Phenylpropenamide derivatives: Anti-hepatitis B virus activity of the Z isomer, SAR and the search for novel analogs
摘要:
Phenylpropenamides have been reported to be a class of non-nucleoside inhibitors of the hepatitis B virus (HBV). This class of compounds was explored with the objective of developing potent anti-HBV agents, with a novel mechanism of action, that could be combined with nucleos(t) ide analogs currently used to treat HBV infection. To accomplish this objective a series of substituted arylpropenamide derivatives were prepared and the E and Z geometrical isomers were separated. The structural identity of each of the E and Z isomers was determined by single crystal X-ray crystallography. Contrary to previous reports, the activity of this class of molecules resides in the Z isomer. Further structure-activity relationship studies around the active Z isomer identified compounds that displayed potent antiviral activity against HBV with EC90 value of approximately 0.5 mu M in vitro. Attempts to develop ring constrained analogs did not lead to active HBV inhibitors. (C) 2011 Elsevier Ltd. All rights reserved.
Phenylpropenamide derivatives: Anti-hepatitis B virus activity of the Z isomer, SAR and the search for novel analogs
摘要:
Phenylpropenamides have been reported to be a class of non-nucleoside inhibitors of the hepatitis B virus (HBV). This class of compounds was explored with the objective of developing potent anti-HBV agents, with a novel mechanism of action, that could be combined with nucleos(t) ide analogs currently used to treat HBV infection. To accomplish this objective a series of substituted arylpropenamide derivatives were prepared and the E and Z geometrical isomers were separated. The structural identity of each of the E and Z isomers was determined by single crystal X-ray crystallography. Contrary to previous reports, the activity of this class of molecules resides in the Z isomer. Further structure-activity relationship studies around the active Z isomer identified compounds that displayed potent antiviral activity against HBV with EC90 value of approximately 0.5 mu M in vitro. Attempts to develop ring constrained analogs did not lead to active HBV inhibitors. (C) 2011 Elsevier Ltd. All rights reserved.
Reaction of Tetramethyl Ethynyldiphosphonate with Diethyl 2-Amidomalonates
作者:D. M. Egorov、A. A. Petrosyan、Yu. L. Piterskaya、N. I. Svintsitskaya、A. V. Dogadina
DOI:10.1134/s1070363218110294
日期:2018.11
Stereoselective reaction of tetramethyl ethynyldiphosphonate with diethyl 2-amidomalonates yielded Z-vinyldiphosphonates, namely Z-2-[1,2-bis(dimethoxyphosphoryl)-2-alkyl(aryl)amidovinyl]malonic acid diethyl esters. A possibility of cyclization of the amidomalonate fragment of the obtained alkenes with the formation of an oxazole-substituted Z-vinyldiphosphonate was shown.
Electrochemical Synthesis of Unnatural Amino Acids via Anodic Decarboxylation of <i>N</i>-Acetylamino Malonic Acid Derivatives
作者:Olesja Koleda、Katrina Prane、Edgars Suna
DOI:10.1021/acs.orglett.3c02687
日期:2023.11.10
α-disubstituted cyclic amino acidderivatives in medicinal chemistry urges for analogue design with improved pharmacokinetic properties. Herein, we disclose an electrochemical approach toward unnatural THF- and THP-containing amino acidderivatives that relies on anodic decarboxylation-intramolecular etherification of inexpensive and readily available N-acetylamino malonicacid monoesters under Hofer–Moest
α,α-二取代环状氨基酸衍生物在药物化学中的广泛应用迫切需要具有改进的药代动力学特性的类似物设计。在此,我们公开了一种针对非天然含THF和THP的氨基酸衍生物的电化学方法,该方法依赖于廉价且容易获得的N-乙酰氨基丙二酸单酯在Hofer-Moest反应条件下的阳极脱羧-分子内醚化。脱羧环化在恒定电流条件下在未分裂的细胞中在水性介质中进行,无需添加任何碱。在组织蛋白酶 K 抑制剂 balicatib 中,用含 THP 的氨基酸支架成功生物等排取代 1-氨基环己烷-1-羧酸亚基,有助于降低亲脂性,同时保留低纳摩尔酶抑制效力和相当的微粒体稳定性。
Structurally Divergent Synthesis of Azetidines, 5,6‐Dihydro‐1,3‐oxazines and 2,3‐Dihydro‐1,4‐oxazines through Palladium‐Catalyzed Tandem Allylic Substitution Reaction
A regiodivergent synthesis of azetidines, 5,6-dihydro-1,3-oxazines and 2,3-dihydro-1,4-oxazines has been achieved through palladium-catalyzed tandem allylicsubstitution reaction. This protocol provides a variety of heterocycles in satisfactory yields with good to excellent regioselectivities under mild reaction conditions.