Cyclic Pentapeptide Endothelin A Receptor Antagonists with Attenuated in Vivo Clearance.
作者:Takehiro FUKAMI、Kenji NIIYAMA、Yuuka AMANO、Akihiro HISAKA、Naoko FUJINO、Yoshio SAWASAKI、Masaki IHARA、Kiyofumi ISHIKAWA
DOI:10.1248/cpb.44.609
日期:——
series of analogues of BQ-123 (1), a potent cyclic pentapeptide endothelin A receptor antagonist, with amino acids linked to the side-chain of the Pro residue via an ester linkage was synthesized. All analogues synthesized exhibited potent endothelin A receptor binding affinity similar to that of 1. Of the synthesized analogues, the Lys, Arg and N alpha,N epsilon-dimethyllysine analogues, 9d-f, exhibited
合成了一系列有效的环状五肽内皮素A受体拮抗剂BQ-123(1)的类似物,其氨基酸通过酯键与Pro残基的侧链相连。合成的所有类似物均表现出与1相似的有效的内皮素A受体结合亲和力。在合成的类似物中,Lys,Arg和N alpha,Nε-二甲基赖氨酸类似物9d-f表现出体内清除率降低约三倍。与1相比,在大鼠中,这些类似物的血浆浓度比1的血浆浓度高3倍,并且在血浆中的保留时间更长。体内清除率的降低被认为是化合物从中的提取减少的结果。通过肝脏阴离子转运系统将血液从血液中有效地提取出1。