Synthesis and Antitumor Activity of C-7-Alkynylated and Arylated Pyrrolotriazine C-Ribonucleosides.

abstract：:Herein we describe the design and synthesis of a series of pyridopyrazine-1,6-dione γ-secretase modulators (GSMs) for Alzheimer's disease (AD) that achieve good alignment of potency, metabolic stability, and low MDR efflux ratios, while also maintaining favorable physicochemical properties. Specifically, incorporation...

journal_title：ACS medicinal chemistry letters

authors： Pettersson M,Johnson DS,Humphrey JM,Butler TW,Am Ende CW,Fish BA,Green ME,Kauffman GW,Mullins PB,O'Donnell CJ,Stepan AF,Stiff CM,Subramanyam C,Tran TP,Vetelino BC,Yang E,Xie L,Bales KR,Pustilnik LR,Steyn SJ,Wood K

更新日期：2015-04-03 00:00:00

abstract：:The BRPF (bromodomain and PHD finger-containing) protein family are important scaffolding proteins for assembly of MYST histone acetyltransferase complexes. Here, we report the discovery, binding mode, and structure-activity relationship (SAR) of the first potent, selective series of inhibitors of the BRPF1 bromodomai...

journal_title：ACS medicinal chemistry letters

authors： Demont EH,Bamborough P,Chung CW,Craggs PD,Fallon D,Gordon LJ,Grandi P,Hobbs CI,Hussain J,Jones EJ,Le Gall A,Michon AM,Mitchell DJ,Prinjha RK,Roberts AD,Sheppard RJ,Watson RJ

更新日期：2014-09-10 00:00:00

abstract：:A series of N-(3-ethynyl-2,4-difluorophenyl)sulfonamides were identified as new selective Raf inhibitors. The compounds potently inhibit B-Raf(V600E) with low nanomolar IC50 values and exhibit excellent target specificity in a selectivity profiling investigation against 468 kinases. They strongly suppress proliferatio...

journal_title：ACS medicinal chemistry letters

authors： Li Y,Cheng H,Zhang Z,Zhuang X,Luo J,Long H,Zhou Y,Xu Y,Taghipouran R,Li D,Patterson A,Smaill J,Tu Z,Wu D,Ren X,Ding K

更新日期：2015-03-18 00:00:00

abstract：:An active site mapping of human cathepsin B with dipeptide nitrile inhibitors was performed for a combinatorial approach by introducing several points of diversity and stepwise optimizing the inhibitor structure. To address the occluding loop of cathepsin B by a carboxylate moiety, click chemistry to generate linker-c...

journal_title：ACS medicinal chemistry letters

authors： Schmitz J,Li T,Bartz U,Gütschow M

更新日期：2015-12-28 00:00:00

abstract：:The multistep preparation of (11)C-levetiracetam ((11)C-LEV) was carried out by a one-pot radiosynthesis with 8.3 ± 1.6% (n = 8) radiochemical yield in 50 ± 5.0 min. Briefly, the propionaldehyde was converted to propan-1-imine in situ as labeling precursor by incubation with ammonia. Without further separation, the im...

journal_title：ACS medicinal chemistry letters

authors： Cai H,Mangner TJ,Muzik O,Wang MW,Chugani DC,Chugani HT

更新日期：2014-08-19 00:00:00

abstract：:Novel sources of antibiotics are required to keep pace with the inevitable onset of bacterial resistance. Continuing with our macrolide desmethylation strategy as a source of new antibiotics, we report the total synthesis, molecular modeling and biological evaluation of 4,10-didesmethyl telithromycin (4), a novel desm...

journal_title：ACS medicinal chemistry letters

authors： Velvadapu V,Glassford I,Lee M,Paul T,Debrosse C,Klepacki D,Small MC,Mackerell AD Jr,Andrade RB

更新日期：2012-03-08 00:00:00

abstract：:Inhibitors of the protein methyltransferase Enhancer of Zeste Homolog 2 (EZH2) may have significant therapeutic potential for the treatment of B cell lymphomas and other cancer indications. The ability of the scientific community to explore fully the spectrum of EZH2-associated pathobiology has been hampered by the la...

journal_title：ACS medicinal chemistry letters

authors： Campbell JE,Kuntz KW,Knutson SK,Warholic NM,Keilhack H,Wigle TJ,Raimondi A,Klaus CR,Rioux N,Yokoi A,Kawano S,Minoshima Y,Choi HW,Porter Scott M,Waters NJ,Smith JJ,Chesworth R,Moyer MP,Copeland RA

