Substituted 1H-pyrazolo[3,4-b]pyridine-4- and 1H-pyrazolo[3,4-b]pyridine-6-carboxamides have been synthetized through a Doebner–Ugi multicomponent reaction sequence in a convergent and versatile manner using diversity generation strategies: combination of two multicomponent reactions and conditions-based divergence strategy. The target products contain as pharmacophores pyrazolopyridine and peptidomimetic moieties with four points of diversity introduced from readily available starting materials including scaffold diversity. A small focused compound library of 23 Ugi products was created and screened for antibacterial activity.
通过Doebner-Ugi多组分反应序列,采用多样性生成策略,结合两个多组分反应和基于条件的分歧策略,以收敛和多功能的方式合成了取代的1H-吡唑并[3,4-b]吡啶-4-和1H-吡唑并[3,4-b]吡啶-6-羧酰胺。目标产物含有作为药效团的吡唑并吡啶和肽类模拟物,从易得到的起始材料中引入了四个多样性点,包括支架多样性。创建了一个由23个Ugi产物组成的小型化合物库,并对其进行了抗菌活性筛选。