具有4 H-吡喃并[2,3- d ]嘧啶作为潜在分枝杆菌结核蛋白酪氨酸磷酸酶B抑制剂的1,2,3-1 H-三唑的合成,生物学评估和分子对接研究
摘要:
由取代的苯甲醛,丙二腈和乙酰乙酸乙酯在三组分反应中合成了一些杂环,即2-氨基-4 H-吡喃-3-腈。通过在浓硫酸作为催化剂的存在下与乙酸酐进行闭环反应,这些杂环随后被转化为4H-吡喃并[2,3- d ]嘧啶环。在无水碳酸钾存在下,使用炔丙基溴在干燥的丙酮中,进行嘧啶-4-酮环上内酰胺NH键的连续烷基化反应。3-炔丙基-4H-吡喃并[2,3- d ]嘧啶化合物的点击化学已通过与四-O-乙酰基-α- d反应而完成-使用金属-有机骨架[受电子邮件保护]作为无水乙醇中的催化剂的吡喃葡萄糖基叠氮化物。筛选所有合成的1 H- 1,2,3-三唑8a-y的体外结核分枝杆菌蛋白酪氨酸磷酸酶B(MtbPtpB)抑制作用。活性最高的化合物8v,8x和8y的动力学研究表明,它们对MtbPtpB酶具有竞争性抑制作用。详细的结构-活性关系(SAR)的体外和计算机模拟研究表明,Arg63氨基酸与阴离子型对羟基的相互作用是通过
Tetramethylguanidine-[bmim][BF4]. An Efficient and Recyclable Catalytic System for One-Pot Synthesis of 4H-Pyrans
作者:Yanqing Peng、Gonghua Song、Feifei Huang
DOI:10.1007/s00706-004-0270-y
日期:2005.5
A clean and efficient method for the synthesis of 4 H -pyran derivatives through the one-pot condensation of aromatic aldehydes, malononitriles, and β-dicarbonyl compounds, using guanidine base tetramethylguanidine in [ bmim ][BF4] ionic liquid as a recyclable catalytic system, was described.
Synthesis, biological evaluation and molecular docking study of 1,2,3-1H-triazoles having 4H-pyrano[2,3-d]pyrimidine as potential Mycobacterium tuberculosis protein tyrosine phosphatase B inhibitors
作者:Nguyen Dinh Thanh、Do Son Hai、Nguyen Thi Thu Ha、Do Tien Tung、Cao Thi Le、Hoang Thi Kim Van、Vu Ngoc Toan、Duong Ngoc Toan、Le Hai Dang
DOI:10.1016/j.bmcl.2018.12.009
日期:2019.1
2-amino-4H-pyran-3-carbonitriles, were synthesized in a three-componentreaction from substituted benzaldehydes, malononitrile, and ethyl acetoacetate. These heterocycles have been converted subsequently into 4H-pyrano[2,3-d]pyrimidine ring by ring-closing reaction with acetic anhydride in the presence of the concentrated sulfuric acid as catalyst. The successive alkylation reaction of lactam NH bond on pyrimidine-4-one
由取代的苯甲醛,丙二腈和乙酰乙酸乙酯在三组分反应中合成了一些杂环,即2-氨基-4 H-吡喃-3-腈。通过在浓硫酸作为催化剂的存在下与乙酸酐进行闭环反应,这些杂环随后被转化为4H-吡喃并[2,3- d ]嘧啶环。在无水碳酸钾存在下,使用炔丙基溴在干燥的丙酮中,进行嘧啶-4-酮环上内酰胺NH键的连续烷基化反应。3-炔丙基-4H-吡喃并[2,3- d ]嘧啶化合物的点击化学已通过与四-O-乙酰基-α- d反应而完成-使用金属-有机骨架[受电子邮件保护]作为无水乙醇中的催化剂的吡喃葡萄糖基叠氮化物。筛选所有合成的1 H- 1,2,3-三唑8a-y的体外结核分枝杆菌蛋白酪氨酸磷酸酶B(MtbPtpB)抑制作用。活性最高的化合物8v,8x和8y的动力学研究表明,它们对MtbPtpB酶具有竞争性抑制作用。详细的结构-活性关系(SAR)的体外和计算机模拟研究表明,Arg63氨基酸与阴离子型对羟基的相互作用是通过
Synthesis of novel multi-OH functionalized ionic liquid and its application as dual catalyst-solvent for the one-pot synthesis 4H-pyrans
multi-OH functionalizedionicliquid was synthesized. [TEA][HPS] was characterized by 1HNMR, 13CNMR, FT-IR and elemental analysis. In addition to structural study, some physical properties (such as TGA, solubility, conductivity, pH, density and viscosity) of new ionicliquid were determined. The performance of [TEA][HPS] ionicliquid as catalyst and solvent was investigated for the one-potsynthesis of 4H-pyrans
N-propargylation reaction of substituted 4H-pyrano[2,3-d]pyrimidine derivatives under conventional, ultrasound- and microwave-assisted conditions
作者:Do Son Hai、Nguyen Thi Thu Ha、Do Tien Tung、Cao Thi Le、Hoang Huu Anh、Vu Ngoc Toan、Hoang Thi Kim Van、Duong Ngoc Toan、Nguyen Thi Kim Giang、Nguyen Thi Thu Huong、Nguyen Dinh Thanh
DOI:10.1007/s11696-022-02213-0
日期:2022.8
substituted 4H-pyrano[2,3-d]pyrimidines were synthesized from corresponding substituted 4H-pyrans by ring-closing reaction with acetic anhydride or aceticacid in the presence of trifluoroacetic acid as catalyst. The successive alkylation reaction of lactam N–H bond on pyrimidine-4-one ring was carried out using propargylic bromide in dry acetonitrile in the presence of anhydrous potassium carbonate. Three
以相应的取代4 H-吡喃为原料,以三氟乙酸为催化剂,与乙酸酐或乙酸进行闭环反应,合成了一系列取代的4 H-吡喃并[2,3- d ]嘧啶。在无水碳酸钾存在下,使用炔丙基溴在无水乙腈中进行了嘧啶-4-环上内酰胺 N-H 键的连续烷基化反应。为此目的应用了三个程序,包括功率为 100 W 的 MW 辅助加热条件、50°C 水浴中的常规加热条件和 50°C 超声辅助加热条件下。无水乙腈用作反应溶剂。N -propargyl-4 H的高产率得到-吡喃并[2,3- d ]嘧啶衍生物。化合物6a的单晶X射线结构已被记录下来,该研究有助于确定合成的4 H-吡喃并[2,3 - d ]嘧啶6a - 6p的N-炔丙基衍生物的结构。
Heterogenization of Homogeneous Catalyst: An Improved Strategy for an Efficient Synthesis of Highly Substituted 4H-Pyran Scaffolds in Aqueous Based Media
作者:S. N. Shringare、K. R. Kadam、G. R. Pandhare、V. D. Murade、A. S. Waghmare、P. N. Kamble、N. R. Kamble、D. S. Wankhede
DOI:10.1007/s10562-023-04455-3
日期:2024.5
3-disulfonic acid as an active catalytic material over the surface of micro-sized silica. The synthesis, structure, purity, thermalstability and acidstrength of the newly synthesized catalytic material were confirmed by appropriate analytical techniques such as solid-state CP-MAS 13C-NMR, CP-MAS 29Si-NMR, FT-IR, EDX, TGA, DSC and volumetric studies. An efficient and environmentally benign catalytic protocol