更新日期：2015-03-04 00:00:00

abstract：:Antibiotic-resistant bacteria are emerging at an alarming rate in both hospital and community settings. Motivated by this issue, we have prepared desmethyl (i.e., replacing methyl groups with hydrogens) analogues of third-generation macrolide drugs telithromycin (TEL, 2) and cethromycin (CET, 6), both of which are sem...

journal_title：ACS medicinal chemistry letters

authors： Wagh B,Paul T,Debrosse C,Klepacki D,Small MC,Mackerell AD Jr,Andrade RB

更新日期：2013-11-14 00:00:00

abstract：:Structure-activity relationship translation offers an expeditious means for discovery of new active series. This approach was applied to discover tetrahydroisoquinoline (THIQ)-based steroidomimetic microtubule disruptors. The two A-ring elements of a three-point steroidal pharmacophore were incorporated into a THIQ-ba...

journal_title：ACS medicinal chemistry letters

authors： Leese MP,Jourdan F,Dohle W,Kimberley MR,Thomas MP,Bai R,Hamel E,Ferrandis E,Potter BV

更新日期：2012-01-12 00:00:00

abstract：:The 5-HT(2C) receptor is an attractive drug target in the quest for new therapeutics to treat a variety of human disorders. We have previously undertaken a structural optimization campaign that has led to some potent and moderately selective 5-HT(2C) receptor agonists. After expanding our structure-function library, w...

journal_title：ACS medicinal chemistry letters

authors： Chen G,Cho SJ,Huang XP,Jensen NH,Svennebring A,Sassano MF,Roth BL,Kozikowski AP

更新日期：2011-12-08 00:00:00

abstract：:[This corrects the article DOI: 10.1021/acsmedchemlett.8b00507.]. ...

journal_title：ACS medicinal chemistry letters

authors： De Simone A,La Pietra V,Betari N,Petragnani N,Conte M,Daniele S,Pietrobono D,Martini C,Petralla S,Casadei R,Davani L,Frabetti F,Russomanno P,Novellino E,Montanari S,Tumiatti V,Ballerini P,Sarno F,Nebbioso A,Altucci

更新日期：2019-08-06 00:00:00

abstract：:Highly toxic bacterial ionophores are commonly used in veterinary medicine, but their therapeutic index is too narrow for human usage. With the goal of developing ionophores with a broader therapeutic index, we constructed highly derivatized synthetic ionophores. The toxicities of crown ether host-rotaxanes (CEHR's) a...

journal_title：ACS medicinal chemistry letters

authors： Smithrud DB,Wang X,Tarapore P,Ho SM

更新日期：2013-01-10 00:00:00

abstract：:CREB (cAMP response element binding protein) has been shown to play an important role in tumor initiation, progression, and metastasis. We discovered that naphthol AS-E, a cell-permeable CREB inhibitor, presented antiproliferative activity in a broad panel of cancer cell lines in vitro. However, it has limited aqueous...

journal_title：ACS medicinal chemistry letters

authors： Li BX,Xie F,Fan Q,Barnhart KM,Moore CE,Rheingold AL,Xiao X

更新日期：2014-08-22 00:00:00

abstract：:Membrane-bound pyrophosphatases (mPPases) regulate energy homeostasis in pathogenic protozoan parasites and lack human homologues, which makes them promising targets in e.g. malaria. Yet only few nonphosphorus inhibitors have been reported so far. Here, we explore an isoxazole fragment hit, leading to the discovery of...

journal_title：ACS medicinal chemistry letters

authors： Johansson NG,Turku A,Vidilaseris K,Dreano L,Khattab A,Ayuso Pérez D,Wilkinson A,Zhang Y,Tamminen M,Grazhdankin E,Kiriazis A,Fishwick CWG,Meri S,Yli-Kauhaluoma J,Goldman A,Boije Af Gennäs G,Xhaard H

更新日期：2020-02-17 00:00:00

abstract：:A series of 12N-substituted sophoridinamine derivatives were synthesized and evaluated for their cytotoxic activities in human HepG2 hepatoma cells. Structure-activity relationship revealed that introduction of a suitable arylidene or arylethyl at the N'-end could greatly enhance antiproliferation potency. Among them,...

