An efficient synthesis of some 6-substituted 4,8-diaza-3,3,9,9- tetramethylundeca-2,10-dione dioximes (propylene amine oximes, PnAOs): Ligands for 99mTc complexes used in structure distribution relationship (SDR) studies
摘要:
Technetium complexes of the ligand PnAO [4,8-diaza-3,3,9,9-fetramethylundeca-2,10-dione dioximes (3)] are of interest as commercial radiopharmaceuticals. In general, PnAOs are synthesized by alkylation of a propylenediamine derivative with 3-chloro-3-methyl-2-nitrosobutane (2). This alkylation reaction proved to be low yielding. With modestly bulky substituents at the 2-position of 1,3-diaminopropane, little or none of the required PnAO was obtained. As a result, an alternative approach of the synthesis of PnAO was developed. This method involved the alkylation of the propylenediamine with 3-bromo-3-methylbutan-2-one (18) followed by oximation of the resulting diamine-diketone (19). By this method, PnAOs were prepared in goad yield, even with bulky C-2 substituents. Fourteen PnAO derivatives were prepared by this method. We also describe the syntheses of several new propylenediamine derivatives.
[EN] GLP-1R MODULATING COMPOUNDS<br/>[FR] COMPOSÉS MODULATEURS DE GLP-1R
申请人:GILEAD SCIENCES INC
公开号:WO2021081207A1
公开(公告)日:2021-04-29
The present disclosure provides GLP-1R agonists, and compositions, methods, and kits thereof. Such compounds are generally useful for treating a GLP-1R mediated disease or condition in a human.
Diagnostic imaging methods using rhenium and technetium complexes
申请人:Bracco International B.V.
公开号:US05688487A1
公开(公告)日:1997-11-18
Novel methods, processes and metal complexes attached to a hypoxia-localizing moiety comprising a metal, preferably radionuclide of rhenium or technetium; a hypoxia-localizing moiety; and, a complexing ligand, wherein said ligand and said radionuclide combined have cell membrane permeabilities greater than that of sucrose, are disclosed.
Synthesis of nitroimidazole substituted 3,3,9,9-tetramethyl-4,8-diazaundecane-2,10-dione dioximes (propylene amine oximes, PnAOs): Ligands for technetium-99m complexes with potential for imaging hypoxic tissue
作者:Kondareddiar Ramalingam、Natarajan Raju、Palaniappa Nanjappan、David P. Nowotnik
DOI:10.1016/0040-4020(95)00042-7
日期:1995.3
synthesized as precursors to nitroimidazole-substituted 3,3,9,9-tetramethyl-4,8-diazaundecane-2,10-dionedioxime (21b, 21d, 21e and 26a-26c) (PropyleneAmineOxime, PnAO) ligands. 3-Chloro-3-methyl-1-(2- or 4-nitro-I H-imidazol-1-yl)-2-nitroso-butanes (18a-e) required for the syntheses of nitroimidazolesubstitutedpropyleneamineoxime (PnAO) ligands were prepared from the corresponding dimethylallyl-nitroimidazoles
Synthesis and antibacterial evaluation of new, unsymmetrical triaryl bisamidine compounds
作者:Son T. Nguyen、John D. Williams、Michelle M. Butler、Xiaoyuan Ding、Debra M. Mills、Tommy F. Tashjian、Rekha G. Panchal、Susan K. Weir、Chaeho Moon、Hwa-Ok Kim、Jeremiah A. Marsden、Norton P. Peet、Terry L. Bowlin
DOI:10.1016/j.bmcl.2014.05.094
日期:2014.8
is a benzimidazole, imidazopyridine, benzofuran, benzothiophene, pyrimidine or benzene ring. When the [HetAr/Ar] unit is a 5,6-bicyclic heterocycle, it is oriented such that the 5-membered ring portion is connected to the [linker] unit and the 6-membered ring portion is connected to the [Am] unit. Among the 34 compounds in this series, compounds with benzofuran as the [HetAr/Ar] unit showed the highest
在此,我们描述了一种新型不对称三芳基双脒化合物系列[Am]-[吲哚]-[连接基]-[HetAr/Ar]-[Am]的合成和抗菌评价,其中[Am]是脒或氨基[连接体]为苯环、噻吩环或吡啶环,[HetAr/Ar]为苯并咪唑、咪唑并吡啶、苯并呋喃、苯并噻吩、嘧啶或苯环。[HetAr/Ar]单元为5,6-二环杂环时,其取向为5元环部分与[连接基]单元连接,6元环部分与[Am]连接。单元。在该系列的 34 种化合物中,以苯并呋喃为 [HetAr/Ar] 单元的化合物显示出最高的效力。在三芳基核心中引入氟原子或甲基会产生更有效的类似物。双脒对细菌更具活性,而单脒对哺乳动物细胞更活性(如低 CC 50值所示)。重要的是,我们发现化合物P12a (MBX 1887) 具有相对较窄的抗菌谱和非常高的 CC 50值。化合物P12a已扩大规模,目前正在接受进一步的治疗应用评估。
Carbazole-containing amides and ureas: Discovery of cryptochrome modulators as antihyperglycemic agents
作者:Paul S. Humphries、Ross Bersot、John Kincaid、Eric Mabery、Kerryn McCluskie、Timothy Park、Travis Renner、Erin Riegler、Tod Steinfeld、Eric D. Turtle、Zhi-Liang Wei、Erik Willis
DOI:10.1016/j.bmcl.2017.12.051
日期:2018.2
A series of novel carbazole-containing amides and ureas were synthesized. A structure–activity relationship study of these compounds led to the identification of potent cryptochrome modulators. Based on the desired pharmacokinetic/pharmacodynamic parameters and the results of efficacy studies in db/db mice, compound 50 was selected for further profiling.