefania Merighi、Enrica Battistello、Chiara Sturaro、Girolamo Calò、Nicoletta Galeotti、Veronika Temml、Sonja Herdlinger、Daniela Schuster、Gerard A. Pinna
DOI:10.1016/j.bioorg.2020.104072
日期:2020.9
A small library of 3-thia-7,9-diazabicyclo[3.3.1]nonanes was synthesized and their opioid receptors affinity and selectivity evaluated. Among these novel sulfur-bridged compounds, the (E) 9-[3′-(3-chlorophenyl)-but-2′-en-1′-yl]-7-propionyl-3-thia-7,9-diazabicyclo[3.3.1]nonane 2i emerged as the derivative with the highest μ receptor affinity (Ki = 85 nM) and selectivity (Ki μ/δ = 58.8, Ki μ/κ > 117