The invention relates to the field of organic and medicinal chemistry, as well as molecular biology, and concerns a new class of compounds for imaging PSMA expressing cells and tissues, such as prostate cancer cells. New diagnostic conjugates for the visualization of pathogenic cells or tissues expressing PSMA, including the PSMA ligand with a linker and a fluorescent dye, the method for its preparation and use are claimed. The technical result of the claimed group of inventions is the high affinity and selectivity of the action of the claimed conjugates in relation to PSMA expressing cells. These compounds allow you to expand the arsenal of diagnostic tools for imaging cells with high level of PSMA expression. The use of an azido derivative of aminopentanoic acid makes it possible to obtain a PSMA vector with a long hydrophobic linker and protected carboxy groups, which in turn facilitates its modification, increases the yield and reduces the amount of solvents used in the process due to a significant increase in the solubility of the starting compound (PSMA vector with a long hydrophobic linker and protected carboxy groups). The key feature of the claimed conjugate is the presence of a long hydrophobic linker in the structure, as well as additional aromatic fragments, the presence of which contributes to better binding of the claimed conjugate to the protein target, due to the involvement of additional interactions between the compound and the hydrophobic pockets in the structure of the hydrophobic tunnel of the protein target.
该发明涉及有机和药物
化学、
分子生物学领域,涉及一类用于成像表达PSMA的细胞和组织(如前列腺癌细胞)的新型化合物。声称了用于可视化表达PSMA的病原细胞或组织的新诊断共轭物,包括带有连接剂和荧光
染料的PSMA
配体,以及其制备和使用方法。所声称的发明组合的技术结果是所声称的共轭物在与PSMA表达细胞的关系中具有高亲和力和选择性的作用。这些化合物可以扩大成像PSMA表达
水平高的细胞的诊断工具库。使用
氨基
戊二酸的偶氮衍
生物可以获得具有长疏
水连接剂和保护羧基的PSMA载体,从而便于其修饰,增加产量并减少由于起始化合物的溶解度显著增加而在过程中使用的溶剂量。所声称的共轭物的关键特征是结构中存在长疏
水连接剂,以及额外的芳香片段,其存在有助于所声称的共轭物与蛋白靶标更好地结合,因为涉及到化合物与蛋白靶标的疏
水隧道结构中的疏
水口袋之间的额外相互作用。