Synthesis, crystal structures and anti-inflammatory activity of fluorine-substituted 1,4,5,6-tetrahydrobenzo[<i>h</i>]quinazolin-2-amine derivatives
作者:Yue Sun、Zhongfei Gao、Chunhua Wang、Guige Hou
DOI:10.1107/s2053229619010118
日期:2019.8.1
6‐tetrahydrobenzo[h]quinazolin‐2‐amine (BQA) derivatives, namely 2‐amino‐4‐(2‐fluorophenyl)‐9‐methoxy‐1,4,5,6‐tetrahydrobenzo[h]quinazolin‐3‐ium chloride, (8), and 2‐amino‐4‐(4‐fluorophenyl)‐9‐methoxy‐1,4,5,6‐tetrahydrobenzo[h]quinazolin‐3‐ium chloride, (9), both C19H19FN3O+·Cl−, were generated by Michael addition reactions between guanidine hydrochloride and the α,β‐unsaturated ketones (E)‐2‐(2‐fluorobenzylidene)‐7‐methoxy‐3
两个氟取代的1,4,5,6-四氢苯并[ h ]喹唑啉-2-胺(BQA)衍生物,即2-氨基-4-(2-氟苯基)-9-甲氧基-1,4,5,6 -四氢苯并[ h ]喹唑啉-3-氯化铵,(8)和2-氨基-4-(4-氟苯基)-9-甲氧基-1,4,5,6-四氢苯并[ h ]喹唑啉-3-鎓酰氯,(9)时,C 19 ħ 19 FN 3 ö + ·氯- ,通过(盐酸胍和α,β不饱和酮之间的迈克尔加成反应所产生的ë)-2-(2-氟苄基)-7-甲氧基-3,4-二氢萘-1(2 H)-one,C 18 H15 FO 2,(6)和(E)-2-(4-氟亚苄基)-7-甲氧基-3,4-二氢萘-1(2 H)-1 ,(7)。由于α,β-不饱和酮(6)或(7)的两面均可被胍攻击,因此我们在(8)和(9)中获得了一对异构体。X射线单晶衍射表明,每个异构体都有一个手性碳原子,并且(8)和(9)都在非手性空间群P 2 1 / c中结晶