Abstract:
:A series of tripeptidic acylsulfonamide inhibitors of HCV NS3 protease were prepared that explored structure-activity relationships (SARs) at the P4 position, and their in vitro and in vivo properties were evaluated. Enhanced potency was observed in a series of P4 ureas; however, the PK profiles of these analogues were less than optimal. In an effort to overcome the PK shortcomings, modifications to the P3-P4 junction were made. This included a strategy in which one of the two urea N-H groups was either N-methylated or replaced with an oxygen atom. The former approach provided a series of regioisomeric N-methylated ureas while the latter gave rise to P4 reverse carbamates, both of which retained potent NS3 inhibitory properties while relying upon an alternative H-bond donor topology. Details of the SARs and PK profiles of these analogues are provided.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Venables BL,Sin N,Wang AX,Sun LQ,Tu Y,Hernandez D,Sheaffer A,Lee M,Dunaj C,Zhai G,Barry D,Friborg J,Yu F,Knipe J,Sandquist J,Falk P,Parker D,Good AC,Rajamani R,McPhee F,Meanwell NA,Scola PMdoi
10.1016/j.bmcl.2018.04.009subject
Has Abstractpub_date
2018-06-01 00:00:00pages
1853-1859issue
10eissn
0960-894Xissn
1464-3405pii
S0960-894X(18)30307-Xjournal_volume
28pub_type
杂志文章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::As a continuation of our efforts to discover and develop the apoptosis inducing 4-aryl-4H-chromenes as novel anticancer agents, we explored the SAR of 4-aryl-4H-chromenes with modifications at the 7- and 5-, 6-, 8-positions. It was found that a small hydrophobic group, such as NMe2, NH2, NHEt, and OMe, is preferred at...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2005.07.066
更新日期:2005-11-01 00:00:00
abstract::Electron rich 6-[(dimethylamino)methylene]amino uracil 1, undergoes [4+2] cycloaddition reactions with various in situ generated glyoxylate imine and imine oxides 6 to provide novel pyrimido[4,5-d]pyrimidine derivatives of biological significance, after elimination of dimethylamine from the (1:1) cycloadducts and oxid...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2006.03.088
更新日期:2006-07-01 00:00:00
abstract::Millettia pachycarpa Benth, a widely used anthelminthic drug in folk, is rich in flavonoids with various bioactivities. This study aimed to identify active flavonoids with anti-Alzheimer's disease (AD) effect from its seeds by a bioassay-guided isolation. A novel rotenoid with unusual oxidative ring-opening skeleton (...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2019.03.024
更新日期:2019-05-15 00:00:00
abstract::Naturally occurring 8-O-methylated sialic acids, including 8-O-methyl-N-acetylneuraminic acid and 8-O-methyl-N-glycolylneuraminic acid, along with 8-O-methyl-2-keto-3-deoxy-d-glycero-d-galacto-nonulosonic acid (Kdn8Me) and 8-deoxy-Kdn were synthesized from corresponding 5-O-modified six-carbon monosaccharides and pyru...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2011.04.083
更新日期:2011-09-01 00:00:00
abstract::The first non-substrate like inhibitors of human cytosolic phosphoenolpyruvate carboxykinase (PEPCK) competitive with GTP are reported. An effort to discover orally active compounds that improve glucose homeostasis in Type 2 diabetics by reversibly inhibiting PEPCK led to the discovery of 1-allyl-3-butyl-8-methylxanth...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(03)00722-4
更新日期:2003-10-20 00:00:00
abstract::Nrf2 is the major transcription factor that regulates many of the cytoprotective enzymes involved in the adaptive stress response. Modulation of Nrf2 could be therapeutically useful in a number of disease states. Activation can occur through either an electrophilic or non-electrophilic mechanism. To date, most of the ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章,评审
doi:10.1016/j.bmcl.2015.04.019
更新日期:2015-06-01 00:00:00
abstract::The synthesis of [1-[(5-hydroxy-4-(phenylmethyl)-3-oxazolidinyl)carbonyl]-2-ethylpropy lcarbamic acid phenylmethyl ester (2; MDL 104,903), a potent inhibitor of calpain, is described. Synthesis of related compounds, which offer insights into the mechanism of action for 2, are also described, as is an O-acetyl prodrug ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(99)00391-1
更新日期:1999-08-16 00:00:00
