Abstract:
:Novel pyrazine carboxamides bearing hydrophilic poly(ethylene glycol) (PEG) moieties were designed, synthesized, and evaluated for use as fluorescent glomerular filtration rate (GFR) tracer agents. Among these, compounds 4d and 5c that contain about 48 ethylene oxide units in the PEG chain exhibited the most favorable physicochemical and renal clearance properties. In vitro studies show that these two compounds have low plasma protein binding, a necessary condition for renal excretion. In vivo animal model results show that 4d and 5c have a higher urine recovery of the injected dose than iothalamate (a commonly considered gold standard GFR agent). Pharmacokinetic studies show that these two compounds exhibit a plasma clearance equivalent to iothalamate, but with a faster (i.e. lower) terminal half-life than iothalamate (possibly from restricted distribution into the extracellular space due to large molecular size and hydrodynamic volume). Furthermore, the plasma clearance of 4d and 5c remained unchanged upon blockage of the tubular secretion pathway with probenecid, a necessary condition for establishment of clearance via glomerular filtration exclusively. Finally, noninvasive real-time monitoring of this class of compounds was demonstrated by pharmacokinetic clearance of 5c by optical measurements in rat model, which correlates strongly with plasma concentration of the tracer. Hence, 4d and 5c are promising candidates for translation to the clinic as exogenous fluorescent tracer agents in real-time point-of-care monitoring of GFR.
journal_name
Bioorg Med Chemjournal_title
Bioorganic & medicinal chemistryauthors
Poreddy AR,Neumann WL,Freskos JN,Rajagopalan R,Asmelash B,Gaston KR,Fitch RM,Galen KP,Shieh JJ,Dorshow RBdoi
10.1016/j.bmc.2012.03.015subject
Has Abstractpub_date
2012-04-15 00:00:00pages
2490-7issue
8eissn
0968-0896issn
1464-3391pii
S0968-0896(12)00194-0journal_volume
20pub_type
杂志文章abstract::Poly(ADP-ribose) glycohydrolase (PARG) plays an essential role in poly(ADP-ribose) (PAR) turnover, and thereby regulating DNA transactions, such as DNA repair, replication, transcription and recombination. Here, we examined the inhibitory activities of 6-hydroxy-3H-xanthene-3-one (HXO) derivatives and analyzed their b...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2019.115249
更新日期:2020-02-01 00:00:00
abstract::The Gram-positive bacterium Streptococcus pneumoniae is a human respiratory tract pathogen that contributes significantly to global mortality and morbidity. It was recently shown that this bacterial pathogen depends on a conserved β-carbonic anhydrase (CA, EC 4.2.1.1) for in vitro growth in environmental ambient air a...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2010.11.031
更新日期:2011-01-01 00:00:00
abstract::V-RAF murine sarcoma viral oncogene homolog B1 (BRAF) is a serine/threonine-specific protein kinase that is mutated with high frequency in cutaneous melanoma, and many other cancers. Inhibition of mutant BRAF is an attractive therapeutic approach for the treatment of melanoma. A triarylimidazole BRAF inhibitor bearing...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2010.06.031
更新日期:2010-09-15 00:00:00
abstract::Seven new triterpenoid saponins (1-7), have been isolated and elucidated from the roots of Gypsophila oldhamiana together with five known triterpenoid saponins (8-12). These saponins which could be classified into three series: 3-O-monoglucosides (1, 8, 9), 28-O-monoglucosides (2-4, 12) and 3, 28-O-bidesmosides (5-7, ...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2007.12.053
更新日期:2008-03-15 00:00:00
abstract::Introduction of an alkylcarboxylic acid unit, which is a partial structure of endogenous peroxisome proliferator-activated receptor (PPAR) ligands, into a phenethylphenylphthalimide skeleton, which possesses liver X receptor (LXR) antagonistic activity, afforded novel PPAR ligands. The results of structure-activity re...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2011.03.065
更新日期:2011-05-15 00:00:00
abstract::Combretastatin A-4 (CA-4) is a highly cytotoxic natural product and several derivatives have been prepared which underwent clinical trial. These investigations revealed that the cis-stilbene moiety of the natural product is prone to undergo cis/trans isomerization under physiological conditions, reducing the overall a...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2019.07.048
更新日期:2019-10-01 00:00:00
abstract::All-trans-retinoic acid (ATRA) as a physiological metabolite of vitamin A is widely applied in the treatment of cancer, skin, neurodegenerative and autoimmune diseases. CYP26A1 enzyme, induced by ATRA in liver and target tissues, metabolizes ATRA into 4-hydroxyl-RA. Inhibition of CYP26A1 metabolic enzyme represents a ...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2015.08.019
更新日期:2015-10-15 00:00:00
