Pergolide undergoes extensive first-pass hepatic metabolism and its metabolites are excreted mainly in the urine. (A2932)
Route of Elimination: The major route of excretion is the kidney.
Half Life: 27 hours
普拉克索经过广泛的首次通过肝脏代谢,其代谢物主要在尿液中排出。(A2932)
消除途径:主要的排泄途径是肾脏。
半衰期:27小时
Pergolide undergoes extensive first-pass hepatic metabolism and its metabolism are excreted mainly in the urine. (A2932)
Route of Elimination: The major route of excretion is the kidney.
Half Life: 27 hours
The dopamine D<sub>2</sub> receptor is a 7-transmembrane G-protein coupled receptor associated with G<sub>i</sub> proteins. In lactotrophs, stimulation of dopamine D<sub>2</sub> receptor causes inhibition of adenylyl cyclase, which decreases intracellular cAMP concentrations and blocks IP3-dependent release of Ca<sup>2+</sup> from intracellular stores. Decreases in intracellular calcium levels may also be brought about via inhibition of calcium influx through voltage-gated calcium channels, rather than via inhibition of adenylyl cyclase. Additionally, receptor activation blocks phosphorylation of p42/p44 MAPK and decreases MAPK/ERK kinase phosphorylation. Inhibition of MAPK appears to be mediated by c-Raf and B-Raf-dependent inhibition of MAPK/ERK kinase. Dopamine-stimulated growth hormone release from the pituitary gland is mediated by a decrease in intracellular calcium influx through voltage-gated calcium channels rather than via adenylyl cyclase inhibition. Stimulation of dopamine D<sub>2</sub> receptors in the nigrostriatal pathway leads to improvements in coordinated muscle activity in those with movement disorders.
Ergoline alkaloids have been shown to have the significant affinity towards the 5-HT1 and 5-HT2 serotonin receptors, D1 and D2 dopamine receptors, and alpha-adrenergic receptors. This can result in a number of different effects, including vasoconstriction, convulsions, and hallucinations. Pergolide is a potent dopamine receptor agonist. It directly stimulates post-synaptic dopamine receptors at both D1 and D2 receptor sites in the nigrostriatal system. This can reduce the motor complications associated with Parkinson's. Agonism of 5-HT2B and 5-HT1B receptors is believed to be responsible for the fibrotic reactions and cardiac valvular disease associated with pergolide use. (A365, A2933, A2934, A2914, A2915, A2916)
Pergolide has been reported to cause serum aminotransferase elevations in a small proportion of patients, but these abnormalities are usually mild, asymptomatic and self-limiting even without dose adjustment. In addition, pergolide has been implicated in a small number of cases of clinically apparent, acute liver injury, but the frequency, severity, clinical characteristics and typical pattern of enzyme elevations have not been characterized. Thus, pergolide is may be a rare cause of clinically apparent liver injury.
Semisynthetic Dimers of Antiparkinsonic Ergot Alkaloids
摘要:
1,1-Linked dimers of semisynthetic ergoline alkaloids with antiparkinsonic activity were prepared in 60 - 63% yield from the parent compounds (pergolide, terguride) by action of alpha,omega -dihalogenalkanes in DMSO/KOH. N-1-omega -Halogenalkyl pergolide and terguride precursors were used for the synthesis of non-symmetric dimers. N-6 Alkylation was achieved (yield 18 - 28%) using 1,6-dihalogenohexane in DMF/K2CO3.
Simple and selective one-pot replacement of the N-methyl group of tertiary amines by quaternization and demethylation with sodium sulfide or potassium thioacetate: an application to the synthesis of pergolide
[EN] ACC INHIBITORS AND USES THEREOF<br/>[FR] INHIBITEURS DE L'ACC ET UTILISATIONS ASSOCIÉES
申请人:GILEAD APOLLO LLC
公开号:WO2017075056A1
公开(公告)日:2017-05-04
The present invention provides compounds I and II useful as inhibitors of Acetyl CoA Carboxylase (ACC), compositions thereof, and methods of using the same.
[EN] COMPOUNDS AND THEIR USE AS BACE INHIBITORS<br/>[FR] COMPOSÉS ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE BACE
申请人:ASTRAZENECA AB
公开号:WO2016055858A1
公开(公告)日:2016-04-14
The present application relates to compounds of formula (I), (la), or (lb) and their pharmaceutical compositions/preparations. This application further relates to methods of treating or preventing Αβ-related pathologies such as Down's syndrome, β- amyloid angiopathy such as but not limited to cerebral amyloid angiopathy or hereditary cerebral hemorrhage, disorders associated with cognitive impairment such as but not limited to MCI ("mild cognitive impairment"), Alzheimer's disease, memory loss, attention deficit symptoms associated with Alzheimer's disease, neurodegeneration associated with diseases such as Alzheimer's disease or dementia, including dementia of mixed vascular and degenerative origin, pre-senile dementia, senile dementia and dementia associated with Parkinson's disease.
[EN] METHYL OXAZOLE OREXIN RECEPTOR ANTAGONISTS<br/>[FR] MÉTHYLOXAZOLES ANTAGONISTES DU RÉCEPTEUR DE L'OREXINE
申请人:MERCK SHARP & DOHME
公开号:WO2016089721A1
公开(公告)日:2016-06-09
The present invention is directed to methyl oxazole compounds which are antagonists of orexin receptors. The present invention is also directed to uses of the compounds described herein in the potential treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The present invention is also directed to compositions comprising these compounds. The present invention is also directed to uses of these compositions in the potential prevention or treatment of such diseases in which orexin receptors are involved.
4' SUBSTITUTED COMPOUNDS HAVING 5-HT6 RECEPTOR AFFINITY
申请人:Dunn Robert
公开号:US20080318941A1
公开(公告)日:2008-12-25
The present disclosure provides compounds having affinity for the 5-HT
6
receptor which are of the formula (I):
wherein R
1
, R
2
, R
5
, R
6
, B, D, E, G, Q, x and n are as defined herein. The disclosure also relates to methods of preparing such compounds, compositions containing such compounds, and methods of use thereof.
Heterobicyclic compounds of Formula (I):
or a pharmaceutically-acceptable salt, tautomer, or stereoisomer thereof, as defined in the specification, and compositions containing them, and processes for preparing such compounds. Provided herein also are methods of treating disorders or diseases treatable by inhibition of PDE10, such as obesity, non-insulin dependent diabetes, schizophrenia, bipolar disorder, obsessive-compulsive disorder, Huntington's Disease, and the like.
Formula (I)的杂环化合物:
或其药用可接受的盐、互变异构体或立体异构体,如规范中所定义,并含有它们的组合物,以及制备这种化合物的方法。本文还提供了通过抑制PDE10来治疗由此可治疗的疾病或疾病的方法,如肥胖症、非胰岛素依赖型糖尿病、精神分裂症、躁郁症、强迫症、亨廷顿病等。