The synthesis of new 4-imino-4H-chromeno[2,3-d]pyrimidin-3(5H)-amine in four steps including one step under microwave dielectric heating is reported. The structural identity of the synthesized compounds was establishe...The synthesis of new 4-imino-4H-chromeno[2,3-d]pyrimidin-3(5H)-amine in four steps including one step under microwave dielectric heating is reported. The structural identity of the synthesized compounds was established according to their spectroscopic analysis, such as FT-IR, NMR and mass spectroscopy. These new compounds were tested for their antiproliferative activities on seven representative human tumoral cell lines (Huh7 D12, Caco2, MDA-MB231, MDA-MB468, HCT116, PC3 and MCF7) and also on fibroblasts. Among them, only the compounds 6c showed micromolar cytotoxic activity on tumor cell lines (1.8 50 50 > 25 μM). Finally, in silico ADMET studies ware performed to investigate the possibility of using of the identified compound 6c as potential anti-tumor compound.展开更多
目的探讨老年初诊2型糖尿病(T2DM)病人血清淀粉样蛋白A(SAA)、摄食抑制因子-1(Nesfatin-1)、25-羟维生素-D3[25(OH)D3)]水平变化及其与糖脂代谢、胰岛素抵抗的关系。方法选取2017年8月至2019年10月石家庄市第三医院老年初诊T2DM病人106...目的探讨老年初诊2型糖尿病(T2DM)病人血清淀粉样蛋白A(SAA)、摄食抑制因子-1(Nesfatin-1)、25-羟维生素-D3[25(OH)D3)]水平变化及其与糖脂代谢、胰岛素抵抗的关系。方法选取2017年8月至2019年10月石家庄市第三医院老年初诊T2DM病人106例为T2DM组,按1∶1比例选取同期106例健康体检者为健康对照组。对比两组血清SAA、Nesfatin-1、25(OH)D3水平、血糖指标[餐后2 h血糖(2 h PG)、空腹血糖(FBG)]、血脂指标[总胆固醇(TC)、三酰甘油(TG)]、胰岛素敏感性指数(ISI)、胰岛素抵抗指数(HOMA-IR)、餐后2 h胰岛素水平(2 h INS)水平,Pearson相关系数分析老年初诊T2DM病人血清SAA、Nesfatin-1、25(OH)D3水平与糖脂代谢、胰岛素抵抗的相关性。结果 T2DM组血清SAA(564.86±102.53)μg/L、Nesfatin-1(3.06±1.12)μg/L、2 h PG(17.49±3.67)mmol/L、FBG(9.64±2.52)mmol/L、2 h INS(40.29±4.57)mU/L、TC(5.83±1.49)mmol/L、TG(2.92±0.56)mmol/L水平高于健康对照组(496.28±94.42)μg/L、(1.04±0.47)μg/L、(9.58±2.46)mmol/L、(5.31±1.27)mmol/L、(35.63±3.47)mU/L、(4.68±1.26)mmol/L、(1.49±0.47)mmol/L,血清25(OH)D3水平(35.72±5.41)nmol/L低于健康对照组(50.69±6.42)nmol/L(P<0.05);T2DM组ISI(0.46±0.17)低于健康对照组(0.59±0.20),HOMA-IR(5.59±1.04)高于健康对照组(1.69±0.49)(P<0.05);T2DM病人血清SAA、Nesfatin-1水平与2 h PG、FBG、TC、TG、HOMA-IR水平呈正相关,与血清ISI水平呈负相关,血清25(OH)D3水平与2 h PG、FBG、TC、TG、HOMA-IR水平呈负相关,与ISI水平呈正相关(P<0.05)。结论血清SAA、Nesfatin-1在老年初诊T2DM病人中呈高表达,血清25(OH)D3呈低表达,且表达与病人糖脂代谢、胰岛素抵抗关系密切,可作为病情程度评估因子。展开更多
以硫脲和氯乙酸为原料,在无溶剂和350 W微波辐射4 m in条件下,缩合生成中间体2,4-噻唑烷二酮(Ⅰ)产率91.5%;随后在无溶剂和400 W微波辐射5 m in条件下,通过V ilsm e ier甲酰化反应,生成中间体4-氯-5-甲酰基噻唑-2(3H)-酮(Ⅱ),产率86.7%...以硫脲和氯乙酸为原料,在无溶剂和350 W微波辐射4 m in条件下,缩合生成中间体2,4-噻唑烷二酮(Ⅰ)产率91.5%;随后在无溶剂和400 W微波辐射5 m in条件下,通过V ilsm e ier甲酰化反应,生成中间体4-氯-5-甲酰基噻唑-2(3H)-酮(Ⅱ),产率86.7%;最后以正丙醇为溶剂,450 W微波辐射7 m in条件下,成环得到5-氨基-噻唑[4,5-d]嘧啶-2(3H)-酮(Ⅲ),产率80.5%。反应总产率为63.9%。合成产物与中间体的结构经1HNMR,MS和元素分析确认。展开更多
文摘The synthesis of new 4-imino-4H-chromeno[2,3-d]pyrimidin-3(5H)-amine in four steps including one step under microwave dielectric heating is reported. The structural identity of the synthesized compounds was established according to their spectroscopic analysis, such as FT-IR, NMR and mass spectroscopy. These new compounds were tested for their antiproliferative activities on seven representative human tumoral cell lines (Huh7 D12, Caco2, MDA-MB231, MDA-MB468, HCT116, PC3 and MCF7) and also on fibroblasts. Among them, only the compounds 6c showed micromolar cytotoxic activity on tumor cell lines (1.8 50 50 > 25 μM). Finally, in silico ADMET studies ware performed to investigate the possibility of using of the identified compound 6c as potential anti-tumor compound.
