共查询到18条相似文献,搜索用时 62 毫秒
1.
以4-甲氧基苯基-β-D-吡喃葡萄糖苷为原料,经9步反应制得新型关键中间体2,4,6-三-O-苄基-3-羰基-D-葡萄糖酸内酯乙二硫醇缩酮(10); 10与5-溴-2-氯-4′-乙氧基二苯甲烷经亲核加成反应制得甲基糖苷(12); 12在BF3·Et2O催化下经Et3SiH还原、AlCl3脱去苄基、再经PhI(CF3CO2)2氧化脱除乙二硫醇保护基合成了SGLT2抑制剂3-羰基达格列净,共13步反应,总收率9%,该合成路线包含了11个新化合物的合成,其结构经1H NMR, 13C NMR, IR和HR-ESI-MS表征。 相似文献
2.
3.
3-脱氧达格列净(1)是一个高选择性的强效钠依赖性葡萄糖转运子2(SGLT2)抑制剂.本研究发现了一条以廉价的α-D-甲基吡喃葡萄糖(2)为起始原料的简便的3-脱氧达格列净(1)的汇聚式合成路线,共13步,总产率38%.在此过程中系统研究了4,6-O-苄叉-α-D-甲基吡喃葡萄糖苷(3)中2-OH和3-OH的选择性保护策略,使用NOE(nuclear overhauser effect)技术对区域异构体进行了结构鉴定,并对区域异构体的相对比例和相对极性提出了合理解释;在此过程中对4,6-O-苄叉-2-O-叔丁基二苯基硅基-α-D-甲基吡喃葡萄糖(4)中葡萄糖片段上位阻较大3-OH的脱氧策略也进行了系统研究,最终获得了最优的脱氧策略.该路线为一条汇聚式路线,具有廉价、操作简便的特点,可以作为一种高效合成3-脱氧苯基C-葡萄糖苷类化合物的通用方法. 相似文献
4.
由1-(5-溴-2-甲基苯基)-1-甲基乙醇(1)通过6步反应,制得了钠-葡萄糖协同转运蛋白2(SGLT2)抑制剂偕二甲基化canagliflozin,总产率38.1%,其中关键的一步是叔醇和噻吩发生的傅-克烷基化反应。利用1H NMR、13C NMR和HR-MS表征了最终产物的结构。最终产物利用大鼠尿糖排泄试验(UGE)进行了活性评价,结果显示合成的化合物具有一定的尿糖诱导能力,但不如母体化合物canagliflozin活性高。 相似文献
5.
6.
7.
8.
9.
10.
11.
Structural modifications of 3-OH in the glucose moiety of dapagliflozin(1), an approved potent sodium-dependent glucose transporter 2(SGLT2) inhibitor, led to 3-oxodapagliflozin(16), a highly potent and more selective SGLT2 inhibitor[IC50(hSGLT1)/IC50(hSGLT2)=2851 for compound 16 vs. 843 for compound 1]. 3-Oxodapagliflozin(16) exhibited in vitro(IC50=1.0nmol/L against hSGLT2 for compound 16 vs. 1.3 nmol/L for compound 1) and in vivo activities comparable to those of dapagliflozin(1). The bioactivities of 3-oxodapagliflozin (16) warrant its further evaluation as a promising SGLT2 inhibitor for the treatment of type 2 diabetes. 相似文献
12.
13.
The title compound tianagliflozin triacetate 1 was synthesized and its crystal structure was determined by single-crystal X-ray diffraction.The crystal belongs to monoclinic system(C27H31ClO8,Mr = 518.97),space group P21 with a = 5.3913(11),b = 16.137(2),c = 15.411(3) ,β = 94.15(3)°,V = 1337.3(5) 3,Z = 2,Dc = 1.289 g/cm3,F(000) = 548,μ = 0.190 mm-1,the final R = 0.0374 and wR = 0.0809 for 3981 observed reflections(I 2σ(I)).The structure of 1,triacetate of a highly potent SGLT2 inhibitor tianagliflozin,was unambiguously determined by single-crystal X-ray diffraction,which helped to confirm the desired β configuration at the anomeric center and the position where the deoxylation occurred.The two benzene rings in the lattice are basically orthogonal to each other.There are four intermolecular hydrogen bonds in the crystal,which helps to further stabilize the crystal. 相似文献
14.
在水热条件下, 分别用过渡金属离子Zn(Ⅱ)和Co(Ⅱ)与混合手性羧酸和含氮配体反应, 合成了2个手性金属-有机配位聚合物[M(D-cam)(H2mbdpz)]n[M=Zn(1), Co(2); D-H2cam=D-(+)-樟脑酸; H2mbdpz=4,4'-亚甲基二(3,5-二甲基吡唑)]. 通过单晶X射线衍射、粉末X射线衍射、元素分析、热重分析及荧光分析对其结构、组成和性质进行了表征. 单晶结构分析表明, 配合物1和2是异质同晶的手性三维开放骨架结构, 具有单节点三连接的ThSi2型网络拓扑结构. 相似文献
15.
16.
Using chloroacetic acid, p‐hydroxyl aromatic aldehydes 1 and aromatic diamines 3 as starting materials, novel bisbenzimidazoles 5 with unsymmetric structure were synthesized via aryloxyacetic acid intermediates 2 . Four new intermediates 4 and ten target molecules 5 were characterized by FTIR, 1H NMR, 13C NMR, MS and elemental analysis. Different synthetic methods, including one‐pot synthesis and intermittent microwave promotion, were investigated. The research provides a new method and idea for the synthesis of bisbenzimidazoles. 相似文献
17.
Shuo Zhang Yu-Li Wang Qun-Chao Wei Wei-Ren Xu Li-Da Tang Gui-Long Zhao Jian-Wu Wang 《中国化学快报》2013,24(5):429-432
Seven cyclohexane-bearing C-glucoside derivatives (7, 9, 12, 13 and 17-19) were designed and synthesized as SGLT2 inhibitors starting from a potent SGLT2 inhibitor we discovered in earlier work, (1S)-1-deoxy-1-[4-methoxy-3-(trans-n-propylcyclohexyl)methylphenyl]-D-glucose (1). The in vitro and in vivo biological activities were evaluated by hSGLT2/hSGLT1 inhibition and urinary glucose excretion (UGE), respectively. Among the synthesized compounds 12, the 6-deoxy derivative of 1 was the most active and selective SGLT2 inhibitor (IC50 = 1.4 nmol/L against hSGLT2; selectivity = 1576). Compound 12 was a potent SGLT2 inhibitor, which could induce more urinary glucose than 1 and dapagliflozin in UGE. 相似文献