Novel Benzo[1,4]diazepin-2-one Derivatives as Endothelin Receptor Antagonists
摘要:
Since its discovery in 1988 by Yanagisawa et al., endothelin (ET), a potent vasoconstrictor, has been widely implicated in the pathophysiology of cardiovascular, cerebrovascular, and renal diseases. Many research groups have embarked on the discovery and development of ET receptor antagonists for the treatment of such diseases. While several compounds, e.g., ambrisentan 2, are in late clinical trials for various indications, one compound (bosentan, Tracleer) is being marketed to treat pulmonary arterial hypertension. Inspired by the structure of ambrisentan 2, we designed a novel class of ET receptor antagonists based on a 1,3,4,5-tetrahydro-1H-benzo[e] [1,4]diazepin-2-one scaffold. Here, we report on the preparation as well as the in vitro and in vivo structure-activity relationships of these derivatives. Potent dual ETA/ETB receptor antagonists with affinities in the low nanomolar range have been identified. In addition, several compounds efficiently reduced arterial blood pressure after oral administration to Dahl salt sensitive rats. In this animal model, the efficacy of the benzo [e] [1,4] diazepin-2-one derivative rac-39au was superior to that of racemic ambrisentan, rac-2.
Novel Benzo[1,4]diazepin-2-one Derivatives as Endothelin Receptor Antagonists
摘要:
Since its discovery in 1988 by Yanagisawa et al., endothelin (ET), a potent vasoconstrictor, has been widely implicated in the pathophysiology of cardiovascular, cerebrovascular, and renal diseases. Many research groups have embarked on the discovery and development of ET receptor antagonists for the treatment of such diseases. While several compounds, e.g., ambrisentan 2, are in late clinical trials for various indications, one compound (bosentan, Tracleer) is being marketed to treat pulmonary arterial hypertension. Inspired by the structure of ambrisentan 2, we designed a novel class of ET receptor antagonists based on a 1,3,4,5-tetrahydro-1H-benzo[e] [1,4]diazepin-2-one scaffold. Here, we report on the preparation as well as the in vitro and in vivo structure-activity relationships of these derivatives. Potent dual ETA/ETB receptor antagonists with affinities in the low nanomolar range have been identified. In addition, several compounds efficiently reduced arterial blood pressure after oral administration to Dahl salt sensitive rats. In this animal model, the efficacy of the benzo [e] [1,4] diazepin-2-one derivative rac-39au was superior to that of racemic ambrisentan, rac-2.
A novel class of endothelin-A receptor ligands was discovered by high-throughput screening. Lead structure optimization led to highly potent antagonists which can be synthesized in a short sequence. The compounds are endothelin-A-selective, are orally available, and show a long duration of action.
Novel benzo-fused heterocycles as endothelin antagonisits
申请人:Bolli Martin
公开号:US20050124605A1
公开(公告)日:2005-06-09
The invention relates to novel benzo-fused heterocycles and their use as active ingredients in the preparation of pharmaceutical compositions. The invention also concerns related aspects including processes for the preparation of the compounds, pharmaceutical compositions containing one or more of those compounds and especially their use as endothelin receptor antagonists.
[EN] NOVEL BENZO-FUSED HETEROCYCLES AS ENDOTHELIN ANTAGONISITS<br/>[FR] HETEROCYCLES A FUSION BENZO UTILISES COMME ANTAGONISTES VIS-A-VIS DE L'ENDOTHELINE
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2003013545A1
公开(公告)日:2003-02-20
The invention relates to novel benzo-fused heterocycles of structure (I) and their use as active ingredients in the preparation of pharmaceutical compositions. The invention also concerns related aspects including processes for the preparation of the compounds, pharmaceutical compositions containing one or more of those compounds and especially their use as endothelin receptor antagonists. Formula (I)