Triazolopyridines. Part 24: New polynitrogenated potential helicating ligands
摘要:
The synthesis of novel 7-{[1,2,3]triazolo[1,5-a]pyridin-3-yl}-[1,2,3]triazolo[1,5-a]pyridines 7, 2-pyridyl-[1,2,3]triazolo[1,5-a]pyrid-7-ylmethanols 11, 3-(6-substituted-2-pyridyl)-[1,2,3]triazolo[1,5-a]pyridines 12, and 7,7'-disubstituted-3,3'-[1,2,3]triazolo[1,5-a]pyridine 20, interesting polynitrogenated ligands as potential helicating compounds or luminescent sensors, from [1,2,3]triazolo[1,5-a]pyridines is described. (C) 2004 Elsevier Ltd. All rights reserved.
Triazolopyridines. Part 24: New polynitrogenated potential helicating ligands
摘要:
The synthesis of novel 7-{[1,2,3]triazolo[1,5-a]pyridin-3-yl}-[1,2,3]triazolo[1,5-a]pyridines 7, 2-pyridyl-[1,2,3]triazolo[1,5-a]pyrid-7-ylmethanols 11, 3-(6-substituted-2-pyridyl)-[1,2,3]triazolo[1,5-a]pyridines 12, and 7,7'-disubstituted-3,3'-[1,2,3]triazolo[1,5-a]pyridine 20, interesting polynitrogenated ligands as potential helicating compounds or luminescent sensors, from [1,2,3]triazolo[1,5-a]pyridines is described. (C) 2004 Elsevier Ltd. All rights reserved.
type I and type II mechanisms are involved in the photocleavage process. Furthermore, compounds 1a–c were tested for their antiprotozoal activity against four different Leishmania spp. (L. infantum, L. braziliensis, L. guyanensis and L. amazonensis). Triazolopyridopyrimidines 1a and 1c resulted to be more active and selective than the referencedrug (miltefosine) in vitro against L. infantum amastigotes
三唑并吡啶并嘧啶3-苯基-6,8-二(2-吡啶基)-[1,2,3]三唑并[5',1':6,1]吡啶并[2,3- d ]嘧啶(1a),6, 8-二(吡啶-2-基)-[1,2,3]三唑并[1',5':1,6]吡啶[2,3- d ]嘧啶(1b)和3-甲基-6,8制备了-二(2-吡啶基)-[1,2,3]三唑[5',1':6,1]吡啶[2,3- d ]嘧啶(1c),并对其电化学和发光性能进行了研究。深度。通过紫外可见吸收和荧光滴定,亚铁氰化物的稳态发射猝灭以及粘度测量,研究了该系列化合物的DNA结合能力。结果表明,三唑并吡啶并嘧啶1a在DNA凹槽处相互作用强烈。该化合物还显示出与富含GC的序列的优先结合以及光氧化鸟嘌呤的能力。此外,这些研究还揭示了三唑环上的苯基取代基在1a–c的结合亲和力中的关键作用。化合物1b和1c没有显示出明显的DNA结合倾向,但是这些三唑并吡啶并嘧啶类化合物表现出光诱导的DN