- Synthesis of Dihydroquinoline-Based Derivatives of Fluorescent Rhodamine Dyes for Nucleic Acid Analysis by a Real-Time Polymerase Chain Reaction
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Abstract: An optimized synthesis scheme for the dihydroquinoline-based derivatives of xanthene fluorescent dye has been developed. For the first time, their use as effective fluorophores in hybridization probes for real-time PCR has been demonstrated with the detection on an individual spectral channel.
- Alekseev, Y. I.,Bayramov, V. M.,Kurochkin, V. E.,Matvienko, I. V.,Parygina, N. A.
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Read Online
- Optimization of Acryloylphenylcarboxamides as Inhibitors of ABCG2 and Comparison with Acryloylphenylcarboxylates
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ABCG2 belongs to the superfamily of ATP binding cassette (ABC) proteins and is associated with the limited success of anticancer chemotherapy, given its responsibility for the cross-resistance of tumor cells, known as multidrug resistance (MDR). Several classes of ABCG2 inhibitors were developed for increasing the efficacy of chemotherapy. A series of chalcones coupled to an additional aromatic residue was synthesized and investigated for their inhibition of ABC transporters. In our previous work we determined the preferred position of the linker on the A-ring to be ortho, and found several substitution patterns at the additional ring that improved potency. In this study we investigated whether a methoxy group that improved the inhibitory activity of chalcones would also be beneficial for the acryloylphenylcarboxamide scaffold. Indeed, this modification led to highly potent ABCG2 inhibitors. To support the hypothesis of a beneficial effect of the amide linker, six acryloylphenylcarboxylates were synthesized and investigated for their inhibitory activity. Replacement of the amide linker with an ester group resulted in decreased inhibition. Molecular modeling showed that the conformational preference of both series differs, thereby explaining the positive effect of the amide linker. Several compounds were characterized in detail by investigating their intrinsic cytotoxicity and capacity to reverse MDR in MTT assays and their effect on vanadate-sensitive ATPase activity.
- Kraege, Stefanie,Stefan, Katja,K?hler, Sebastian C.,Wiese, Michael
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Read Online
- One-Pot Synthesis of Spirocyclopenta[ a]indene Derivatives via a Cascade Ring Expansion and Intramolecular Friedel-Crafts-Type Cyclization
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A one-pot efficient synthetic approach for the rapid construction of spirocyclopenta[a]indene derivatives has been developed via an iodine-initiated cascade ring expansion and intramolecular Friedel-Crafts-type cyclization from propargyl alcohol-tethered alkylidenecyclobutanes under mild conditions with broad substrate scope. This cascade process can be elegantly conducted on a gram scale. A plausible reaction mechanism has been proposed on the basis of a series of deuterium labeling and control experiments.
- Li, Quanzhe,Liu, Jiaxin,Wei, Yin,Shi, Min
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supporting information
p. 2438 - 2455
(2020/01/31)
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- Macrocyclic serine protease inhibitors, pharmaceutical compositions thereof, and their use for treating HCV infections
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Provided herein are macrocyclic serine protease inhibitor compounds, for example, of Formula I, and pharmaceutical compositions and processes of preparation thereof. Also provided are methods of their use for the treatment of an HCV infection in a host in need thereof.
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Page/Page column 101; 102; 103
(2016/06/28)
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- Design and synthesis of azaisoflavone analogs as phytoestrogen mimetics
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A series of azaisoflavone analogs were designed and synthesized and their transactivation activities and binding affinities for ERα and ERβ were investigated. Among these compounds, 2b and 3a were the most potent with 6.5 and 1.1 μM of EC50, respectively. Molecular modeling study showed putative binding modes of the compound 3a in the active site of ERα and ERβ, which were similar with that of genistein and provided insight of the effect of N-alkyl substitution of azaisoflavones on ERβ activity. Also, a biphasic effect of azaisoflavone analogs on MCF-7 cell growth depending on their concentrations was investigated.
- Gim, Hyo Jin,Li, Hua,Jung, So Ra,Park, Yong Joo,Ryu, Jae-Ha,Chung, Kyu Hyuck,Jeon, Raok
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p. 107 - 118
(2014/08/18)
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- Ru(ii)-catalyzed intermolecular ortho-C-H amidation of aromatic ketones with sulfonyl azides
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Ru(ii)-catalyzed intermolecular ortho-C-H amidation of weakly coordinating aromatic ketones with sulfonyl azides is reported. The developed reaction protocol can be extended to various substituted aromatic ketones to afford a wide range of desired C-N bond formation products in good yields.
