Design and Synthesis of Novel α1a Adrenoceptor-Selective Dihydropyridine Antagonists for the Treatment of Benign Prostatic Hyperplasia
摘要:
We report the synthesis and evaluation of novel alpha(1a) adrenoceptor subtype-selective antagonists. Systematic modification of the lipophilic 4,4-diphenylpiperidinyl moiety of the dihydropyridine derivatives 1 and 2 provided several highly selective and potent alpha(1a), antagonists. From this series, we identified the 4-(methoxycarbonyl)-4-phenylpiperidine analogue SNAP 5540 (-) [(-)-63] for further characterization. When examined in an isolated human prostate tissue assay, this compound was found to have a K-i of 2.8 nM, in agreement with the cloned human receptor binding data (K-i = 2.42 nM). Further evaluation of the compound in isolated dog prostate tissue showed a K-i of 3.6 nM and confirmed it to be a potent antagonist (K-b = 1.6 nM). In vivo, this compound effectively blocked the phenylephrine-stimulated increase in intraurethral pressure (IUP) in mongrel dogs, at doses which did not significantly affect the arterial pressure (diastolic blood pressure, DBP), with a DBP K-b/IUP K-b ratio of 16. In addition, (-)-63 also showed greater than 40 000-fold selectivity over the rat L-type calcium channel and 200-fold selectivity over several G protein-coupled receptors, including histamine and serotonin subtypes. These findings prove that alpha(1a) adrenoceptor-subtype selective antagonists such as (-)-63 may be developed as uroselective agents for an improved treatment of BPH over nonselective alpha(1) antagonists such as prazosin and terazosin, with fewer side effects.
Oxazolidinones as .alpha..sub.1A receptor antagonists
申请人:Synaptic Pharmaceutical Corporation
公开号:US06159990A1
公开(公告)日:2000-12-12
This invention is directed to oxazolidinone compounds which are selective antagonists for human .alpha..sub.1A receptors. This invention is also related to uses of these compounds for lowering intraocular pressure, inhibiting cholesterol synthesis, relaxing lower urinary tract tissue, the treatment of benign prostatic hyperplasia, impotency, cardiac arrhythmia and for the treatment of any disease where the antagonism of the .alpha..sub.1A receptor may be useful. The invention further provides a pharmaceutical composition comprising a therapeutically effective amount of the above-defined compounds and a pharmaceutically acceptable carrier.
This invention is directed to dihydropyrimidine compounds of the following formula:
which are selective antagonists for human &agr;1A receptors. This invention is also related to uses of these compounds for lowering intraocular pressure, inhibiting cholesterol synthesis, relaxing lower urinary tract tissue, the treatment of benign prostatic hyperplasia, impotency, cardiac arrhythmia and for the treatment of any disease where antagonism of the &agr;1A receptor may be useful. The invention further provides a pharmaceutical composition comprising a therapeutically effective amount of the above-defined compounds and a pharmaceutically acceptable carrier.
DNA encoding a human melanin concentrating hormone receptor (MCH1) and uses thereof
申请人:——
公开号:US20030082623A1
公开(公告)日:2003-05-01
This invention provides an isolated nucleic acid encoding a human MCH1 receptor, a purified human MCH1 receptor, vectors comprising isolated nucleic acid encoding a human MCH1 receptor, cells comprising such vectors, antibodies directed to a human MCH1 receptor, nucleic acid probes useful for detecting nucleic acid encoding human MCH1 receptors, antisense oligonucleotides complementary to unique sequences of nucleic acid encoding human MCH1 receptors, transgenic, nonhuman animals which express DNA encoding a normal or mutant human MCH1 receptor, methods of isolating a human MCH1 receptor, methods of treating an abnormality that is linked to the activity of a human MCH1 receptor, as well as methods of determining binding of compounds to mammalian MCH1 receptors. This invention provides a method of modifying the feeding behavior of a subject which comprises administering to the subject an amount of an MCH1 antagonist effective to decrease the body mass of the subject and/or decrease the consumption of food by the subject. This invention further provides a method of treating a subject suffering from depression and/or anxiety which comprises administering to the subject an amount of an MCH1 antagonist effective to treat the subject's depression and/or anxiety.
Selective melanin concentrating hormone-1 (MCH1) receptor antagonists and uses thereof
申请人:——
公开号:US20030069261A1
公开(公告)日:2003-04-10
This invention is directed to compounds which are selective antagonists for melanin concentrating hormone-1 (MCH1) receptors. The invention provides a pharmaceutical composition comprising a therapeutically effective amount of the compound of the invention and a pharmaceutically acceptable carrier. This invention provides a pharmaceutical composition made by combining a therapeutically effective amount of the compound of this invention and a pharmaceutically acceptable carrier. This invention further provides a process for making a pharmaceutical composition comprising combining a therapeutically effective amount of the compound of the invention and a pharmaceutically acceptable carrier.
This invention also provides a method of modifying feeding behavior of a subject which comprises administering to the subject an amount of a compound of the invention effective to decrease the consumption of food by the subject. This invention further provides a method of treating a feeding disorder in a subject which comprises administering to the subject an amount of a compound of the invention effective to decrease the consumption of food by the subject. In an embodiment of the invention, the feeding disorder is bulimia, bulimia nervosa or obesity.
[EN] HETEROCYCLIC SUBSTITUTED PIPERIDINES AND USES THEREOF<br/>[FR] PIPERIDINES A SUBSTITUTION HETEROCYCLIQUE ET UTILISATIONS DE CES DERNIERES
申请人:SYNAPTIC PHARMACEUTICAL CORPORATION
公开号:WO1998057940A1
公开(公告)日:1998-12-23
(EN) This invention is directed to oxazolidinone compounds which are selective antagonists for human $g(a)1A receptors. This invention is also related to uses of these compounds for lowering intraocular pressure, inhibiting cholesterol synthesis, relaxing lower urinary tract tissue, the treatment of benign prostatic hyperplasia, impotency, cardiac arrhythmia and for the treatment of any disease where the antagonism of the $g(a)1A receptor may be useful. The invention further provides a pharmaceutical composition comprising a therapeutically effective amount of the above-defined compounds and a pharmaceutically acceptable carrier.(FR) Cette invention concerne des composés d'oxazolidinone qui sont des antagonistes sélectifs des récepteurs $g(a)1A humains. Cette invention concerne également les différentes utilisations de ces composés pour réduire la pression intra-oculaire, empêcher la synthèse du cholestérol, détendre les tissues du tractus urinaire inférieur, traiter l'hyperplasie prostatique bénigne, l'impuissance, l'arythmie cardiaque et pour traiter toute maladie dans laquelle l'antagoniste du récepteur $g(a)1A peut être utile. Cette invention concerne également une composition pharmaceutique contenant une quantité thérapeutiquement efficace des composés présentés ci-avant ainsi qu'un support pharmaceutiquement acceptable.