Discovery of Novel and Potent Orally Active Calcium-Sensing Receptor Antagonists that Stimulate Pulselike Parathyroid Hormone Secretion: Synthesis and Structure−Activity Relationships of Tetrahydropyrazolopyrimidine Derivatives
作者:Masato Yoshida、Akira Mori、Etsuo Kotani、Masahiro Oka、Haruhiko Makino、Hisashi Fujita、Junko Ban、Yukihiro Ikeda、Tomohiro Kawamoto、Mika Goto、Hiroyuki Kimura、Atsuo Baba、Tsuneo Yasuma
DOI:10.1021/jm101452x
日期:2011.3.10
bone anabolic agents, we recently reported the discovery of a tetrahydropyrazolopyrimidine derivative featuring adamantyl group 1b with potent CaSR antagonistic activity. To explore the potential of this calcilytic congener, we introduced the gem-dialkyl benzyl group at the 3-position of the tetrahydropyrazolopyrimidine ring, forming a bioisostere of the adamantyl group by mimicking the adamantyl group’s
作为我们对新型钙敏感受体(CaSR)拮抗剂的研究的一部分,该拮抗剂可作为口服骨合成代谢药物发挥作用,我们最近报道了具有金刚烷基1b的四氢吡唑并嘧啶衍生物的发现,该衍生物具有强大的CaSR拮抗活性。为了探索该煅烧同源物的潜力,我们在四氢吡唑并嘧啶环的3-位引入了宝石-二烷基苄基,通过模仿金刚烷基的亲脂性和蓬松性而形成了金刚烷基的生物等排体。针对溶解度和代谢稳定性改善的优化导致了化合物9e的发现,当向正常大鼠口服时,该化合物可刺激PTH的短暂分泌。此外,复合9e在骨质减少卵巢切除的大鼠模型中被证明是完全有效的。