- Bhanuchandra,Ramu Yadav,Rit, Raja K.,Rao Kuram, Malleswara,Sahoo, Akhila K.
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supporting information
p. 5225 - 5227
(2013/06/27)
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- QUINAZOLINE DERIVATIVES AS PDE10A ENZYME INHIBITORS
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This invention is directed to compounds, which are PDE10A enzyme inhibitors. The invention provides a pharmaceutical composition comprising a therapeutically effective amount of a compound of the invention and a pharmaceutically acceptable carrier. The pr
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Page/Page column 48; 49; 50
(2013/04/24)
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- Highly stereoselective chemoenzymatic synthesis of the 3 h -isobenzofuran skeleton. access to enantiopure 3-methylphthalides
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A straightforward synthesis of (S)-3-methylphthalides has been developed, with the key asymmetric step being the bioreduction of 2-acetylbenzonitriles. Enzymatic processes have been found to be highly dependent on the pH value, with acidic conditions being required to avoid undesired side reactions. Baker's yeast was found to be the best biocatalyst acting in a highly stereoselective fashion. The simple treatment of the reaction crudes with aqueous HCl has provided access to enantiopure (S)-3-methylphthalides in moderate to excellent yields.
- Mangas-Sanchez, Juan,Busto, Eduardo,Gotor-Fernandez, Vicente,Gotor, Vicente
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supporting information; experimental part
p. 1444 - 1447
(2012/06/01)
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- MACROCYCLIC SERINE PROTEASE INHIBITORS USEFUL AGAINST VIRAL INFECTIONS, PARTICULARLY HCV
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Provided herein are macrocyclic serine protease inhibitor compounds, for example, of Formula (Ia) or (Ib), pharmaceutical compositions comprising the compounds, and processes of preparation thereof. Also provided are methods of their use for the treatment of an HCV infection in a host in need thereof.
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Page/Page column 144-145
(2011/02/24)
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- MACROCYCLIC SERINE PROTEASE INHIBITORS
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Provided herein are macrocyclic serine protease inhibitor compounds, for example, of Formula Ia or Ib, pharmaceutical compositions comprising the compounds, and processes of preparation thereof. Also provided are methods of their use for the treatment of an HCV infection in a host in need thereof.
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- MACROCYCLIC SERINE PROTEASE INHIBITORS
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Provided herein are macrocyclic serine protease inhibitor compounds, for example, of Formula I, pharmaceutical compositions comprising the compounds, and processes of preparation thereof. Also provided are methods of their use for the treatment of an HCV infection in a host in need thereof
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- MACROCYCLIC SERINE PROTEASE INHIBITORS
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Provided herein are macrocyclic serine protease inhibitor compounds, for example, of Formula I, pharmaceutical compositions comprising such compounds, and processes of preparation thereof. Also provided are methods of their use for the treatment of an HCV infection in a host in need thereof.
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Page/Page column 118
(2009/03/07)
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- Macrocyclic Inhibitors of Hepatitis C Virus
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Compounds of the formula (I): and N-oxides, salts and stereoisomers thereof wherein A is OR1, NHS(═O)pR2, NHR3, NRaRb, C(═O)NHR3 or C(═O)NRaRb wherein; R1 is hydrogen, C1-C6alkyl, C0-C3alkylenecarbocyclyl, C0-C3alkyleneheterocyclyl; R2 is C1-C6alkyl, C0-C3alkylenecarbocyclyl, C0-C3alkyleneheterocyclyl or NRaRb; R3 is C1-C6alkyl, C0-C3alkylenecarbocyclyl, C0-C3alkyleneheterocyclyl, —OC1-C6alkyl, —OC0-C3alkylenecarbocyclyl, —OC0-C3alkyleneheterocyclyl; wherein any alkyl, carbocyclyl or heterocycylyl in R1, R2 or R3 are optionally substituted p is independently 1 or 2; n is 3, 4, 5 or 6; denotes an optional double bond; Rq is H or when L is CRz, Rq can also be C1-C6alkyl; Ry and Ry′ are independently C1-C6alkyl; L is N or CRz; Rz is H or forms a double bond with the asterisked carbon; W is —CH2—, —O—, —OC(═O)NH—, —OC(═O)—, —S—, —NH—, —NRa, —NHS(═O)2—, —NHC(=0)NH— or —NHC(═O)—, —NHC(═S)NH— or a bond; R8 is an optionally substituted ring system containing 1 or 2 saturated, partially saturated or unsaturated carbo or heterocyclic rings have utility in the inhibition of NS-3 serine proteases, such as flavivirus infections.
