Synthesis, Absolute Configuration, and Biological Profile of the Enantiomers of <i>trans</i>-[2-(2,6-Dimethoxyphenoxy)ethyl][(3-<i>p</i>-tolyl-2,3-dihydro-1,4- benzodioxin-2-yl)methyl]amine (Mephendioxan), a Potent Competitive α<sub>1A</sub>-Adrenoreceptor Antagonist
作者:Wilma Quaglia、Maria Pigini、Seyed K. Tayebati、Alessandro Piergentili、Mario Giannella、Amedeo Leonardi、Carlo Taddei、Carlo Melchiorre
DOI:10.1021/jm960069a
日期:1996.1.1
enantiomers of 2 with that of (2S,3S)-3-methyl-2-phenyl-1,4-benzodioxane allowed the assignment of the 2S,3S configuration to the (-)-enantiomer of 2 and of the 2R,3R configuration to the other enantiomer. The binding profile of the enantiomers of 2 was assessed at alpha 1, alpha 2, D2, and 5-HT1A receptors, in comparison to WB 4101 (1), 5-methylurapidil, and (+)-niguldipine. In addition, the two enantiomers
反-[2-(2,6-二甲氧基苯氧基)乙基] [(3-对甲苯基-2,3-二氢-1,4-苯并二恶英-2-基)甲基]胺的对映异构体(美芬二恶烷,2)是由手性反式-3-对甲苯基-2,3-二氢-1,4-苯并二恶英-2-羧酸[(+)-3和(-)-3]合成,而这些反过来是通过拆分(R)-和(S)-α-甲基苄胺的外消旋酸。比较2的对映体与(2S,3S)-3-甲基-2-苯基-1,4-苯并二恶烷的CD光谱,可以将2S,3S构型分配给2和3的(-)-对映体。 2R,3R构型与其他对映异构体的关系。与WB 4101(1),5-甲基尿嘧啶和(+)-尼古地平相比,在α1,α2,D2和5-HT1A受体处评估2的对映体的结合情况。此外,研究了两种对映体的天然和克隆的α1-肾上腺素受体亚型。在功能和结合试验中,(-)-2在α1-肾上腺素受体亚型上的效力是(+)-对映异构体的10-30倍。相对于α1b和α1d亚型,它对α1A