journal_title：ACS medicinal chemistry letters

authors： Bi C,Zhang N,Yang P,Ye C,Wang Y,Fan T,Shao R,Deng H,Song D

更新日期：2017-01-05 00:00:00

abstract：:The racemic product of the Betti reaction of 5-chloro-8-hydroxyquinoline, benzaldehyde and 2-aminopyridine was separated by chiral HPLC to determine which enantiomer inhibited botulinum neurotoxin serotype A. When the enantiomers unexpectedly proved to have comparable activity, the absolute structures of (+)-(R)-1 and...

journal_title：ACS medicinal chemistry letters

authors： Cardellina JH 2nd,Vieira RC,Eccard V,Skerry J,Montgomery V,Campbell Y,Roxas-Duncan V,Leister W,Leclair CA,Maloney DJ,Padula D,Pescitelli G,Khavrutskii I,Hu X,Wallqvist A,Smith LA

更新日期：2011-03-10 00:00:00

abstract：:Design and synthesis of prodrugs of promising drug candidates represents a valid strategy to overcome the lack of favorable ADME properties, in particular aqueous solubility and bioavailability. We report herein the successful application of this strategy with two representative pyrazolo[3,4-d]pyrimidine derivatives (...

journal_title：ACS medicinal chemistry letters

authors： Vignaroli G,Zamperini C,Dreassi E,Radi M,Angelucci A,Sanità P,Crespan E,Kissova M,Maga G,Schenone S,Musumeci F,Botta M

更新日期：2013-05-20 00:00:00

abstract：:Translational readthrough-inducing drugs (TRIDs) rescue the functional full-length protein expression in genetic diseases, such as cystic fibrosis, caused by premature termination codons (PTCs). Small molecules have been developed as TRIDs to trick the ribosomal machinery during recognition of the PTC. Herein we repor...

journal_title：ACS medicinal chemistry letters

authors： Tutone M,Pibiri I,Perriera R,Campofelice A,Culletta G,Melfi R,Pace A,Almerico AM,Lentini L

更新日期：2020-02-18 00:00:00

abstract：:Selective activation of the M1 muscarinic receptor via positive allosteric modulation represents an approach to treat the cognitive decline in patients with Alzheimer's disease. A series of amides were examined as a replacement for the carboxylic acid moiety in a class of quinolizidinone carboxylic acid M1 muscarinic ...

journal_title：ACS medicinal chemistry letters

authors： Kuduk SD,Chang RK,Greshock TJ,Ray WJ,Ma L,Wittmann M,Seager MA,Koeplinger KA,Thompson CD,Hartman GD,Bilodeau MT

更新日期：2012-10-13 00:00:00

abstract：:Substitution of rigidified A3 adenosine receptor (AR) agonists with a 2-((5-chlorothiophen-2-yl)ethynyl) or a 2-(4-(5-chlorothiophen-2-yl)-1H-1,2,3-triazol-1-yl) group provides prolonged protection in a model of chronic neuropathic pain. These agonists contain a bicyclo[3.1.0]hexane ((N)-methanocarba) ring system in p...

journal_title：ACS medicinal chemistry letters

authors： Tosh DK,Crane S,Chen Z,Paoletta S,Gao ZG,Gizewski E,Auchampach JA,Salvemini D,Jacobson KA

更新日期：2015-05-20 00:00:00

abstract：:A series of novel N-acyclic uracil analogs with linear, branched, aromatic, and cyclopropyl-alkynyl as well as heteroaryl moieties at C-5 were prepared using palladium catalyzed Sonogashira and Stille cross-coupling and evaluated against malignant tumor cell lines. C-5-Furan-2-yl uracil derivative 6 was shown to be mo...

journal_title：ACS medicinal chemistry letters

authors： Meščić A,Harej A,Klobučar M,Glavač D,Cetina M,Pavelić SK,Raić-Malić S

更新日期：2015-10-05 00:00:00

abstract：:A series of fluorine-substituted monomeric and dimeric cRGD peptide derivatives, such as cRGD-ADIBOT-F (ADIBOT = azadibenzocyclooctatriazole), di-cRGD-ADIBOT-F, cRGD-PEG5-ADIBOT-F, and di-cRGD-PEG5-ADIBOT-F, were prepared by strain-promoted alkyne azide cycloaddition (SPAAC) reaction of the corresponding aza-dibenzocy...

journal_title：ACS medicinal chemistry letters

authors： Kim HL,Sachin K,Jeong HJ,Choi W,Lee HS,Kim DW

更新日期：2015-02-06 00:00:00

abstract：:Acetaminophen (ApAP) is an electron donor capable of reducing radicals generated by redox cycling of hemeproteins. It acts on the prostaglandin H synthases (cyclooxygenases; COXs) to reduce the protoporphyrin radical cation in the peroxidase site of the enzyme, thus preventing the intra-molecular electron transfer tha...

