Peptide-Heterocycle Chimera: New Classes of More Drug-Like Peptidomimetics by Ligations of Peptide-Bis(electrophiles) with Various Bis(nucleophiles)
作者:Adeeb El-Dahshan、Samina Nazir、Ahsanullah、Farzana Latif Ansari、Jörg Rademann
DOI:10.1002/ejoc.201001206
日期:2011.2
aldehydes to yield peptidyl vinyl ketones or could be cleaved oxidatively to yield peptidyl keto aldehydes. Ligation with various bis(nucleophiles) including hydrazines, hydroxylamine, diamines, amino-thiols, amidines, and guanidines were investigated in the formation of peptide-heterocycle chimera containing pyrazoline, pyrazole, isoxazole, isoxazoline, thiazepine, quinoxaline, and imidazolone heterocycles
几个 C 末端肽基取代的双和三(亲电子试剂)是通过从聚合磷酰亚基乙酸酯作为酰基阴离子等价物开始制备的。在与氨基酸和肽延伸的 C-酰化后,获得的肽基正膦基乙酸酯树脂要么被氧化裂解,提供肽基-二酮酯,要么皂化,导致立即脱羧。生成的肽基正膦可以用醛处理以产生肽基乙烯基酮或可以氧化裂解以产生肽基酮醛。研究了与包括肼、羟胺、二胺、氨基硫醇、脒和胍在内的各种双(亲核试剂)连接以形成含有吡唑啉、吡唑、异恶唑、异恶唑啉、硫氮杂、喹喔啉、