abstract::A few naturally occurring prenyl- and prenyloxycoumarins and several new related synthetic derivatives were evaluated as inhibitors of squalene-hopene cyclase (SHC), a useful model enzyme, to predict their interactions with oxidosqualene cyclase (OSC). Umbelliprenin-10',11'-monoepoxide (IC(50) 2.5 microM) and the corr...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2004.01.085
更新日期:2004-04-19 00:00:00
abstract::Inhibitors of CYP1 enzymes may play vital roles in the prevention of cancer and overcoming chemo-resistance to anticancer drugs. In this letter, we report synthesis of twenty-three pyrrole based heterocyclic chalcones which were screened for inhibition of CYP1 isoforms. Compound 3n potently inhibited CYP1B1 with an IC...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2017.07.010
更新日期:2017-08-15 00:00:00
abstract::New hybrid molecules of isothiocyanate and progesterone and their metal complexes were synthesized exhibiting promising anti-proliferative and pro-apoptotic activity against breast and prostate cancer cells. These metal complex compounds exploited an existing cellular transport pathway for delivery of cytotoxic isothi...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.11.128
更新日期:2010-02-01 00:00:00
abstract::A series of alpha-alkyl-alpha-amino-beta-sulphone hydroxamates was prepared and evaluated for potency versus MMP-2 and MMP-13, and for selectivity versus MMP-1. Low nanomolar potency was obtained with selectivity versus MMP-1 ranging from >10 to >1000. Selected compounds were orally bioavailable. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(01)00557-1
更新日期:2001-10-22 00:00:00
abstract::Phosphoglycolo amidoxime and phosphoglycolo hydrazide, two new derivatives of phosphoglycolic acid, were synthesised and successfully tested as selective competitive inhibitors of class II FBP-aldolases. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2004.03.040
更新日期:2004-06-07 00:00:00
abstract::Indoleamine 2,3-dioxygenase 2 (IDO2) is a potential therapeutic target for the treatment of diseases that involve immune escape such as cancer. In contrast to IDO1, only a very limited number of inhibitors have been described for IDO2 due to inherent difficulties in expressing and purifying a functionally active, solu...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2016.07.031
更新日期:2016-09-01 00:00:00
abstract::Novel prostaglandin E2 receptor 4 (EP4) agonists featuring a pyridone core and an allylic alcohol ω-chain were discovered. These agonists were shown to be selective over EP1, EP2 and EP3. Analogs harboring a 4-carboxylic acid phenethyl α-chain displayed improved potency over those containing an n-heptanoic acid chain....
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2020.127104
更新日期:2020-05-15 00:00:00
abstract::A series of orthoalkylaminophenol derivatives was synthesized and tested in vitro with respect to their neuroprotective effect. Some of these compounds exhibited a potent antioxidant activity close to that of standard alpha-tocopherol. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(99)00504-1
更新日期:1999-10-18 00:00:00
abstract::Methanolic extract of Miliusa balansae Finet et Gagnep exerts an anti-inflammatory effect via inhibition of nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated murine RAW 264.7 macrophage cells. Three new megastigmane glycosides, milbasides A-C (1-3), together with fifteen known compounds (4-18), were ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2015.07.056
更新日期:2015-09-15 00:00:00
abstract::A group of sixteen iridoids isolated from plants used as anti-inflammatory remedies in Mexican folk medicine were evaluated for their potential to inhibit cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) enzymes. From these assays, loganic acid (10) was identified as the most promising compound with both COX-1 (3...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2015.08.075
更新日期:2015-10-15 00:00:00
abstract::In order to define the structural requirements of quinazoline-2(1H)-thiones 1 for their inhibitory activity on melanogenesis, a novel series of 3,4-dihydroquinazoline-2(1H)-thiones (3a-h) were prepared and screened for their melanogenesis inhibition on melanoma B16 cell line under the stimulant of alpha-MSH. The anti-...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2010.06.123
更新日期:2010-08-15 00:00:00
