微管蛋白在有丝分裂中发挥核心作用,并且是包括紫杉醇在内的多种抗癌药物的靶标。本文合成了两个独立家族的2,3-二氢喹唑啉-4(1 H )-酮和喹唑啉-4(3 H )-酮,总共包含57种化合物。针对广泛的人类癌细胞系(HT29 结肠癌、U87 和 SJ-G2 胶质母细胞瘤、MCF-7 乳腺癌、A2780 卵巢细胞、H460 肺癌、A431 皮肤细胞、Du145 前列腺细胞、BE2-C 神经母细胞瘤和 MIA 胰腺细胞)的筛选揭示了这些类似物是广谱细胞毒性化合物。特别值得注意的是,2-苯乙烯基喹唑啉-4(3 H )-一51、2- (4-羟基苯乙烯基)喹唑啉-4(3 H )-一63、2- (2-甲氧基苯乙烯基)喹唑啉-4(3 H )-一种64和 2-(3-甲氧基苯乙烯基)喹唑啉-4(3 H )-一种65和 2-(萘-1-基)-2,3-二氢喹唑啉-4(1 H )-一种39表现出亚μM效力生长抑制值。其中1-萘基39具有活性<50
DOI:
10.1039/d3md00600j
作为产物:
描述:
间羟基苯甲醛 、 2-氨基苯甲酰胺 在
bromine source immobilized on diethylenetriamine-functionalized Fe3O4 magnetic nanoparticles 作用下,
以
水 为溶剂,
反应 0.92h,
以98%的产率得到2-(3-hydroxyphenyl)-2,3-dihydroquinazolin-4(1H)-one
A Facile Microwave and SnCl2 Synthesis of 2,3-Dihydroquinazolin-4(1H)-ones
作者:Nicholas S. O'Brien、Adam McCluskey
DOI:10.1071/ch20101
日期:——
An elegantly simple, facile, and robust approach to a scaffold of biological importance, 2,3-dihydroquinazolin-4(1H)-ones, is reported. A catalytic 1 % SnCl2/microwave-mediated approach afforded access to pure material, collected by cooling and filtration after 20-min microwave irradiation at 120°C. A total of 41 analogues were prepared in isolated yields of 17–99 %. This process was highly tolerant
A simple, green and environmentally benign procedure was developed for the synthesis of 2,3-dihydro-2-phenylquinazolin-4(1H)-ones using catalytic amounts of succinimide-N-sulfonic acid via the cyclocondensation of 2-aminobenzamide with an aldehyde. The present methodology offers several advantages such as high yields, simple procedure, low cost, short reaction times, mild reaction conditions, and use of a reusable catalyst.
2,3-Dihydroquinazolin-4(1H)-one derivatives have been synthesized via one-pot reaction of isatoic anhydride, aromatic aldehyde, and ammonium acetate catalyzed by FeCl3/neutral Al2O3 in tert-butanol under reflux conditions. Inexpensive and easily available reagents, convenient work-up procedure, reusable catalyst, and moderate to good yield are the salient features of this protocol.
Facile and efficient protocols for C–C and C–N bond formation reactions using a superparamagnetic palladium complex as reusable catalyst
作者:Mohammad Ali Karimi Zarchi、Seyed Shahab Addin Darbandizadeh Mohammad Abadi
DOI:10.1007/s11164-019-03754-y
日期:2019.5
Abstract Facile and efficient protocols for some multicomponent coupling reactions such as the Suzuki reaction and synthesis of polyhydroquinoline and 2,3-dihydroquinazoline-4-(1H)-one derivatives using a superparamagnetic palladium complex as catalyst have been developed. Graphical abstract
12-tungstophosphoric acid supported on silica gel (PW/SiO2) exhibits excellent activity in the synthesis of 2,3-dihydroquinazolin-4(1 H )-ones by cyclocondensation reaction of 2-aminobenzamide with carbonylcompounds in water under reflux conditions. The desired products have been obtained in short reaction times in high yields. Our method has been successfully applied for both aldehydes and ketones (aromatic and aliphatic)
硅胶上负载的12-钨磷酸(PW / SiO 2)在回流条件下通过2-氨基苯甲酰胺与羰基化合物在水中的环缩合反应,在合成2,3-二氢喹唑啉-4(1 H )-酮中显示出优异的活性。 。在短的反应时间内以高收率获得了所需的产物。我们的方法已成功应用于醛和酮(芳族和脂族)。与现有方法相比,该方法的主要优点是易于回收和可重复使用的催化剂,易于处理以及避免使用有害的有机溶剂。