abstract::The synthesis and antitumoral activity of ester and amide derivatives of 2-arylamino-6-trifluoromethyl-3-pyridinecarboxylic acids 8-58 is described. Trifluoromethylpyridine derivatives 8-58 were evaluated for their anticancer activity toward human tumoral cell lines by the National Cancer Institute (NCI). Most of them...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2007.11.069
更新日期:2008-03-01 00:00:00
abstract::Various 4-analogues of podophyllotoxin and epipodophyllotoxin were obtained via the formation of the corresponding 4-keto derivatives. Methyloximation of podophyllotoxone, followed by subsequent catalytic hydrogenation, gave stereoselective access to 4-alpha-amino-4-deoxypodophyllotoxin and from there, to the correspo...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/s0968-0896(02)00255-9
更新日期:2002-11-01 00:00:00
abstract::3- And 4-imidazol-1-yl-methyl substituted biphenyl compounds (named as meta- and para-substituted compounds) were synthesized bearing additional substituents in 3'-/4'-position as inhibitors of P450 17 (17alpha-hydroxylase-C17,20-lyase). P450 17 is the key enzyme of androgen biosynthesis. Its inhibition is a novel the...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/s0968-0896(99)00160-1
更新日期:1999-09-01 00:00:00
abstract::Resveratrol (3,5,4'-trans-trihydroxystibene) is a natural phytoalexin present in grapes and red wine, which possesses a variety of biological activities including antioxidant activity. In order to find more active antioxidant with resveratrol as the lead compound we synthesized 4,4'-dihydroxy-trans-stilbene (4,4'-DHS)...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2009.02.014
更新日期:2009-03-15 00:00:00
abstract::Influenza is a continuing world-wide public health problem that causes significant morbidity and mortality during seasonal epidemics and sporadic pandemics. The purpose of the study was synthesis and investigation of antiviral activity of camphor-based symmetric diimines and diamines. A set of C2-symmetric nitrogen-co...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2014.02.038
更新日期:2014-04-01 00:00:00
abstract::A new class of 4-aminoquinoline derivatives based on the natural product isatin scaffold were designed and synthesized for biological evaluation against three strains of the malaria parasite Plasmodium falciparum. These derivatives showed anti-plasmodial IC(50) values in the ranges of 1.3-0.079 and 2.0-0.050muM agains...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2005.02.037
更新日期:2005-05-02 00:00:00
abstract::Parviflorene F (1), a novel sesquiterpenoid dimer isolated from Curcuma parviflora Wall, is a cytotoxic compound. In this study, we examined the mechanism of its cytotoxic effect in HeLa cells. Treatment with 1 enhanced the mRNA and protein expression of TRAIL-R2 (tumor necrosis factor alpha-related apoptosis inducing...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2007.11.022
更新日期:2008-02-15 00:00:00
abstract::AKR1C3 is a promising therapeutic target for castration-resistant prostate cancer. Herein, an evaluation of in-house library discovered substituted pyranopyrazole as a novel scaffold for AKR1C3 inhibitors. Preliminary SAR exploration identified its derivative 19d as the most promising compound with an IC50 of 0.160 μM...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2018.10.044
更新日期:2018-12-01 00:00:00
abstract::In the amyloid cascade hypothesis, β-amyloid (Aβ) plaques is one of the major pathological biomarkers in the Alzheimer's disease (AD) brain. We report the synthesis and evaluation of novel radiofluorinated chalcones, [18F]4-dimethylamino-4'-fluoro-chalcone ([18F]DMFC) and [18F]4'-fluoro-4-methylamino-chalcone ([18F]FM...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2018.05.001
更新日期:2018-07-23 00:00:00
abstract::There is increasing evidence indicating that free radicals and oxygenases such as cyclooxygenase (COX) and lipoxygenase (LOX) are related to the onset and development of neurodegenerative diseases. In order to prevent and/or delay these diseases, the use of radical-scavenging antioxidants and inhibitors against oxygen...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2008.10.038
更新日期:2008-12-15 00:00:00
abstract::Carboranes (dicarba-closo-dodecaboranes) are a class of carbon-containing polyhedral boron-cluster compounds having remarkable chemical and thermal stability, and hydrophobic character. These features may allow application of carboranes as a new hydrophobic core structure in biologically active molecules that interact...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2005.06.061
更新日期:2005-12-01 00:00:00
abstract::Systematic replacement in the 3- or 4-position of the pyrrolidine ring at P1' proline was carried out. Compound 26, which has a Cl atom in the 4(S)-position was the most active among inhibitors substituted with other halogen atoms or other substituents. Furthermore, the replacement of the Z group in compound 26 with f...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/0968-0896(96)00130-7
