Abstract:
:Bioassay-guided fractionation of an active fraction from an extract of a marine starfish, Novodinia antillensis, led to the isolation and identification of two new saponins, Sch 725737 (1) and Sch 725739 (2). Compound 1 was identified as the NaV1.8 inhibitor with IC(50) of approximately 9 microM. The purification and the structure elucidation of these two saponins are described.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Yang SW,Chan TM,Buevich A,Priestley T,Crona J,Reed J,Wright AE,Patel M,Gullo V,Chen G,Pramanik B,Chu Mdoi
10.1016/j.bmcl.2007.08.025subject
Has Abstractpub_date
2007-10-15 00:00:00pages
5543-7issue
20eissn
0960-894Xissn
1464-3405pii
S0960-894X(07)00974-2journal_volume
17pub_type
杂志文章abstract::Novel L- and D-configuration dioxolane 5-azacytosine and 6-azathymine nucleosides have been synthesized and evaluated for biological activity. (-)-(2S,4S)-1-[2-(Hydroxymethyl)-1,3-dioxolan-4-yl]-5-azacytosine (6) showed significant activity against HBV, whereas the D-configuration analogue (14) has been found to exhib...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(00)00418-2
更新日期:2000-09-18 00:00:00
abstract::Strigolactones (SLs) are new plant hormones with varies important bio-functions. This Letter deals with germination of seeds of parasitic weeds. Natural SLs have a too complex structure for synthesis. Therefore, there is an active search for SL analogues and mimics with a simpler structure with retention of activity. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.07.004
更新日期:2013-09-15 00:00:00
abstract::Retinoid X receptor (RXR) and Histone deacetylase (HDAC) are considered important targets for anti-cancer therapy due to their crucial roles in genetic or epigenetic regulations of cancer development and progression. Here, we have designed and synthesized a novel compound which targets both RXR and HADC. This dual-tar...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.04.067
更新日期:2013-07-01 00:00:00
abstract::We have demonstrated that the p-trifluoromethylphenylpropionylamino residue at the 2-position of the core structure leads to an active benzophenone-type anti-malarial agent. The attempt to improve water solubility by introduction of an amino group into the alpha-position of the arylpropionyl residue resulted in decrea...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(03)00179-3
更新日期:2003-05-05 00:00:00
abstract::We found that untenone A and mannzamenone A inhibit mammalian DNA polymerases alpha and beta, and human terminal deoxynucleotidyl transferase (TdT). The syntheses of both compounds and the structure-activity relationships of untenone A derivatives are described. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2004.01.092
更新日期:2004-04-19 00:00:00
abstract::A series of isoquinuclidine benzamides as glycine uptake inhibitors for the treatment of schizophrenia are described. Potency, lipophilicity, and intrinsic human microsomal clearance were parameters for optimization. Potency correlated with the nature of the ortho substituents of the benzamide ring, and reductions in ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2018.02.029
更新日期:2018-04-01 00:00:00
abstract::The stereospecific synthesis of two all-syn-EPA-derived isoprostanes (iPs), 5-epi-8,12-iso-iPF(3alpha)-VI 17 and 8,12-iso-iPF(3alpha)-VI 18, has been accomplished. These two synthetic probes have been used to discover and identify their presence in human urine. The eventual quantitative measurement of these two iPs ma...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2008.09.008
更新日期:2008-10-15 00:00:00
abstract::A new class of benzimidazole-5-sulfonamides has been identified as nonpeptide luteinizing hormone-releasing hormone (LHRH) antagonists. Initial structure-activity relationships are presented resulting in compounds 19 and 28 with submicromolar dual functional activity on human and rat receptors. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2004.10.089
更新日期:2005-02-01 00:00:00
abstract::The synthesis of 2'-O,4'-C-methylene-bridged bicyclic guanine ribonucleosides bearing 2'-C-methyl or 5'-C-methyl modifications is described. Key to the successful installation of the methyl functionality in both cases was the use of a one-pot oxidation-Grignard procedure to avoid formation of the respective unreactive...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2014.04.050
