Abstract:
:The manuscript reports an identification of a highly potent, orally bioavailable hepatitis C virus entry inhibitor through optimization of a previously reported class of molecules (1) that were not stable in the rat plasma. Compound 39 (ITX 4520) exhibited an excellent PK profile in both rats and dogs with good oral exposure, half-life and oral bioavailability. The compound is also well-tolerated in the preliminary in vivo toxicity studies and has been selected as a pre-clinical candidate for our HCV clinical pipeline.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Mittapalli GK,Zhao F,Jackson A,Gao H,Lee H,Chow S,Kaur MP,Nguyen N,Zamboni R,McKelvy J,Wong-Staal F,Macdonald JEdoi
10.1016/j.bmcl.2012.06.038subject
Has Abstractpub_date
2012-08-01 00:00:00pages
4955-61issue
15eissn
0960-894Xissn
1464-3405pii
S0960-894X(12)00789-5journal_volume
22pub_type
杂志文章abstract::Inhibition of the phosphoinositide 3-kinase (PI3K)/AKT/mammalian target of rapamycin (mTOR) signaling pathway is one of the most intensively studied approaches to cancer therapy. Rational design led to the identification of novel 7-amino-5-methyl-1,6-naphthyridin-2(1H)-one derivatives as potent PI3K/mTOR dual inhibito...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.12.112
更新日期:2014-02-01 00:00:00
abstract::2-Phenyl-4-piperidinyl-6,7-dihydrothieno[3,4-d]pyrimidine derivative (2) was found to be a new PDE4 inhibitor with moderate PDE4B activity (IC50=150 nM). A number of derivatives with a variety of 4-amino substituents and fused bicyclic pyrimidines were synthesized. Among these, 5,5-dioxo-7,8-dihydro-6H-thiopyrano[3,2-...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.03.104
更新日期:2013-06-01 00:00:00
abstract::The synthesis and in vitro chemical and enzymatic stability of L-(+)-3-(3-hydroxy-4-pivaloyloxybenzyl)-2,5-diketomorpholine (9) as L-Dopa prodrug are described. Prodrug 9 possesses a good lipophilicity (log P = 2.153 +/- 0.017), is stable in aqueous buffer solutions (pH 1.3 and 7.4), and in 80% rat and human plasma it...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(00)00249-3
更新日期:2000-06-19 00:00:00
abstract::3-Phenyl-3.4-dihydro-1-isoquinolinamine is a weak inhibitor of iNOS and nNOS. Structural variation of 5a results in inhibitors with a range of potency and selectivity for the NOS enzymes, including a potent and very selective iNOS inhibitor 5j. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(01)00119-6
更新日期:2001-04-23 00:00:00
abstract::The fruits of Cudrania tricuspidata (Carr.) Bur. (Moraceae) significantly inhibited pancreatic lipase, which plays a key role in fat absorption. Optimization of extraction conditions with minimum pancreatic lipase activity and maximum yield was determined using response surface methodology with three-level-three-facto...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2014.03.067
更新日期:2014-05-15 00:00:00
abstract::Subtype specific ligands are needed to evaluate the therapeutic potential of modulating the brain's neuropeptide Y system. The benzothiazepine glycinamide 1a was identified as an NPY5 antagonist lead. While having acceptable solubility, the compound was found to suffer from high clearance and poor exposure. Optimizati...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2011.06.078
更新日期:2011-09-15 00:00:00
abstract::Phenylpiperazine derivatives were synthesized as dual cytokine regulators with TNF-alpha suppressing and IL-10 augmenting activity. Lead optimization led to compound 5k having the potent regulatory activity and demonstrating remarkable protective effects against the lethal challenge of LPS in mice. suggesting that 5k ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(00)00128-1
更新日期:2000-05-01 00:00:00
abstract::A series of borinic acid picolinate esters were synthesized and screened for their minimum inhibitory concentration (MIC) against Gram-positive and -negative bacteria. Our lead compounds were then screened for anti-inflammatory activity. From these studies, we identified 3-hydroxypyridine-2-carbonyloxy-bis(3-chloro-4-...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2006.08.130
更新日期:2006-12-01 00:00:00
