The fused triazole derivatives,which is an important inhibitors of the dipeptidyl peptidase-Ⅳ enzyme(DPP-Ⅳ),can be used for the treatment or prevention of type 2 diabetes.A new fused triazole derivatives of 3-oxo-3-...The fused triazole derivatives,which is an important inhibitors of the dipeptidyl peptidase-Ⅳ enzyme(DPP-Ⅳ),can be used for the treatment or prevention of type 2 diabetes.A new fused triazole derivatives of 3-oxo-3-[3-trifluoromethyl-5,6-dihydro[1,2,4]-triazolo[4,3-a]pyrazin-7(8H)-yl]-1-phenylpropan-1-amine was synthesized from 2-chloropyrazine and benzaldehyde by hydrazinolysis,trifluoroacetylation,cyclization,hydrogenation,condensation and deprotection reaction.The structures of the compound and its intermediates were determined by IR,NMR,and MS.展开更多
3,5-dimethyl phenyl isocyanate was prepared by the method of trichloromethyl chloroformate in 70% yield.New compound N,N′-di-(3,5-dimethyl)phenyl-3,6-dimethyl-1,4-dihydro-1,2,4,5-tetrazine-1,4-dicarboamide was synthe...3,5-dimethyl phenyl isocyanate was prepared by the method of trichloromethyl chloroformate in 70% yield.New compound N,N′-di-(3,5-dimethyl)phenyl-3,6-dimethyl-1,4-dihydro-1,2,4,5-tetrazine-1,4-dicarboamide was synthesized by reacting 3,5-dimethyl phenyl isocyanate and 3,6-dimethyl-1,6-dihydro-1,2,4,5-tetrazine.Its post-disposal method had been improved.yield being 30.8%.Byproduct 1,3-bis-(3,5-dimethyphenyl)-1,3-diazetidine-2,4-dione have not been reported,too.Their structures were conformed by IR, 1HNMR and elemental analysis.展开更多
文摘The fused triazole derivatives,which is an important inhibitors of the dipeptidyl peptidase-Ⅳ enzyme(DPP-Ⅳ),can be used for the treatment or prevention of type 2 diabetes.A new fused triazole derivatives of 3-oxo-3-[3-trifluoromethyl-5,6-dihydro[1,2,4]-triazolo[4,3-a]pyrazin-7(8H)-yl]-1-phenylpropan-1-amine was synthesized from 2-chloropyrazine and benzaldehyde by hydrazinolysis,trifluoroacetylation,cyclization,hydrogenation,condensation and deprotection reaction.The structures of the compound and its intermediates were determined by IR,NMR,and MS.
文摘3,5-dimethyl phenyl isocyanate was prepared by the method of trichloromethyl chloroformate in 70% yield.New compound N,N′-di-(3,5-dimethyl)phenyl-3,6-dimethyl-1,4-dihydro-1,2,4,5-tetrazine-1,4-dicarboamide was synthesized by reacting 3,5-dimethyl phenyl isocyanate and 3,6-dimethyl-1,6-dihydro-1,2,4,5-tetrazine.Its post-disposal method had been improved.yield being 30.8%.Byproduct 1,3-bis-(3,5-dimethyphenyl)-1,3-diazetidine-2,4-dione have not been reported,too.Their structures were conformed by IR, 1HNMR and elemental analysis.
