Synthesis, SAR, and Biological Evaluation of Oximino-Piperidino-Piperidine Amides. 1. Orally Bioavailable CCR5 Receptor Antagonists with Potent Anti-HIV Activity
摘要:
We previously reported the discovery of 4-[(Z)-(4-bromophenyl)(ethoxyimino)methyl]-1'-[(2,4-dimethyl-3-pyridinyl)carbonyl] -4'-methyl-1,4'-bipiperidine N-oxide 1 (SCH 351125) as an orally bioavailable human CCR5 antagonist for the treatment of HIV-1 infection. Herein, we describe in detail the discovery of 1 from our initial lead compound as well as the synthesis and SAR studies directed toward optimization of substitution at the phenyl, oxime, and right-hand side amide groups in the oximino-piperidino-piperidine series. Substitutions (4-Br, 4-CF3, 4-OCF3, 4-SO2Me, and 4-Cl) at the phenyl group are well-tolerated, and small alkyl substitutions (Me, Et, Pr-n, Pr-i, and cyclopropyl methyl) at the oxime moiety are preferred for CCR5 antagonism. The 2,6-dimethylnicotinamide N-oxide moiety is the optimal choice for the right-hand side. Several compounds in this series, including compound 1, exhibited excellent antiviral activity in vitro. Compound 1, which has a favorable pharmacokinetic profile in rodents and primates, excellent oral bioavailability, and potent antiviral activity against a wide range of primary HIV-1 isolates, is a potentially promising new candidate for treatment of HIV-1 infection.
Conformation-activity relationship study of 5-HT3 receptor antagonists and a definition of a model for this receptor site
摘要:
A conformation-activity relationship study of 5-HT3 receptor antagonists was used to define a pharmacophore and receptor map to qualitatively account for their activity. The design and synthesis of specific keto-amino-indole derivatives that are potent 5-HT3 receptor antagonists gave some support to the model.
[EN] 1, 4-SUBSTITUTED PIPERIDINE DERIVATIVES<br/>[FR] DÉRIVÉS DE PIPÉRIDINE 1,4-SUBSTITUÉS
申请人:CEPHALON INC
公开号:WO2016205633A1
公开(公告)日:2016-12-22
Described herein are 1,4-substituted piperidine compounds according to Formula (I) that have demonstrated activity as fatty acid synthase inhibitors. Also described herein are pharmaceutical compositions containing the described 1,4-substituted piperidine compounds, and methods of treating diseases mediated by fatty acid synthase, by administering one or more of the compounds or pharmaceutical formulations described herein. Also described herein are methods of synthesizing the compounds described, including the described 1,4-substituted piperidine compounds and synthetic intermediates useful in those syntheses.
SUBSTITUTED 5H-PYRIMIDO[5,4-B]INDOLES, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF FOR TREATING NON-SOLID MALIGNANT TUMORS OF THE BLOOD-PRODUCING SYSTEM
申请人:Reichelt Claudia
公开号:US20110021511A1
公开(公告)日:2011-01-27
The invention relates to compounds of general formula 1
to processes for the production thereof, to pharmaceutical preparations containing said compounds and/or physiologically compatible salts and/or solvates which can be produced therefrom as well as to the pharmaceutical use of said compounds, the salts or solvates thereof as inductors of apoptosis in the case of non-solid malignant tumors of the hematopoietic system, in particular in the case of leukemias and lymphomas, more particularly in the case of leukemic B lymphocytes.
1-Aminopyridinium Ylides as Monodentate Directing Groups for sp<sup>3</sup> C–H Bond Functionalization
作者:Ky Khac Anh Le、Hanh Nguyen、Olafs Daugulis
DOI:10.1021/jacs.9b06643
日期:2019.9.18
1-Aminopyridinium ylides are efficientdirecting groups for palladium-catalyzed β-arylation and alkylation of sp3 C-H bonds in carboxylic acid derivatives. The efficiency of these directing groups depends on the substitution at the pyridine moiety. The unsubstituted pyridine-derived ylides allow functionalization of primary C-H bonds, while methylene groups are unreactive in the absence of external
PdII‐catalyzed C(sp3)−Harylation of saturatedheterocycles with a wide range of aryl iodides is enabled by an N‐heterocyclic carbene (NHC) ligand. A C(sp3)−H insertion step by the PdII/NHC complex in the absence of ArI is demonstrated experimentally for the first time. Experimental data suggests that the previously established NHC‐mediated Pd0/PdII catalytic manifold does not operate in this reaction