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(2009/02/11)
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- A mild, one-pot synthesis of 4-quinolones via sequential Pd-catalyzed amidation and base-promoted cyclization
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(Chemical Equation Presented) A mild, one-pot synthesis of 4-quinolones is described. Under the optimal conditions, a variety of 2-substituted 4-quinolones were synthesized via sequential palladium-catalyzed amidation of 2′-bromoacetophenones followed by base-promoted intramolecular cyclization.
- Huang, Jinkun,Chen, Ying,King, Anthony O.,Dilmeghani, Mina,Larsen, Robert D.,Faul, Margaret M.
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supporting information; experimental part
p. 2609 - 2612
(2009/05/27)
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- Synthesis of azaisoflavones and their inhibitory activities of NO production in activated microglia
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A series of azaisoflavones were synthesized and their biological activities were evaluated for nitric oxide (NO) production and inducible NO synthase (iNOS) expression in BV-2 microglia cell lines. Among these compounds, compound 8d was the most potent with IC50 7.83 μM for inhibition of NO production. Also, compound 8d inhibited expression of iNOS in LPS-induced BV2 cells. This result suggests that compound 8d inhibited the production of NO by suppressing the expression of iNOS.
- Jin, Guo Hua,Ha, Sang Keun,Park, Hye Min,Kang, Bomi,Kim, Sun Yeou,Kim, Hee-Do,Ryu, Jae-Ha,Jeon, Raok
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supporting information; experimental part
p. 4092 - 4094
(2009/04/10)
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- Structure-activity relationship study on a novel series of cyclopentane-containing macrocyclic inhibitors of the hepatitis C virus NS3/4A protease leading to the discovery of TMC435350
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SAR analysis performed with a limited set of cyclopentane-containing macrocycles led to the identification of N-[17-[2-(4-isopropylthiazole-2-yl)-7-methoxy-8-methylquinolin-4-yloxy]- 13-methyl-2,14-dioxo-3,13-diazatricyclo [13.3.0.04,6]octadec-7-ene-4-carbonyl](cyclopropyl)sulfonamid e (TMC435350, 32c) as a potent inhibitor of HCV NS3/4A protease (Ki = 0.36 nM) and viral replication (replicon EC50 = 7.8 nM). TMC435350 also displayed low in vitro clearance and high permeability, which were confirmed by in vivo pharmacokinetic studies. TMC435350 is currently being evaluated in the clinics.
- Raboisson, Pierre,de Kock, Herman,Rosenquist, Asa,Nilsson, Magnus,Salvador-Oden, Lourdes,Lin, Tse-I,Roue, Natalie,Ivanov, Vladimir,Waehling, Horst,Wickstroem, Kristina,Hamelink, Elizabeth,Edlund, Michael,Vrang, Lotta,Vendeville, Sandrine,Van de Vreken, Wim,McGowan, David,Tahri, Abdellah,Hu, Lili,Boutton, Carlo,Lenz, Oliver,Delouvroy, Frederic,Pille, Geert,Surleraux, Dominique,Wigerinck, Piet,Samuelsson, Bertil,Simmen, Kenneth
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scheme or table
p. 4853 - 4858
(2009/05/11)
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- Discovery of novel potent and selective dipeptide hepatitis C virus NS3/4A serine protease inhibitors
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Starting from the previously reported HCV NS3/4A protease inhibitor BILN 2061 (1), we have used a fast-follower approach to identify a novel series of HCV NS3/4A protease inhibitors in which (i) the P3 amino moiety and its capping group have been truncated, (ii) a sulfonamide is introduced in the P1 cyclopropyl amino acid, (iii) the position 8 of the quinoline is substituted with a methyl or halo group, and (iv) the ring size of the macrocycle has been reduced to 14 atoms. SAR analysis performed with a limited set of compounds led to the identification of N-{17-[8-chloro-2-(4-isopropylthiazol-2-yl)-7-methoxyquinolin-4-yloxy]-2,14-dioxo-3,15-diazatricyclo [13.3.0.0 [Bartenschlager, R.; Lohmann, V. J. Gen. Virol. 2000, 81, 1631; Vincent Soriano, Antonio Madejon, Eugenia Vispo, Pablo Labarga, Javier Garcia-Samaniego, Luz Martin-Carbonero, Julie Sheldon, Marcelle Bottecchia, Paula Tuma, Pablo Barreiro Expert Opin. Emerg. Drugs, 2008, 13, 1-19]]octadec-7-ene-4-carbonyl}(1-methylcyclopropyl)(1-methylcyclopropyl)sulfonamide 19l an extremely potent (Ki = 0.20 nM, EC50 = 3.7 nM), selective, and orally bioavailable dipeptide NS3/4A protease inhibitor, which has features attractive for further preclinical development.
