作者:David E. Nichols、Scott E. Snyder、Robert Oberlender、Michael P. Johnson、Xuemei Huang
DOI:10.1021/jm00105a043
日期:1991.1
3-dihydrobenzofuran-4-yl)-2-aminopropane (6a) and its 7-brominated analogue 6b, possessed activity comparable to their conformationally flexible counterparts 1-(2,5-dimethoxyphenyl)-2-aminopropane (3) and its 4-bromo derivative DOB (5), respectively. The results suggest that the dihydrofuran ring in 6a and 6b models the active conformation of the 5-methoxy groups in 3 and 5. Free energy of binding, derived
制备了两种致幻剂苯丙胺的2,3-二氢苯并呋喃类似物,并评估了其在区分大鼠酒石酸LSD(0.08 mg / kg)中的盐水的双杠杆药物歧视范例中的活性以及其置换[125I]- (R)-DOI [(125I]-(R)-1-(2,5-二甲氧基-4-碘苯基)-2-氨基丙烷)来自大鼠皮层匀浆5-HT2受体。化合物1-(5-甲氧基-2,3-二氢苯并呋喃-4-基)-2-氨基丙烷(6a)及其7-溴代类似物6b具有与其构象灵活的对应物1-(2,5-二甲氧基苯基)-2-氨基丙烷(3)及其4-溴衍生物DOB(5)。结果表明,在6a和6b中的二氢呋喃环模拟了3和5中5-甲氧基的活性构象。结合自由能来自放射性配体位移KA值,指出在任何一个系列中添加溴都会产生2.4-3.2 kcal / mol的结合能。基于溴原子的表面积,该值比基于疏水结合的预期值高2-3倍。因此,单独的对取代基的疏水性不能解释致幻活性的显着提高。