2-Oxopyrrolidines and 6-Oxoperhydropyrrolo[1,2-a]pyrazines as Templates in the Search for Nonpeptide Cholecystokinin Ligands.
作者:Mercedes MARTIN-MARTINEZ、Santiago BALLAZ、Miriam LATORRE、Rosario HERRANZ、M. Teresa GARCIA-LOPEZ、Edurne CENARRUZABEITIA、Joaquin DEL RIO、Rosario GONZALEZ-MUNIZ
DOI:10.1248/cpb.46.782
日期:——
improved binding affinity at the CCK-A receptor subtype with respect to the model 3-oxoindolizidines. In contrast, the incorporation of the Trp residue at the secondary amino group of a pyrrolo[1,2-a]pyrazine template 5, involving a drastic restriction in the conformational flexibility of the molecule, resulted in a series of bicyclic derivatives that did not bind to CCK receptors at concentrations up to
为了找到新类别的非肽胆囊收缩素(CCK)配体,一系列弱的基于3-氧代吲哚并咪唑的CCK拮抗剂的构象限制都已降低和提高。该策略产生了一系列单环2-氧吡咯烷衍生物4,其对CCK-A或CCK-B受体具有选择性,并且相对于3-氧代吲哚并烷模型,其对CCK-A受体亚型的结合亲和力略有提高。相反,在吡咯并[1,2-a]吡嗪模板5的仲氨基处掺入Trp残基,涉及分子构象柔韧性的严格限制,导致一系列双环衍生物没有以高达10(-5)M的浓度结合CCK受体。