Chiral analogues of (+)-cyclazosin as potent α1B-adrenoceptor selective antagonist
作者:Gianni Sagratini、Michela Buccioni、Gabriella Marucci、Elena Poggesi、Matthew Skorski、Stefano Costanzi、Dario Giardinà
DOI:10.1016/j.bmc.2018.05.023
日期:2018.7
or amine groups, namely (−)-2, (+)-3, (−)-4–(−)-8, (+)-9. Moreover, we studied the activity of some their opposite enantiomers, namely (−)-1, (−)-3, (+)-6, and (−)-9, to evaluate the influence of stereochemistry on selectivity. The benzyloxycarbonyl and methyl (4aS,8aR) analogues (+)-3 and (−)-6 improved in a significant way the α1B selectivity of the progenitor compound: 4 and 14 time vs. the α1D subtype
(+) - Cyclazosin [(+) - 1]是α的最选择性拮抗剂之一1B -肾上腺素能受体亚型(选择性比率,α 1B /α 1A = 13,α 1B /α 1D = 38-39)。为了提高选择性,我们合成和药理学上研究针对α的阻断活性1的几个纯手性类似物(+)的肾上腺素能受体-配cyclazosin在羰基或胺基团,即不同的取代基( - ) - 2,(+) - 3-,(−)-4 – (−)-8,(+)-9。此外,我们研究了一些相反的对映异构体(-)的活性-1,(-)-3,(+)-6和(-)-9来评估立体化学对选择性的影响。苄氧羰基和甲基(4a S,8a R)类似物(+)-3和(-)-6以显着方式提高了前体化合物的α1B选择性:与α1D亚型和35和35相比,分别为4和14倍。分别是α1A亚型的77倍。该研究证实了疏水性的重要性CIS建立相互作用与α这些分子的-octahydroqu