- Raboisson, Pierre,Lin, Tse-I,Kock, Herman de,Vendeville, Sandrine,Vreken, Wim Van de,McGowan, David,Tahri, Abdellah,Hu, Lili,Lenz, Oliver,Delouvroy, Frederic,Surleraux, Dominique,Wigerinck, Piet,Nilsson, Magnus,Rosenquist, Asa,Samuelsson, Bertil,Simmen, Kenneth
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scheme or table
p. 5095 - 5100
(2009/06/18)
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- HCV PROTEASE INHIBITORS
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This invention relates to the compounds of formula (I) shown below. Each variable in formula (I) is defined in the specification. These compounds can be used to treat hepatitis C virus infection.
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Page/Page column 47
(2008/12/07)
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- QUINAZOLINES FOR PDK1 INHIBITION
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The invention provides novel quinazoline compounds that are inhibitors of PDK1. Also provided are pharmaceutical compositions including the compounds, and methods of treating proliferative diseases, such as cancers, with the compounds or compositions.
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Page/Page column 345
(2008/06/13)
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- Practical synthesis of 2-(2-isopropylaminothiazol-4-yl)-7-methoxy-1H- quinolin-4-one: Key intermediate for the synthesis of potent HCV NS3 protease inhibitor BILN 2061
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Herein we describe the development of an efficient, safe and practical process for the synthesis of 7-methoxy-2-(2-amino-4-thiazolyl)quinoline. Our new process allowed for a more convergent approach and eliminates the use of potentially dangerous reagents such as diazomethane used in the previous discovery approach. Georg Thieme Verlag Stuttgart.
- Frutos, Rogelio P.,Haddad, Nizar,Houpis, Ioannis N.,Johnson, Michael,Smith-Keenan, Lana L.,Fuchs, Victor,Yee, Nathan K.,Farina, Vittorio,Faucher, Anne-Marie,Brochu, Christian,Hache, Bruno,Duceppe, Jean-Simon,Beaulieu, Pierre
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p. 2563 - 2567
(2008/02/04)
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- HCV NS-3 SERINE PROTEASE INHIBITORS
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Peptidomimetic compounds are described which inhibit the NS3 protease of the hepatitis C virus (HCV). The compounds have the formula where the variable definitions are as provided in the specification. The compounds comprise a carbocyclic P2 unit in conjunction with a novel linkage to those portions of the inhibitor more distal to the nominal cleavage site of the native substrate, which linkage reverses the orientation of peptidic bonds on the distal side relative to those proximal to the cleavage site.
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Page/Page column 117-118
(2008/06/13)
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- Hydroxyacetophenone-derived antagonists of the peptidoleukotrienes
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Considerations of the possible similarities between leukotriene D4 and its prototypical antagonist, FPL 55712, led to the development of a new series of leukotriene antagonists incorporating a hydroxyacetophenone group (e.g., the toluic acids 1
- Brown,Bersntein,Cronk,Dossett,Hebbel,Maduskuie Jr.,Shapiro,Vacek,Yee,Willard,Krell,Snyder
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p. 807 - 826
(2007/10/02)
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- Central Nervous System Active Compounds. XIV On the Cyclization of N-Acyl-N'-arylureas
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The cyclization of N-acyl-N'-arylureas in polyphosphoric acid has been reinvestigated.The product is not only the 4-substituted quinazolin-2(1H)-one as reported, but also contains the 2-acylaniline in major proportions.Two minor products have also been isolated.At 80 deg, an intermediate has been detected, the properties of which are consistent with it being the corresponding 2-acylphenylurea.Acyl ureas with strongly electron-withdrawing acyl groups from major amount of the corresponding anilide by the formal loss of cyanic acid.The application of this reaction tothe synthesis of quinazolinylphthalides has been investigated.
- Heinicke, Grant,Hung, Tran V.,Prager, Rolf H.,Ward, A. David
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p. 831 - 844
(2007/10/02)
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