abstract::A potential anti-HIV and HCV drug candidate is highly desirable as coinfection has become a worldwide public health challenge. A potent compound based on a tetrabutoxy-calix[4]arene scaffold that possesses dual inhibition for both HIV and HCV is described. Structural activity relationship studies demonstrate the effec...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2010.02.043
更新日期:2010-04-01 00:00:00
abstract::A series of 2-amino-S-aryl cysteine S,S-dioxides have been synthesised and shown to inhibit kynureninase an important enzyme in the biosynthesis of the known excitotoxic moiety quinolinic acid. The most potent of these, 2-amino-5-methyl-S-phenyl cysteine S,S-dioxide 6d, inhibits interferon-gamma induced synthesis of q...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(97)10209-8
更新日期:1998-01-20 00:00:00
abstract::An oxovanadium complex of quercetin (2), exhibits highly potent insulin-enhancing activity in streptozotocin-induced diabetic mice. It also mimics mitogenic potential of insulin as evaluated by [H(3)]thymidine uptake assay making an effective, orally active insulin-enhancing agent for the treatment of both type 1 and ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2004.07.020
更新日期:2004-10-04 00:00:00
abstract::A series of potent dual JAK1/3 inhibitors have been developed from a moderately selective JAK3 inhibitor. Substitution at the C6 position of the pyrrolopyridazine core with aryl groups provided exceptional biochemical potency against JAK1 and JAK3 while maintaining good selectivity against JAK2 and Tyk2. Translation t...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2017.05.043
更新日期:2017-07-15 00:00:00
abstract::The discovery and optimization of a novel series of prolinol-derived GHSR agonists is described. This series emerged from a 11,520-member solid-phase library targeting the GPCR protein superfamily, and the rapid optimization of low micromolar hits into single-digit nanomolar leads can be attributed to the solid-phase ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2008.07.120
更新日期:2008-09-15 00:00:00
abstract::The discovery and SAR of a series of potent renin inhibitors possessing a novel biaryl scaffold are described herein. Molecular modeling revealed that the cyclopropylamide spacer present in 1 can be replaced by a simple, substituted aromatic ring such as a toluene in 2. The resulting compounds exhibit subnanomolar ren...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2010.07.127
更新日期:2010-10-01 00:00:00
abstract::The Naturally occurring novel cyclohexanonyl bromophenol 2(R)-2-(2,3,6-tribromo-4,5-dihydroxybenzyl)cyclohexanone (4) was synthesized as a racemic compound. Cyclohexylphenyl methane derivatives (10-17) with Br, OMe, CO, and OH were also obtained. Inhibition of four human carbonic anhydrase (hCA, EC 4.2.1.1) isozymes I...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2011.12.069
更新日期:2012-02-01 00:00:00
abstract::The first examples of thioether-substituted benzonitriles as potential soft-drug androgen receptor antagonists are reported. A number of 4-(alkylthio)- and of 4-(arylthio)-benzonitrile analogs were evaluated in human androgen receptor binding and cellular functional assays. Analogs with potent in vitro binding and cel...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.01.063
更新日期:2009-03-01 00:00:00
abstract::A series of cyclopropyl hydroxamic acids were prepared. Many of the compounds displayed picomolar affinity for the TACE enzyme while maintaining good to excellent selectivity profiles versus MMP-1, -2, -3, -7, -14, and ADAM-10. X-ray analysis of an inhibitor in the TACE active site indicated that the molecules bound t...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2008.09.045
更新日期:2008-11-01 00:00:00
abstract::A new pyrrolyl 4-quinolinone alkaloid with an unprecedented ring system, named penicinoline (1) was isolated from a mangrove endophytic fungus. The structure of 1 was elucidated by spectroscopic methods and comparison with its derivative, penicinotam (1a), an unexpected lactam that was obtained from 1 by intramolecula...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2010.04.043
更新日期:2010-06-01 00:00:00
abstract::A benzopyranopyridine inhibitor of mitogen-activated protein kinase-activated protein kinase 2 (MK2) is prepared rapidly and efficiently in one step using microwave dielectric heating, whereas a substrate-selective p38 MAPK inhibitor was prepared using conventional heating techniques. The former had MK2 inhibitory act...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2007.10.036
更新日期:2007-12-15 00:00:00