A New Class of Pseudopeptide Antagonists of the Kinin B<sub>1</sub> Receptor Containing Alkyl Spacers
作者:Claudia Galoppini、Stefania Meini、Mariella Tancredi、Armida Di Fenza、Antonio Triolo、Laura Quartara、Carlo A. Maggi、Fernando Formaggio、Claudio Toniolo、Silvia Mazzucco、Annamaria Papini、Paolo Rovero
DOI:10.1021/jm980495r
日期:1999.2.1
despite its greatly simplified chemical structure, MEN 11575 shows an improved pharmacological profile in terms of both potency and selectivity, and it represents a good template for the development of new peptidomimetic kinin B1 receptor antagonists. We also report an attempt to investigate the conformational role of the flexible, linear spacer of MEN 11575 and to design more constrained analogues, possibly
四种先前报道的激肽受体肽拮抗剂,包括B1受体选择性肽desArg10-HOE 140(HD-Arg-Arg-Pro-Hyp-Gly-Thi-Ser-D-Tic-Oic-OH)和B-9858(H -Lys-Lys-Arg-Pro-Hyp-Gly-Igl-Ser-D-Igl-Oic-OH)已通过用可变长度的线性烷基间隔基取代中央四肽Pro-Hyp-Gly-Xaa进行了修饰。发现含有11-氨基十一酸作为间隔基的desArg10-HOE 140的类似物MEN 11575 [HD-Arg-Arg-NH-(CH2)10-CO-Ser-D-Tic-Oic-OH]略微相似。在大鼠回肠纵向平滑肌测定中,其作为激肽B1受体拮抗剂比未修饰的肽(pA2 = 7.1)更有效。此外,MEN 11575在激肽B1受体(大鼠回肠)上没有残留的激动剂活性,而在激肽B2受体(豚鼠回肠纵向平滑肌)上没有拮抗剂活性。这两种活性都由亲本肽desArg10-HOE