Synthesis, Affinity Profile and Functional Activity of Potent Chiral Muscarinic Antagonists with a Pyrrolidinylfuran Structure
作者:Serena Scapecchi、Marta Nesi、Rosanna Matucci、Cristina Bellucci、Michela Buccioni、Silvia Dei、Luca Guandalini、Dina Manetti、Cecilia Martelli、Elisabetta Martini、Gabriella Marucci、Francesca Orlandi、Maria Novella Romanelli、Elisabetta Teodori、Roberto Cirilli
DOI:10.1021/jm901048j
日期:2010.1.14
Starting from the structure of previously studied muscarinic agonists, characterized by a pyrrolidinylfuran scaffold, a new series of muscarinic antagonists was synthesized by substituting the 5-position of the furane cycle with bulky hydrophobic groups. Both tertiary amines and the corresponding iodomethyl derivatives were obtained and studied. All the new compounds show high affinity toward cloned
从先前研究的以吡咯烷基呋喃骨架为特征的毒蕈碱激动剂的结构开始,通过用大量的疏水基团取代呋喃环的5-位,合成了一系列新的毒蕈碱拮抗剂。获得并研究了叔胺和相应的碘甲基衍生物。所有这些新化合物均对克隆的人毒蕈碱M 1 -M 5具有高亲和力受体在中国仓鼠卵巢(CHO)细胞中表达,在毒蕈碱受体经典模型中起竞争性拮抗剂的作用。通过手性HPLC将该系列的最高亲和力化合物的非对映异构体混合物拆分为四个旋光异构体。通过基于X射线晶体学和按摩技术的组合策略来确定所获得化合物的相对和绝对构型。尽管通常相当有效,但这些化合物仅显示出适度的亚型选择性,除了2a和6a以外,在功能测定中,它们对兔输精管中存在的毒蕈碱受体表现出明显的选择性。