journal_title：ACS medicinal chemistry letters

authors： Shchepin RV,Liu W,Yin H,Zagol-Ikapitte I,Amin T,Jeong BS,Roberts LJ 2nd,Oates JA,Porter NA,Boutaud O

更新日期：2013-08-08 00:00:00

abstract：:Bacterial RNA polymerase (RNAP) is essential for transcription and is an antibacterial target for small molecule inhibitors. The binding region of myxopyronin B (MyxB), a bacterial RNAP inhibitor, offers the possibility of new inhibitor design. The molecular design program SPROUT has been used in conjunction with the ...

journal_title：ACS medicinal chemistry letters

authors： McPhillie MJ,Trowbridge R,Mariner KR,O'Neill AJ,Johnson AP,Chopra I,Fishwick CW

更新日期：2011-07-29 00:00:00

abstract：:Reactive oxygen species, contributing to oxidant-antioxidant imbalance, initiate damage to the airways cells, inflammatory processes, and further pathophysiological effects. Enhancing antioxidant properties is the main prophylactic and therapeutic challenge. In this work, a newly synthesized and biocompatible structur...

journal_title：ACS medicinal chemistry letters

authors： Wiśniewski M,Bieniek A,Roszek K,Czarnecka J,Bolibok P,Ferrer P,da Silva I,Terzyk AP

更新日期：2018-11-19 00:00:00

abstract：:Current treatment of toxoplasmosis targets the parasite's folate metabolism through inhibition of dihydrofolate reductase (DHFR). The most widely used DHFR antagonist, pyrimethamine, was introduced over 60 years ago and is associated with toxicity that can be largely attributed to a similar affinity for parasite and h...

journal_title：ACS medicinal chemistry letters

authors： Welsch ME,Zhou J,Gao Y,Yan Y,Porter G,Agnihotri G,Li Y,Lu H,Chen Z,Thomas SB

更新日期：2016-09-17 00:00:00

abstract：:Pyxinol, the main metabolite of 20S-protopanaxadiol in human liver, was chosen as a novel skeleton for the development of anti-inflammatory agents. Pyxinol derivatives modified at C-3, C-12, or C-25 and selected stereoisomers were designed, prepared, and investigated for in vitro anti-inflammatory activities. Structur...

journal_title：ACS medicinal chemistry letters

authors： Sun Y,Fang X,Gao M,Wang C,Gao H,Bi W,Tang H,Cui Y,Zhang L,Fan H,Yu H,Yang G

更新日期：2020-02-12 00:00:00

abstract：:A new category of cationic meso-thiophenium porphyrins are introduced as possible alternatives to the popular meso-pyridinium porphyrins. Combinations of cationic porphyrins bearing meso-2-methylthiophenium and meso-4-hydroxyphenyl moieties T2(OH)2M (A2B2 type) and T(OH)3M (AB3 type) along with their zinc(II) complexe...

journal_title：ACS medicinal chemistry letters

authors： Mazumdar ZH,Sharma D,Mukherjee A,Basu S,Shukla PK,Jha T,Sengupta D

更新日期：2020-09-10 00:00:00

abstract：:Small molecule inhibitors of the HIV-1 nucleocapsid protein (NC) are considered as promising agents in the treatment of HIV/AIDS. In an effort to exploit the privileged 2-amino-4-phenylthiazole moiety in NC inhibition, here we conceived, synthesized, and tested in vitro 18 NC inhibitors (NCIs) bearing a double functio...

journal_title：ACS medicinal chemistry letters

authors： Mori M,Dasso Lang MC,Saladini F,Palombi N,Kovalenko L,De Forni D,Poddesu B,Friggeri L,Giannini A,Malancona S,Summa V,Zazzi M,Mely Y,Botta M

更新日期：2018-12-07 00:00:00

abstract：:Novel sources of antibiotics are needed to address the serious threat of bacterial resistance. Accordingly, we have launched a structure-based drug design program featuring a desmethylation strategy wherein methyl groups have been replaced with hydrogens. Herein we report the total synthesis, molecular modeling, and b...

journal_title：ACS medicinal chemistry letters

authors： Glassford I,Lee M,Wagh B,Velvadapu V,Paul T,Sandelin G,DeBrosse C,Klepacki D,Small MC,MacKerell AD Jr,Andrade RB

更新日期：2014-07-16 00:00:00