SYNTHESIS OF SOME NEW 4-AMINO-1,2,4-TRIAZOLE DERIVATIVES AS POTENTIAL ANTI-HIV AND ANTI-HBV
作者:A. A. El-Barbary、A. Z. Abou-El-Ezz、A. A. Abdel-Kader、Mai El-Daly、Claus Nielsen
DOI:10.1080/10426500490463989
日期:2004.8
Some novel [1,2,4] triazolo[3,4-b][1,3,4] thiadiazolylisoindole-1,3-dione 2a-c were prepared by heating 4-amino-5-aryl-1,2,4-triazole-3-thiones 1a-c with different (1,3-dioxo-1,3-diliydro-isoitidol-2-yl) carboxylic acids in. POCl3. Compounds 2a,b were hydrolyzed using HCl, to yield [1,2,4]triazolo[3,4-b][1,3,4]thiadiazolyl-alkylamines 3a,b. Coupling 1a,c with 2,3,4,6-tetra-O-acetyl-alpha-D-glucopyraizosyl bromide (ABG) afforded the corresponding S-glucosides 4a,6, which oil oxidation. with. KMnO4 gave the corresponding sulfone 5. Treatment 1b,c with diphenyl diazonzethane afforded benzhydrylsulfanyltriazolylamines 7a,b. 1,8-Bis-(4-chloro-phenyl)-bis-[1,2,4]triazolo[3,4-c-,4',3'-e][1,2,4,5]dithiadiazine 8 was formed by oxidation of 1b with lead tetracetate. Compound 1c reacted with. morpholine in the presence of KI and I-2 to give the triazolodisulfide 9.