In Vitro and in Vivo Evaluation of Dihydropyrimidinone C-5 Amides as Potent and Selective α1A Receptor Antagonists for the Treatment of Benign Prostatic Hyperplasia
摘要:
alpha(1) Adrenergic receptors mediate both vascular and lower urinary tract tone, and alpha(1) receptor antagonists such as terazosin (1b) are used to treat both hypertension and benign prostatic hyperplasia (BPH). Recently, three different subtypes of this receptor have been identified, with the alpha(1A) receptor being most prevalent in lower urinary tract tissue. This paper explores 4-aryldihydropyrimidinones attached to an aminopropyl-4-arylpiperidine via a C-5 amide as selective alpha(1A) receptor subtype antagonists. In receptor binding assays, these types of compounds generally display K-i values for the alpha(1a) receptor subtype <1 nM while being greater than 100-fold selective versus the alpha(1b) and alpha(1d) receptor subtypes. Many of these compounds were also evaluated in vivo and found to be more potent than terazosin in both a rat model of prostate tone and a dog model of intra-urethral pressure without significantly affecting blood pressure. While many of the compounds tested displayed poor pharmacokinetics, compound 48 was found to have adequate bioavailability (>20%) and half-life (>6 h) in both rats and dogs. Due to its selectivity for the alpha(1a) over the alpha(1d) and alpha(1d) receptors as well as its favorable pharmacokinetic profile, 48 has the potential to relieve the symptoms of BPH without eliciting effects on the cardiovascular system.
In Vitro and in Vivo Evaluation of Dihydropyrimidinone C-5 Amides as Potent and Selective α1A Receptor Antagonists for the Treatment of Benign Prostatic Hyperplasia
摘要:
alpha(1) Adrenergic receptors mediate both vascular and lower urinary tract tone, and alpha(1) receptor antagonists such as terazosin (1b) are used to treat both hypertension and benign prostatic hyperplasia (BPH). Recently, three different subtypes of this receptor have been identified, with the alpha(1A) receptor being most prevalent in lower urinary tract tissue. This paper explores 4-aryldihydropyrimidinones attached to an aminopropyl-4-arylpiperidine via a C-5 amide as selective alpha(1A) receptor subtype antagonists. In receptor binding assays, these types of compounds generally display K-i values for the alpha(1a) receptor subtype <1 nM while being greater than 100-fold selective versus the alpha(1b) and alpha(1d) receptor subtypes. Many of these compounds were also evaluated in vivo and found to be more potent than terazosin in both a rat model of prostate tone and a dog model of intra-urethral pressure without significantly affecting blood pressure. While many of the compounds tested displayed poor pharmacokinetics, compound 48 was found to have adequate bioavailability (>20%) and half-life (>6 h) in both rats and dogs. Due to its selectivity for the alpha(1a) over the alpha(1d) and alpha(1d) receptors as well as its favorable pharmacokinetic profile, 48 has the potential to relieve the symptoms of BPH without eliciting effects on the cardiovascular system.
Morpholinone and morpholine derivatives and uses thereof
申请人:Synaptic Pharmaceutical Corporation
公开号:US06218390B1
公开(公告)日:2001-04-17
This invention is directed to morpholinone and morpholine derivatives 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, sympathetic mediated pain, migraine, and for the treatment of any disease where the 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.
[EN] DIHYDROPYRIMIDINES AND USES THEREOF<br/>[FR] DIHYDROPYRIMIDINES ET LEURS UTILISATIONS
申请人:SYNAPTIC PHARMACEUTICAL CORPORATION
公开号:WO1996014846A1
公开(公告)日:1996-05-23
(EN) This invention is directed to dihydropyrimidine compounds which are selective antagonists for human $g(a)1C 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, impotence, cardiac arrhythmia and for the treatment of any disease where the antagonism of the $g(a)1C 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 se rapporte à des composés dihydropyrimidine qui sont des antagonistes sélectifs pour les récepteurs $g(a)1C humains, ainsi qu'aux utilisations de ces composés dans la réduction de la pression intraoculaire, l'inhibition de la synthèse du cholestérol, le relâchement des tissus inférieurs des voies urinaires, le traitement de l'hyperplasie prostatique bénigne, l'impuissance, l'arythmie cardiaque et le traitement de toutes maladies pour lesquelles l'antagonisme du récepteur $g(a)1C peut être utile. L'invention se rapporte encore à une composition pharmaceutique comprenant une quantité thérapeutiquement efficace des composés définis ci-dessus et à un excipient pharmaceutiquement acceptable.
[EN] DIDHYDROPYRIMIDINES AND USES THEREOF<br/>[FR] DIHYDROPYRIMIDINES ET LEURS EMPLOIS
申请人:SYNAPTIC PHARMACEUTICAL CORPORATION
公开号:WO1997042956A1
公开(公告)日:1997-11-20
(EN) This invention is directed to dihydropyrimidine 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) L'invention concerne des composés de dihydropyrimidine qui sont des antagonistes sélectifs de récepteurs humains $g(a)1A. L'invention concerne également les emplois desdits composés pour abaisser la pression intraoculaire, inhiber la synthèse du cholestérol, soulager le tissu du bas appareil urinaire, ainsi que pour traiter l'hyperplasie prostatique bénigne, l'impuissance, l'arythmie cardiaque et toute autre maladie pour laquelle l'antagonisme du récepteur $g(a)1A peut être utile. L'invention décrit en outre une composition pharmaceutique contenant une dose thérapeutiquement efficace des composés susmentionnés et un excipient pharmaceutiquement admissible.
This invention is directed to dihydropyrimidine compounds 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 the 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.
This invention is directed to dihydropyrimidine compounds of the following formula:
which are selective antagonists for human &agr;1C 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, impotence, cardiac arrhythmia and for the treatment of any disease where antagonism of the &agr;1C 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.