更新日期:2014-06-15 00:00:00
abstract::Several benzocyclobutacarbazol derivatives were synthesized and evaluated for their potential cytotoxic properties. A number of these compounds exhibited significant antiproliferative activity with concomitant interaction with the cell cycle and represent a new class of potential anticancer agents. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(00)00532-1
更新日期:2000-12-04 00:00:00
abstract::A series of (E)-N-Aryl-2-oxo-2-(3,4,5-trimethoxyphenyl)acetohydrazonoyl cyanides have been synthesized and evaluated for their anticancer activity in human hepatocellular liver carcinoma HepG2 and breast adenocarcinoma MCF-7 cell lines. Among all the tested compounds, compound 3a, 3e and 3n displayed more activity tha...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2018.09.004
更新日期:2018-11-01 00:00:00
abstract::[(18)F]-labeled molecular probe for the detection of myocardial perfusion deficit is driving particular interest due to its high clinical applicability. Thus, we synthesized (2-(2-[(18)F]fluoroethoxy)ethyl)triphenylphosphonium salt ([(18)F]3) that specifically accumulates in myocardium according to mitochondrial membr...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2011.11.005
更新日期:2012-01-01 00:00:00
abstract::Five new phenoxazine-based alkaloids venezuelines A-E (1-5) and two new aminophenols venezuelines F-G (6-7), as well as three known analogues exfoliazone, chandrananimycin D and carboxyexfoliazone were isolated from the fermentation broth of the marine-derived bacterium Streptomyces venezuelae. The structures of new c...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2012.10.096
更新日期:2013-01-01 00:00:00
abstract::Crystallography has identified stearic acid, ALRT 1550 and ATRA as ligands that bind RORβ, however, none of these molecules represent good starting points to develop optimized small molecule modulators. Recently, Compound 1 was identified as a potent dual RORβ and RORγ inverse agonist with no activity towards RORα (Fi...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2018.03.001
更新日期:2018-04-15 00:00:00
abstract::The objective of this report is to introduce the novel concept of utilizing sulfenamides as prodrugs for compounds containing an NH-acidic functionality, particularly weakly acidic amide-type functionalities (amides, ureas, carbamates, etc.). Included are the syntheses and physicochemical characterizations of some mod...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2007.06.037
更新日期:2007-09-01 00:00:00
abstract::Type-2 diabetes (T2D) is a complex metabolic disease characterized by insulin resistance in the liver and peripheral tissues accompanied by a defect in pancreatic beta-cell. Since their discovery three subtypes of Peroxisomes Proliferators Activated Receptors were identified namely PPARalpha, PPARgamma and PPARbeta/(d...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2008.01.067
更新日期:2008-03-01 00:00:00
abstract::RNA regulation and maintenance are critical for proper cell function. Small molecules that specifically alter RNA sequence would be exceptionally useful as probes of RNA structure and function or as potential therapeutics. Here, we demonstrate a photochemical approach for altering the trinucleotide expanded repeat cau...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2017.10.034
更新日期:2018-09-01 00:00:00
abstract::Novel conformationally-restricted mTOR kinase inhibitors with cyclic sulfone scaffold were designed. Synthesis and structure-activity relationship (SAR) studies are described with emphasis on optimization of the mTOR potency and selectivity against class I PI3Kα kinase. PF-05139962 was identified with excellent mTOR b...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2012.05.104
更新日期:2012-08-01 00:00:00
abstract::The concurrent implementation of a proteome-wide serine hydrolase selectivity screen with traditional efforts to optimize fatty acid amide hydrolase (FAAH) inhibition potency led to the expedited discovery of a new class of exceptionally potent (Ki < 300 pM) and unusually selective (> 100-fold selective) inhibitors. T...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2004.12.085
更新日期:2005-03-01 00:00:00