更新日期:1996-08-01 00:00:00
abstract::The series of des-Cl (unsubstituted) and m-Cl phenyl analogues of PYR with various flexible 6-substituents were synthesized and studied for the binding affinities with highly resistant quadruple mutant (QM) DHFR. The derivatives carrying 4 atoms linker with a terminal carboxyl substituted on the aromatic ring exhibite...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2019.115158
更新日期:2019-12-15 00:00:00
abstract::Cyanocobalamin (vitamin B12) is an essential nutrient as well as a very useful carrier in drug delivery. Conjugates of vitamin B12 are investigated due to their wide range of therapeutic applications. We report the synthesis of six vitamin B12 conjugates, and the effect of conjugation on their solubilities and stabili...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2006.11.036
更新日期:2007-02-15 00:00:00
abstract::Activation of peroxisome proliferator-activated receptor (PPAR) subtypes offers a promising strategy for the treatment of diabetes mellitus and metabolic diseases. Selective and dual PPAR agonists have been developed and the systematic characterization of their structure-activity relationships (SAR) is of major signif...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2012.04.005
更新日期:2012-06-01 00:00:00
abstract::D3 receptor radioligands (E)-4,3,2-[11C]methoxy-N-4-(4-(2-methoxyphenyl)piperazin-1-yl)butyl-cinnamoylamides (4-[11C]MMC, [11C]1a; 3-[11C]MMC, [11C]1b; and 2-[11C]MMC, [11C]1c) were synthesized for evaluation as novel potential positron emission tomography (PET) imaging agents for brain D3 receptors. The new tracers 4...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2005.06.055
更新日期:2005-11-15 00:00:00
abstract::Streptococcus pneumoniae is among the major human pathogens. Several interactions of this bacterium with its host appear to have been mediated by bacterial cell wall components. Specifically, phosphorylcholine residues covalently attached to teichoic and lipoteichoic acids serve as anchors for many surface-located pro...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2005.06.060
更新日期:2005-12-01 00:00:00
abstract::A series of pyrrolobenzodiazepine-naphthalimide conjugates tethered through a piperazine ring system have been designed, synthesized, and evaluated for their anticancer activity. These new conjugates exhibit very high DNA binding affinity and cytotoxic activity against a number of cell lines. ...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2008.06.034
更新日期:2008-08-01 00:00:00
abstract::There is still a need for additional scaffolds to further explore tissue selectivity and improving efficacy of selective estrogen receptor modulators (SERMs). A series of hydroxyl substituted diphenylnaphthyl alkene ligands for the two estrogen receptors are described that arose from an initial de novo designed diphen...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2004.11.051
更新日期:2005-03-01 00:00:00
abstract::Tuberculosis is today amongst the worldwide health threats. As resistant strains of Mycobacterium tuberculosis have slowly emerged, treatment failure is too often a fact, especially in countries lacking the necessary health care organisation to provide the long and costly treatment adapted to patients. Because of lack...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章,评审
doi:10.1016/j.bmc.2007.01.030
更新日期:2007-04-01 00:00:00
abstract::Continuing work on the bioactivity-directed fractionation of the bark of Annona squamosa has resulted in the discovery of three new Annonaceous acetogenins, (2,4-cis and trans)-squamolinone (1), (2,4-cis and trans)-9-oxoasimicinone (2), and bullacin B (3). Compounds 1-3 are all adjacent bis-THF ring acetogenins with 2...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/s0968-0896(98)00018-2
更新日期:1998-05-01 00:00:00
abstract::Phenylacetate induced tumor cytostasis and differentiation. The chemotherapeutic function of the compound in lung cancer has been previously reported, however, whether or not phenylacetate performs other activities is not known. In this study, the potential usage of synthetic phenylacetate derivatives, 4-fluoro-N-buty...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2008.11.028
更新日期:2009-01-01 00:00:00
abstract::Serotonin (5-hydroxytryptamine, 5-HT) is an important signaling molecule in the central nervous system (CNS) and in non-neuronal tissues and organs. Serotonin mediates a positive chronotropic and inotropic response through 5-HT4 receptors in the atrium and ventricle of the heart. Recent investigations have revealed in...
journal_title:Bioorganic & medicinal chemistry
pub_type: 杂志文章
doi:10.1016/j.bmc.2013.09.004
更新日期:2013-11-15 00:00:00