abstract::A series of bis(indolyl) hydrazide-hydrazones 5a-n were synthesized and evaluated for their cytotoxicity against selected human cancer cell lines. The reaction of indole-3-carboxaldehyde 2 with indole-3-carbohydrazide 4 in presence of catalytic amount of acetic acid afforded 5a-n in good yields. Among the synthesized ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2011.11.031
更新日期:2012-01-01 00:00:00
abstract::Peroxisome proliferator-activated receptors (PPARs) are attractive targets for the treatment of the metabolic syndrome. Especially a combination of PPARα and PPARγ agonistic activity seems worthwhile to be pursued. Herein we present the design and synthesis of a series of pirinixic acid derivatives as potent PPARα par...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2014.05.058
更新日期:2014-08-15 00:00:00
abstract::A catalyst-free synthesis of 6,9-dihydro-[1,3]dioxolo[4,5-g]thieno[3,4-b]quinolin-8(5H)-ones as novel analogues of podophyllotoxins was developed by a three-component reaction of aldehydes, ethyl 2,4-dioxotetrahydrothiophene-3-carboxylate and 3,4-(methylenedioxy)aniline. This methodology not only provides new chemical...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2015.02.047
更新日期:2015-04-01 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::There is tremendous interest in developing activator artificial transcription factors that functionally mimic endogenous transcriptional activators for use as mechanistic probes, as components of synthetic cell circuitry, and in transcription-targeted therapies. Here, we demonstrate that a phage display selection agai...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.05.045
更新日期:2009-07-15 00:00:00
abstract::Two new C(29) sterols with a cyclopropane ring at C-25 and C-26, petrosterol-3,6-dione (1) and 5alpha,6alpha-epoxy-petrosterol (2), along with petrosterol (3), were isolated from the Vietnamese marine sponge Ianthella sp. The structures of the new compounds were elucidated by comprehensive spectroscopic analyses. Comp...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.06.097
更新日期:2009-08-15 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::Two series (4 and 5) of diarylpyridine derivatives were designed, synthesized, and evaluated for anti-HIV-1 activity. The most promising compound, 5e, inhibited HIV-1 IIIB, NL4-3, and RTMDR1 with low nanomolar EC50 values and selectivity indexes of >10,000. The results of this study indicate that diarylpyridine can be...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.07.080
更新日期:2009-09-15 00:00:00
abstract::Reaction of 7-amino-9-ethylguaninium chloride with lead(IV) acetate (LTA) in MeOH yielded 8-aza-9-ethylguanine. Similarly, the reaction of 1-amino-3-methylbenzimidazolium chloride or its substituted derivatives (6-methyl, 5,6-dimethyl and 5-nitro) with LTA gave the corresponding 1-methyl-1H-benzotriazole (or 1-methyl-...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(99)00123-7
更新日期:1999-04-05 00:00:00
abstract::We report a rapid method for profiling of kinases using a strategy that couples the merits of combinatorics (in rapid diversity generation) with the throughput attainable using microarrays (in parallel screening). Alanine-scanning, deletion and positional-scanning peptide libraries of a kinase substrate were synthesiz...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(03)00633-4
更新日期:2003-09-15 00:00:00
abstract::PNU-159682 is a highly potent secondary metabolite of nemorubicin belonging to the anthracycline class of natural products. Due to its extremely high potency and only partially understood mechanism of action, it was deemed an interesting starting point for the development of a new suite of linker drugs for antibody dr...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2020.127640
更新日期:2020-12-15 00:00:00
abstract::2('),3(')-Didehydro-2('),3(')-dideoxynucleosides are clinically relevant antiviral agents. These nucleosides could be degraded under acidic conditions. Acidic stability studies showed the D4N had the following increasing stability order: D4G journal_title:Bioorganic & medicinal chemistry letters pub_type: 杂志文章 doi:10.1016/j.bmcl.2004.02.031 更新日期:2004-05-03 00:00:00
