A high-yield route to synthesize the P-glycoprotein radioligand [ C]N-desmethyl-loperamide and its parent radioligand [ C]loperamide
摘要:
N-Desmethyl-loperamide and loperamide were synthesized from a, a-diphenyl-c-butyrolactone and 4-(4-chlorophenyl)-4-hydroxypiperidine in five and four steps with 8% and 16% overall yield, respectively. The amide precursor was synthesized from 4-bromo-2,2-diphenylbutyronitrile and 4-(4-chlorophenyl)-4-hydroxypiperidine in 2 steps with 21-57% overall yield. [C-11] N-Desmethyl-loperamide and [C-11] loperamide were prepared from their corresponding amide precursor and N-desmethyl-loperamide with [C-11] CH3OTf through N-[C-11] methylation and isolated by HPLC combined with solid-phase extraction (SPE) in 20-30% and 10-15% radiochemical yields, respectively, based on [C-11] CO2 and decay corrected to end of bombardment (EOB), with 370-740 GBq/lmol specific activity at EOB. (C) 2013 Elsevier Ltd. All rights reserved.
4-[(bicycle heterocyclyl)-methyl and -hetero]-piperidines
申请人:Janssen Pharmaceutica, N.V.
公开号:US04695575A1
公开(公告)日:1987-09-22
4-[(Bicyclic heterocyclyl)methyl and -hetero]-piperidines having antihistaminic and serotonin-antagonistic properties which compounds are useful agents in the treatment of allergic diseases.
[EN] MTP INHIBITING ARYL PIPERIDINES OR PIPERAZINES SUBSTITUTED WITH 5-MEMBERED HETEROCYCLES<br/>[FR] PIPERIDINES D'ARYLE OU PIPERAZINES SUBSTITUEES PAR DES HETEROCYCLES A 5 RAMIFICATIONS INHIBANT LA MTP
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2005085226A1
公开(公告)日:2005-09-15
The present invention is concerned with novel aryl piperidine or piperazine compounds substituted with certain 5-membered heterocycles having apoB secretion/MTP inhibiting activity and concomitant lipid lowering activity. The invention further relates to methods for preparing such compounds, pharmaceutical compositions comprising said compounds as well as the use of said compounds as a medicine for the treatment of hyperlipidemia, obesity and type II diabetes (Formula (I)). The invention further relates to methods for preparing such compounds, pharmaceutical compositions comprising said compounds as well as the use of said compounds as a medicine for the treatment of atherosclerosis, pancreatitis, obesity, hypertriglyceridemia, hypercholesterolemia, hyperlipidemia, diabetes and type II diabetes.
New μ-opioid receptor (MOR) agonists containing piperazine and homopiperazine moieties in the structures were synthesized and their affinities to and agonist potencies on MOR were evaluated. Among the synthesized compounds, 4-[4-(2-methoxyphenyl)piperazin-1-yl]-N,N-dimethyl-2,2-diphenylbutanamide (20Aa) showed the highest affinity to the human MOR expressed in Chinese hamster ovary (CHO)-K1 cells, and the highest agonist potency on the MOR in isolated guinea-pig ileum preparation.
Scaffold hopping combines with biochemical studies and medicinal chemistry optimizations, leading to potent inhibitors of the menin–MLL interaction.
支架跳跃结合生物化学研究和药物化学优化,导致了menin-MLL相互作用的强效抑制剂的产生。
Spray formulations of antihyperalgesic opiates and method of treating
申请人:Adolor Corporation
公开号:US05798093A1
公开(公告)日:1998-08-25
Spray formulations of anti-pruritic opiates having a peripheral selectivity of 251 to 1,280 in a solvent mixture of up to 15% w/w alcohol selected from the group consisting of ethyl, propyl and isopropyl alcohol and water greater than or equal to 85% w/w water.