Discovery of Isoquinolinone Indole Acetic Acids as Antagonists of Chemoattractant Receptor Homologous Molecule Expressed on Th2 Cells (CRTH2) for the Treatment of Allergic Inflammatory Diseases
摘要:
Previously we reported the discovery of CRA-898 (1), a diazine indole acetic acid containing CRTH2 antagonist. This compound had good in vitro and in vivo potency, low rates of metabolism, moderate permeability, and good oral bioavailability in rodents. However, it showed low oral exposure in nonrodent safety species (dogs and monkeys). In the current paper, we wish to report our efforts to understand and improve the poor PK in nonrodents and development of a new isoquinolinone subseries that led to identification of a new development candidate, CRA-680 (44). This compound was efficacious in both a house dust mouse model of allergic lung inflammation (40 mg/kg qd) as well as a guinea pig allergen challenge model of lung inflammation (20 mg/kg bid).
Disclosed are compounds of Formula (I):
which are useful as antagonists of the CRTH2 receptors. Pharmaceutical compositions containing compounds of Formula (I) and the use of compounds of Formula (I) to treat diseases or disorders that are responsive to inhibition of the binding of endogenous ligands to the CRTH2 receptor are also disclosed. Methods for preparing and using these compounds are further described.
Disclosed are small molecule antagonists of α4β7 integrin, and methods of using them to treat a number of specific diseases or conditions.
揭示了α4β7整合素的小分子拮抗剂,以及使用它们治疗多种特定疾病或病况的方法。
Rhodium-Catalyzed Amination and Annulation of Arenes with Anthranils: C-H Activation Assisted by Weakly Coordinating Amides
作者:Manman Wang、Lingheng Kong、Fen Wang、Xingwei Li
DOI:10.1002/adsc.201700899
日期:2017.12.19
A rhodium(III)‐catalyzed C−H amination of benzamides and isoquinolones with anthranils has been realized under assistance of weakly coordinating amide, leading to a bifunctionalized amination product which can further cyclize to acridine under in situ or ex situ conditions.
Rhodium-Catalyzed Annulative Coupling Using Vinylene Carbonate as an Oxidizing Acetylene Surrogate
作者:Koushik Ghosh、Yuji Nishii、Masahiro Miura
DOI:10.1021/acscatal.9b04254
日期:2019.12.6
Transition-metal-catalyzed C–Hactivation and subsequent oxidative cyclization with alkynes has been a powerful tool for the synthesis of polycyclic aromatic compounds. Despite the substantial progress in this field, it is still a significant challenge to establish synthetic methodologies for the construction of nonsubstituted vinylene-fused aromatics. We herein report a Rh(III)-catalyzed C–H/N–H annulation with vinylene