abstract::A series of potent ALK5 inhibitors were designed using a SBDD approach and subsequently optimized to improve drug likeness. Starting with a 4-substituted quinoline screening hit, SAR was conducted using a ALK5 binding model to understand the binding site and optimize activity. The resulting inhibitors displayed excell...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2017.03.026
更新日期:2017-05-01 00:00:00
abstract::Two new γ-lactones, aspergilactones A (1) and B (2), were discovered along with two known compounds, annularin A (3) and pericoterpenoid A (4), from a culture of the sponge-associated fungus Aspergillus sp. LS45. The planar structures of 1-4 were characterized using comprehensive spectroscopic methods and comparison w...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2019.04.051
更新日期:2019-07-01 00:00:00
abstract::The underlying mechanisms of urocanic acid (UA) to induce immune suppression remain elusive until the recent finding that cis-UA acts via the serotonin, 5-hydroxytryptamine (5-HT) receptor subtype 5-HT(2A). In the present study, the interactions of cis-UA to 5-HT(2A) receptor were explored and compared with those of 5...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.07.143
更新日期:2009-09-15 00:00:00
abstract::Three groups of non-camptothecin compounds with four to five fused rings have been designed and synthesized. Their in vitro anti-proliferative activity has been evaluated with five different cancer cell lines (HCT116, PC3, U87MG, HepG2, SK-OV-3). Compounds B-2 and B-3 showed the most potent cell growth inhibition with...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2015.06.042
更新日期:2015-10-15 00:00:00
abstract::We designed and synthesized of 1,3,5-trioxazatriquinanes with o- or p-hydroxyphenyl rings as analogs of the κ opioid receptor agonist SYK-146 with m-hydroxyphenyl groups. Although almost all tested compounds did not bind to the opioid receptors, only 17b (SYK-524) with two o-hydroxyphenyl rings showed moderate or pote...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2014.08.012
更新日期:2014-10-15 00:00:00
abstract::Cannabinoid CB2 PET tracers are considered as a promising alternative to PBR/TSPO tracers for the in-vivo imaging of neuroinflammation. We describe here the synthesis and characterization of compound 3, a new potent and brain penetrating CB2 ligand based on an original triazine template. The PET tracer [(18)F]-dideute...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.11.023
更新日期:2014-01-01 00:00:00
abstract::The bacterial protein tyrosine phosphatase YopH is an essential virulence determinant in Yersinia pestis and a potential antibacterial drug target. Here we report our studies of screening for small molecule inhibitors of YopH using both high throughput and in silico approaches. The identified inhibitors represent a di...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2012.12.018
更新日期:2013-02-15 00:00:00
abstract::The X-ray crystal structure for the adduct of human carbonic anhydrase (hCA) II with a topically acting antiglaucoma sulfonamide (the 2-N,N-diethylaminoethylamide of 5-(4-carboxybenzenesulfonamido-1,3,4-thiadiazole-2-sulfonamide), has been resolved at a resolution of 1.6A. This compound is a very potent inhibitor of t...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2004.01.096
更新日期:2004-05-03 00:00:00
abstract::Radioligands are powerful tools for examining the pharmacological profiles of chemical leads and thus facilitate drug discovery. In this study, we identified and characterized 3-([1,1,1-(3)H]methyl)-2-(4-{[3-(1-pyrrolidinyl)propyl]oxy} phenyl)-4(3H)-quinazolinone ([(3)H]1) as a potent and selective radioligand for his...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.06.025
更新日期:2009-08-01 00:00:00
abstract::Several benzofuran derivatives linked to a 3-indoletetrahydropyridine through an alkyl chain were prepared and evaluated for serotonin transporter and 5-HT(1A) receptor affinities. Their design, synthesis and structure-activity relationships are described. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.12.093
更新日期:2010-02-01 00:00:00