Abstract In response to the current pandemic caused by the novel SARS-CoV-2, we design new compounds based on Lopinavir structure as an FDA-approved antiviral agent which is currently under more evaluation in clinical trials for COVID-19 patients. This is the first example of the preparation of Lopinavir isosteres from the main core of Lopinavir conducted to various heterocyclic fragments. It is proposed
抽象的 针对当前由新型 SARS-CoV-2 引起的大流行,我们设计了基于洛匹那韦结构的新化合物作为 FDA 批准的抗病毒药物,目前正在针对 COVID-19 患者的临床试验中进行更多评估。这是从洛匹那韦主核到各种杂环片段制备洛匹那韦电子等排体的第一个例子。提出主要蛋白酶抑制剂在冠状病毒的循环寿命中发挥重要作用。因此,通过分子对接方法研究了合成化合物的蛋白酶抑制作用。所有这 10 个分子都显示出良好的对接分数。分子动力学 (MD) 模拟也证实了 Mpro 活性位点中最佳设计的化合物的稳定性。 拉马斯瓦米·萨尔马 (Ramaswamy H. Sarma) 通讯
Synthesis of [1]Benzopyrano[4,3-<i>b</i>]pyrrol-4(1<i>H</i>)-ones from 4-Chlorocoumarin
作者:Ángel Alberola、Rocío Álvaro、José M. Andrés、Blanca Calvo、Alfonso González
DOI:10.1055/s-1994-25459
日期:——
4-N-(Acylmethyl)aminocoumarins or their ketal derivatives were prepared from 4-chlorocoumarin and α-amino ketones (chlorohydrates or ketal derivatives) in ethanol/triethylamine media. Their subsequent treatment in acidic or basic media readily led to [1] benzopyrano[4,3-b] pyrrol-4(1H)-ones.
Ph3P-catalyzed [3 + 2] cycloaddition reaction of sulfamate-derived cyclic;mines with allenoate has been developed, affording sulfamate-fused dihydropyrroles under very mild conditions in high yields. Using amino acid-based bifunctional phosphine as chiral catalyst, its asymmetric variant provided the corresponding products in good yields with moderate to excellent enantiomeric excesses (up to 91% yield and up to 98% ee). Subsequent transformations of the heterocyclic products gave various pharmaceutically attractive compounds.
Navarro, Rocio Alvaro; Bleye, Luis Calvo; Gonzalez-Ortega, Alfonso, Heterocycles, 2001, vol. 55, # 12, p. 2369 - 2386
作者:Navarro, Rocio Alvaro、Bleye, Luis Calvo、Gonzalez-Ortega, Alfonso、Sanudo Ruiz
DOI:——
日期:——
Synthesis of [1]Benzopyrano[4,3-b]pyrrol-4(1H)-ones from 4-Chloro-3-formylcoumarin
作者:Angel Alberola、Luis Calvo、Alfonso González-Ortega、Alfonso P. Encabo、M. Carmen Sañudo
DOI:10.1055/s-2001-17696
日期:——
2-Functionalized [1]benzopyrano[4,3-b]pyrrol-4(1H)-ones were obtained by the Fischer-Fink reaction starting from 4-chloro-3-formylcoumarin and different α-amino derivatives (e.g. glycinonitriles, ethyl glycinates and α-amino ketones). In general limitations to the synthetic method arise when α-amino derivatives with very reactive functions were used (e.g. carboxaldehyde groups or their acetal derivatives) leading to Knorr type reactions, or when they contain relatively inactive methylenes (e.g. carboxamide groups) which failed to complete the cyclization process.