This study reports the synthesis of 1,1-bis(2-Carbamoylguanidino)furan-2-ylmethane, characterisation and bioactivities on selected microorganism. The first step involves the coupling of furfural with urea to obtain 1-...This study reports the synthesis of 1,1-bis(2-Carbamoylguanidino)furan-2-ylmethane, characterisation and bioactivities on selected microorganism. The first step involves the coupling of furfural with urea to obtain 1-((2-carbamoylguanidino)(furan-2-ylmethyl)urea, which was subsequently refluxed with more urea in ethanol for 1 hour to afford the product. Both intermediate and product were characterized by GC-MS, IR, <sup>1</sup>H-NMR, <sup>13</sup>C-NMR. The synthesized compound1,1-bis(2-carbamoylguanidino)furan-2-ylmethane was bioactive on Escherichia coli, Salmomellatyphi and Bacillus subtilis to different extent and is inactive on Staphylococcus aureus. The presences of bioactive moieties and pharmacological activities have proved the potency of furfural derivatives in the development of novel drug in future.展开更多
利用碱处理结合柠檬酸处理技术对商业微孔ZSM-5分子筛改性,制备了多级孔ZSM-5分子筛催化剂(ZSM-5-AT-CA)。利用XRD、N_(2)吸脱附、NH_(3)-TPD、Py-IR、^(27)Al MAS NMR等表征技术研究了ZSM-5-AT-CA催化剂的形貌结构和物理化学性质,以5-...利用碱处理结合柠檬酸处理技术对商业微孔ZSM-5分子筛改性,制备了多级孔ZSM-5分子筛催化剂(ZSM-5-AT-CA)。利用XRD、N_(2)吸脱附、NH_(3)-TPD、Py-IR、^(27)Al MAS NMR等表征技术研究了ZSM-5-AT-CA催化剂的形貌结构和物理化学性质,以5-羟甲基糠醛(HMF)自醚化制双-(5-甲酰基糠基)醚(OBMF)为模型反应进一步考察其催化性能。结果表明,ZSM-5-AT-CA催化剂具有多级孔结构(微孔、介孔)、适宜酸位点浓度和强度,有利于HMF自醚化反应。多级孔ZSM-5-AT-CA催化剂在反应温度90℃时HMF转化率达到91.2%,OBMF产率为73.6%。催化剂具有良好的循环稳定性。展开更多
文摘This study reports the synthesis of 1,1-bis(2-Carbamoylguanidino)furan-2-ylmethane, characterisation and bioactivities on selected microorganism. The first step involves the coupling of furfural with urea to obtain 1-((2-carbamoylguanidino)(furan-2-ylmethyl)urea, which was subsequently refluxed with more urea in ethanol for 1 hour to afford the product. Both intermediate and product were characterized by GC-MS, IR, <sup>1</sup>H-NMR, <sup>13</sup>C-NMR. The synthesized compound1,1-bis(2-carbamoylguanidino)furan-2-ylmethane was bioactive on Escherichia coli, Salmomellatyphi and Bacillus subtilis to different extent and is inactive on Staphylococcus aureus. The presences of bioactive moieties and pharmacological activities have proved the potency of furfural derivatives in the development of novel drug in future.
文摘利用碱处理结合柠檬酸处理技术对商业微孔ZSM-5分子筛改性,制备了多级孔ZSM-5分子筛催化剂(ZSM-5-AT-CA)。利用XRD、N_(2)吸脱附、NH_(3)-TPD、Py-IR、^(27)Al MAS NMR等表征技术研究了ZSM-5-AT-CA催化剂的形貌结构和物理化学性质,以5-羟甲基糠醛(HMF)自醚化制双-(5-甲酰基糠基)醚(OBMF)为模型反应进一步考察其催化性能。结果表明,ZSM-5-AT-CA催化剂具有多级孔结构(微孔、介孔)、适宜酸位点浓度和强度,有利于HMF自醚化反应。多级孔ZSM-5-AT-CA催化剂在反应温度90℃时HMF转化率达到91.2%,OBMF产率为73.6%。催化剂具有良好的循环稳定性。
