Discovery of a Novel Class of Selective Non-Peptide Antagonists for the Human Neurokinin-3 Receptor. 2. Identification of (S)-N-(1-Phenylpropyl)-3-hydroxy-2- phenylquinoline-4-carboxamide (SB 223412)
摘要:
Optimization of the previously reported 2-phenyl-4-quinolinecarboxamide NK-3 receptor antagonist 14, with regard to potential metabolic instability of the ester moiety and affinity and selectivity for the human neurokinin-3 (hNK-3) receptor, is described. The ester functionality could be successfully replaced by the ketone (31) or by lower alkyl groups (Et, 21, or n-Pr, 24). Investigation of the substitution pattern of the quinoline ring resulted in the identification of position 3 as a key position to enhance hNK-3 binding affinity and selectivity for the hNK-3 versus the hNK-2 receptor. All of the chemical groups introduced at this position, with the exception of halogens, increased the hNK-3 binding affinity, and compounds 53 (3-OH, SE 223412, hNK-3-CHO binding K-i = 1.4 nM) and 55 (3-NHz, hNK-3-CHO binding K-i = 1.2 nM) were the most potent compounds of this series. Selectivity studies versus the other neurokinin receptors (hNK-8-CHO and hNK-1-CHO) revealed that 53 is about 100-fold selective for the hNK-3 versus hNK-2 receptor, with no affinity for the hNK-1 at concentrations up to 100 mu M. In vitro studies demonstrated that 53 is a potent functional antagonist of the hNK-3 receptor (reversal of senktide-induced contractions in rabbit isolated iris sphincter muscles and reversal of NKB-induced Ca2+ mobilization in CHO cells stably expressing the hNK-3 receptor), while in vivo this compound showed oral and intravenous activity in NK-3 receptor-driven models (senktide-induced behavioral responses in mice and senktide-induced miosis in rabbits). Overall, the biological data indicate that (S)-N-(1-phenylpropyl)-3-hydroxy-2-phenylquinoline-4-carboxamide (53, SE 223412) may serve as a pharmacological tool in animal models of disease to assess the functional and pathophysiological role of the NK-3 receptor and to establish therapeutic indications for non-peptide NK-3 receptor antagonists.
NK.sub.3 receptor antagonists of formula (I): ##STR1## are useful in treating inter alia pulmonary disorders, CNS disorders and neurodegenerative disorders.
[EN] QUINOLINE DERIVATIVES AS TACHYKININ NK3 RECEPTOR ANTAGONISTS<br/>[FR] DERIVES DE QUINOLINE UTILISES COMME ANTAGONISTES DU RECEPTEUR NK3 DE LA TACHYKININE
申请人:SMITHKLINE BEECHAM FARMACEUTICI S.P.A.
公开号:WO1995032948A1
公开(公告)日:1995-12-07
(EN) NK3 receptor antagonists of formula (I) are useful in treating $i(inter alia) pulmonary disorders, CNS disorders and neurodegenerative disorders.(FR) L'invention se rapporte à des antagonistes du récepteur NK3 de la formule (I) qui sont utiles dans le traitement, entre autres, des maladies pulmonaires, des troubles du SNC et des troubles neurodégénératifs.
NK3受体拮抗剂(I)的公式在治疗肺部疾病、中枢神经系统疾病和神经退行性疾病等方面非常有用。
Quinoline derivatives
申请人:Farina Carlo
公开号:US20060160846A1
公开(公告)日:2006-07-20
NK
3
receptor antagonists of formula (I):
are useful in treating inter alia pulmonary disorders, CNS disorders and neurodegenerative disorders.
公式(I)的NK3受体拮抗剂在治疗肺部疾病、中枢神经系统疾病和神经退行性疾病等方面是有用的。
Combination treatment for depression and anxiety
申请人:Pfizer Inc.
公开号:US20040006135A1
公开(公告)日:2004-01-08
The present invention relates to a method of treating depression or anxiety in a mammal, including a human, by administering to the mammal a CNS-penetrant NK-1 receptor antagonist (e.g., a substance P receptor antagonist) in combination with an NK-3 antagonist agent. It also relates to pharmaceutical compositions containing a pharmaceutically acceptable carrier, a CNS-penetrant NK-1 receptor antagonist and an NK-3 antagonist.