An approach for designing bioactive small molecules has been developed in which de novo structure-based ligand design (SBLD) was focused on regions of chemical space accessible using a diversity-oriented synthetic approach. The approach was exploited in the design and synthesis of a focused library of platensimycin analogues in which the complex bridged ring system was replaced with a series of alternative ring systems. The affinity of the resulting compounds for the C163Q mutant of FabF was determined using a WaterLOGSY competition binding assay. Several compounds had significantly improved affinity for the protein relative to a reference ligand. The integration of synthetic accessibility with ligand design enabled focus to be placed on synthetically-accessible regions of chemical space that were relevant to the target protein under investigation.
一种设计
生物活性小分子的策略已经被开发出来,该策略专注于通过多样性导向的合成方法访问的
化学空间区域,采用了从头基于结构的
配体设计(
SBLD)。该方法被用于设计和合成一个聚焦于板菌霉素类类似物的库,其中复杂的桥接环系统被一系列替代环系统所取代。通过
水LOGSY竞争结合测定法,确定了所得化合物对FabF的C163Q突变体的亲和力。与参考
配体相比,几种化合物对该蛋白质的亲和力明显提高。将合成可及性与
配体设计相结合,使得可以聚焦于与所研究目标蛋白相关的合成可及的
化学空间区域。