文摘目的探讨老年初诊2型糖尿病(T2DM)病人血清淀粉样蛋白A(SAA)、摄食抑制因子-1(Nesfatin-1)、25-羟维生素-D3[25(OH)D3)]水平变化及其与糖脂代谢、胰岛素抵抗的关系。方法选取2017年8月至2019年10月石家庄市第三医院老年初诊T2DM病人106例为T2DM组,按1∶1比例选取同期106例健康体检者为健康对照组。对比两组血清SAA、Nesfatin-1、25(OH)D3水平、血糖指标[餐后2 h血糖(2 h PG)、空腹血糖(FBG)]、血脂指标[总胆固醇(TC)、三酰甘油(TG)]、胰岛素敏感性指数(ISI)、胰岛素抵抗指数(HOMA-IR)、餐后2 h胰岛素水平(2 h INS)水平,Pearson相关系数分析老年初诊T2DM病人血清SAA、Nesfatin-1、25(OH)D3水平与糖脂代谢、胰岛素抵抗的相关性。结果 T2DM组血清SAA(564.86±102.53)μg/L、Nesfatin-1(3.06±1.12)μg/L、2 h PG(17.49±3.67)mmol/L、FBG(9.64±2.52)mmol/L、2 h INS(40.29±4.57)mU/L、TC(5.83±1.49)mmol/L、TG(2.92±0.56)mmol/L水平高于健康对照组(496.28±94.42)μg/L、(1.04±0.47)μg/L、(9.58±2.46)mmol/L、(5.31±1.27)mmol/L、(35.63±3.47)mU/L、(4.68±1.26)mmol/L、(1.49±0.47)mmol/L,血清25(OH)D3水平(35.72±5.41)nmol/L低于健康对照组(50.69±6.42)nmol/L(P<0.05);T2DM组ISI(0.46±0.17)低于健康对照组(0.59±0.20),HOMA-IR(5.59±1.04)高于健康对照组(1.69±0.49)(P<0.05);T2DM病人血清SAA、Nesfatin-1水平与2 h PG、FBG、TC、TG、HOMA-IR水平呈正相关,与血清ISI水平呈负相关,血清25(OH)D3水平与2 h PG、FBG、TC、TG、HOMA-IR水平呈负相关,与ISI水平呈正相关(P<0.05)。结论血清SAA、Nesfatin-1在老年初诊T2DM病人中呈高表达,血清25(OH)D3呈低表达,且表达与病人糖脂代谢、胰岛素抵抗关系密切,可作为病情程度评估因子。
文摘以硫脲和氯乙酸为原料,在无溶剂和350 W微波辐射4 m in条件下,缩合生成中间体2,4-噻唑烷二酮(Ⅰ)产率91.5%;随后在无溶剂和400 W微波辐射5 m in条件下,通过V ilsm e ier甲酰化反应,生成中间体4-氯-5-甲酰基噻唑-2(3H)-酮(Ⅱ),产率86.7%;最后以正丙醇为溶剂,450 W微波辐射7 m in条件下,成环得到5-氨基-噻唑[4,5-d]嘧啶-2(3H)-酮(Ⅲ),产率80.5%。反应总产率为63.9%。合成产物与中间体的结构经1HNMR,MS和元素分析确认。