abstract::Current Letter presents design, synthesis and biological evaluation of a novel series of pyrazolylthiazole carboxylates 1a-1p and corresponding acid derivatives 2a-2p. All 32 novel compounds were tested for their in vivo anti-inflammatory activity by carrageenan-induced rat paw edema method as well as for in vitro ant...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2015.02.004
更新日期:2015-03-15 00:00:00
abstract::A series of 1-indazol-3-(1-phenylpyrazol-5-yl)methyl ureas were investigated as hTRPV1 antagonists. The structure-activity relationship study was conducted systematically for both the indazole A-region and the 3-trifluoromethyl/t-butyl pyrazole C-region to optimize the antagonism toward the activation by capsaicin. Am...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2020.127548
更新日期:2020-12-01 00:00:00
abstract::We report examples of a series of novel pyrrolo[2,1-c][1,4]benzodiazepine (PBD) analogues 12-15 prepared from a common functionalized building block 11 that can be conveniently synthesized on a large scale and in optically pure form. Isoindoline analogue 15 is the most cytotoxic agent in this series, has the highest D...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2003.12.017
更新日期:2004-02-23 00:00:00
abstract::Regiospecific synthesis of 2,3-disubstituted-L-histidines and 2,3-disubstituted histamines starting from L-histidine methyl ester and histamine is reported. The key step involves homolytic free radical alkylation via silver catalyzed oxidative decarboxylation of alkylcarboxylic acids with ammonium persulfate. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(01)00154-8
更新日期:2001-05-07 00:00:00
abstract::A cyclic imine conjugated to a fluorescent dansyl group was synthesized and used for covalent labeling of proteins. The covalent attachment to proteins was confirmed by gel electrophoresis and mass analysis. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2008.12.071
更新日期:2009-02-15 00:00:00
abstract::Cdc7 kinase is responsible for the initiation and regulation of DNA replication and has been proposed as a target for cancer therapy. We have identified a class of Cdc7 inhibitors based on a substituted indole core. Synthesis of focused indole and azaindole analogs yielded potent and selective 5-azaindole Cdc7 inhibit...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.02.007
更新日期:2013-04-01 00:00:00
abstract::A series of N-(1-methyl-1H-indol-3-yl)methyleneamines and eight new 3,3-diaryl-4-(1-methyl-1H-indol-3-yl)azetidin-2-ones have been synthesized and screened for their antileishmanial activity against Leishmania major. 3,3-Diaryl-4-(1-methyl-1H-indol-3-yl)azetidin-2-ones have been synthesized by the Staudinger's ketene-...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2012.06.081
更新日期:2012-09-01 00:00:00
abstract::Human serum albumin (HSA) was shown to mediate oligoribonucleotide cleavage. Nonenzymatic glycation of HSA decreased the ribonuclease-like activity of the protein. According to (31)P NMR data, both native and glycated albumins induced hydrolysis of RNA molecule through 2',3'-cyclophosphate intermediates. A feasible me...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2008.07.060
更新日期:2008-08-15 00:00:00
abstract::Two (99m)Tc/Re complexes based on flavone and aurone were tested as potential probes for imaging β-amyloid plaques using single photon emission computed tomography. Both (99m)Tc-labeled derivatives showed higher affinity for Aβ(1-42) aggregates than did (99m)Tc-BAT. In sections of brain tissue from an animal model of ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2010.08.004
更新日期:2010-10-01 00:00:00
abstract::A series of phenoxy benzoxaboroles were synthesized and screened for their inhibitory activity against PDE4 and cytokine release. 5-(4-Cyanophenoxy)-2,3-dihydro-1-hydroxy-2,1-benzoxaborole (AN2728) showed potent activity both in vitro and in vivo. This compound is now in clinical development for the topical treatment ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.03.007
更新日期:2009-04-15 00:00:00
abstract::Novel 6,8-difluoro-1-alkyl-5-amino-1,4-dihydro-4-oxo-7-{4-substituted piperazin-1-yl}-quinoline-3-carboxylic acids, with the substituents at 4th position of piperazine being -[2(pyridine-4-carbonyl) hydrazono]propyl and -2 [(pyrazine-2-carbonyl) amino] ethyl, were synthesized and evaluated in vivo against Mycobacteriu...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2005.02.037
更新日期:2005-04-01 00:00:00