<i>Retracted:</i>
Effective and Green One‐Pot Multicomponent Synthesis of Novel Derivatives of 4
<i>H</i>
‐Pyrans in the Presence of Hexamethylenetetramine as Catalyst in Water Medium
作者:Maysam Habibi、Azizollah Habibi、Saber Hakimi Nasab、Hadi Dolati、Seyedeh Mahbobeh Mahdavi
DOI:10.1002/jhet.2781
日期:2017.5
Hexamethylenetetramine (HMTA) catalyzes synthesis of new polyfunctionalized 4H‐pyrans by reaction of aromatic aldehyde, malononitrile, and β‐keto esters via one‐pot three‐component procedure in water medium. Addition of reactants was performed by two methods led to achieve similar results. Using HMTA in catalytic amount not only represents the economic face of the reaction, but also due to the use
Effective and Green One-Pot Multicomponent Synthesis of Novel Derivatives of 4<i>H</i>-Pyrans in the Presence of Hexamethylenetetramine as Catalyst in Water Medium
作者:Maysam Habibi、Azizollah Habibi、Saber Hakimi Nasab、Hadi Dolati、Seyedeh Mahbobeh Mahdavi
DOI:10.1002/jhet.2748
日期:2017.3
Hexamethylenetetramine catalyzes synthesis of new polyfunctionalized 4H‐pyrans by the reaction of aromatic aldehyde, malononitrile, and β‐keto esters via one‐pot three‐component procedure in water medium. Addition of reactants was performed by two methods led to achieve similar results. Using hexamethylenetetramine in catalytic amount not only represents the economic face of the reaction but also due
六亚甲基四胺通过一锅三组分程序在水介质中通过芳族醛,丙二腈和β-酮酸酯的反应催化新的多官能化4 H-吡喃的合成。通过两种方法进行反应物的添加导致获得相似的结果。使用催化量的六亚甲基四胺不仅代表了反应的经济面,而且由于使用了水,因此组织了绿色安全的反应条件。因此,当前的策略提供了高生产率,方便操作和环境友好的优点。所有产物的结构均通过元素分析,IR,1 H NMR和13 C NMR光谱证实。
New tacrine-derived AChE/BuChE inhibitors: Synthesis and biological evaluation of 5-amino-2-phenyl-4H-pyrano[2,3-b]quinoline-3-carboxylates
series of poly-functionalized tacrine-derived compounds namely 5-amino-2-phenyl-4H-pyrano[2,3-b]quinoline-3-carboxylates were designed and synthesized as cholinesterases inhibitors. The in vitro inhibition assay against AChE and BuChE demonstrated that most of compounds had potent AChE inhibitory with reserving potential of BuChE inhibition. Among them, compound 6i bearing a 4-(3-bromophenyl) moiety showed
设计并合成了一系列多官能化他克林衍生的化合物,即5-氨基-2-苯基-4 H-吡喃并[2,3 - b ]喹啉-3-羧酸盐,它们是胆碱酯酶抑制剂。体外对AChE和BuChE的抑制试验表明,大多数化合物具有有效的AChE抑制作用,并保留BuChE抑制作用。其中,带有4-(3-溴苯基)部分的化合物6i对AChE / BuChE表现出最强的活性(IC 50值分别为0.069和1.35μM)。6i的抗AChE活性是他克林的5倍。SAR研究表明,邻位或间位的氯/溴取代基 4-苯环的位置可以提高抗胆碱酯酶的活性。