共查询到20条相似文献,搜索用时 15 毫秒
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《Nucleosides, nucleotides & nucleic acids》2013,32(5-8):939-941
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Jean M. J. Tronchet Imre Kovacs Françoise Barbalat-Rey Naz Dolatshahi 《Nucleosides, nucleotides & nucleic acids》2013,32(1-3):337-347
Abstract TSAO analogues, 2′,5′-O-bis-TBDMS uridine-3′-spiro-3′-isoxazolidin-5′-one (9) and its thymidine congener 10, as well as model spiro sugar derivatives (3 and 4) have been prepared from the corresponding nitrones through a stereospecific tandem nucleophilic attack. Compounds 9 and 10 which are bioisosters of TSAO-U and T respectively but which lack an amino group on the spiro ring, were found inactive against both HIV-1 and HIV-2. 相似文献
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Claire Pierra Sureyya Olgen Sócrates C. H. Cavalcanti Yung-Chi Cheng Raymond F. Schinazi Chung K. Chu 《Nucleosides, nucleotides & nucleic acids》2013,32(1-2):253-268
Abstract Cyclopropyl carbocyclic nucleosides have been synthesized from the key intermediate 2 which was converted to the mesylated cyclopropyl methyl alcohol 3. Condensation of compound 3 with various purine and pyrimidine bases gave the desired nucleosides. All synthesized nucleosides were evaluated for antiviral activity and cellular toxicity. Among them adenine 22 and guanine 23 derivatives showed moderate antiviral activity against HIV-1 and HBV. None of the other compounds showed any significant antiviral activities against HIV-1, HBV, HSV-1 and HSV-2 in vitro up to 100μM. 相似文献
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de Castro S Andrei G Snoeck R Balzarini J Camarasa MJ Velázquez S 《Nucleosides, nucleotides & nucleic acids》2007,26(6-7):625-628
TSAO derivatives are a unique group of potent and highly specific inhibitors of HIV-1 replication. We have recently reported 4'-ureido TSAO derivatives that are devoid of anti-HIV-1 activity, but inhibit human cytomegalovirus with an activity comparable to that of Ganciclovir. We herein report the synthesis and biological evaluation of novel 4'-ureido TSAO derivatives in order to evaluate the structural features required for anti-HCMV activity. Interestingly, these studies revealed that the compounds may inhibit HCMV at the DNA polymerase step via a non-nucleoside mechanism. 相似文献
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Zhi-Xian Wang Weili Duan Leonard I. Wiebe Erik De Clercq Jan Balzarini Edward E. Knaus 《Nucleosides, nucleotides & nucleic acids》2013,32(9):1397-1411
Abstract A group of 1-[(2-hydroxyethoxy)methyl]- (12) and 1-[(1,3-dihydroxy-2-propoxy)methyl]- (13) derivatives of 2,4-difluorobenzene possessing a variety of C-5 substituents (R = Me, H, I, NO2) were designed with the expectation that they may serve as acyclic 5-substituted-2′-deoxyuridine (thymidine) mimics. Compounds 12 and 13 (R = Me, H, I) were inactive as anticancer agents (C50 = 10?3 to 10?4 M range), whereas the 5-nitro compounds (12d, 13d) exhibited weak-to-moderate cytotoxicity (CC50 = 10?5 to 10?6 M range) against a variety of cancer cell lines. All compounds prepared (12a-d, 13a-d) were inactive as antiviral agents in a broad-spectrum antiviral screen that also included the human immunodeficiency virus (HIV-1 and HIV-2) and herpes simplex virus (HSV-1 and HSV-2). 相似文献
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Synthesis and antiviral activities of novel acylhydrazone derivatives targeting HIV-1 capsid protein
Baohe Tian Meizi He Shixing Tang Indira Hewlett Zhiwu Tan Jiebo Li Yinxue Jin Ming Yang 《Bioorganic & medicinal chemistry letters》2009,19(8):2162-2167
HIV-1 capsid protein (CA) plays important roles in the viral replication cycle. A number of acylhydrazone derivatives that act as inhibitors of HIV-1 CA assembly, were designed and synthesized. The synthesized compounds were tested for their antiviral activities and cytotoxicities using CEM cells. Some derivatives also were assayed for their ability to inhibit HIV-1 CA assembly in vitro. Among them, compounds 14f and 14i display the most promising potency with EC50 values of 0.21 and 0.17 μΜ, respectively. 相似文献
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Annie-Fransoise Maggio Valerie Boyer Anne-Marie Aubertin Georges Obert André Kirn Jean-Louis Imbach 《Nucleosides, nucleotides & nucleic acids》2013,32(7):1431-1449
Abstract 2′,3′-Secothymidine derivatives related to AZT and ddT have been synthesized and evaluated for their activity against HIV-1 and various DNA and RNA viruses. These acyclic nucleosides exhibited no antiviral activities. 相似文献
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《Journal of liposome research》2013,23(4):669-691
AbstractWe review our recent work on the use of liposomes for the delivery of antiviral agents to human immunodeficiency virus type-1 (HIV-1) infected cells, and antimycobactcrial drugs to cells harboring Mycobacterium avium complex or Mycobacterium tuberculosis. Soluble CD4 has been used to target liposomes to HIV-1-infected cells. Antisense oligodeoxynucleotides have been effectively delivered into HIV-1-infected macrophages using pH-sensitive liposomes. pH-sensitive liposomes with serum stability are being developed as in vivo delivery vehicles. Liposomes encapsulating an HIV-1 protease inhibitor were more effective in inhibiting virus production in infected macrophages than the free drug. Anionic liposomes were found to inhibit HIV-1 infectivity, while cationic liposomes had a differential toxicity for HIV-1-infected macrophages. Lipophilic sulfated cyclodextrins have been synthesized as novel antiviral agents. Liposome-encapsulated ciprofloxacin treatment reduced the number of viable M. avium in macrophages more than the free antibiotic. Liposome-encapsulated paromomycin and sparfloxacin were effective against M. tuberculosis inside macrophages, including multi-drug-resistant strains. Streptomycin encapsulated in liposomes and delivered intravenously or subcutaneously reduced the number of viable M. tuberculosis in infected mice and prevented mortality. 相似文献
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Yaseen A. Al-Soud Najim A. Al-Masoudi Thilo Schuppler Erik De Clercq Christophe Pannecouque 《Nucleosides, nucleotides & nucleic acids》2013,32(5):469-483
Microwave-assisted synthesis of novel acyclic C-nucleosides of 6-alkyl/aryl-3-(1,2-O-isopropylidene-D-ribo-tetritol-1-yl)[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles (5–12) and the 6-aryl-thiomethyl analogues 25–27 has been described. Deblocking of 5–12 and 25–27 afforded the free acyclic C-nucleosides 13–20, and 28–30, respectively. All of the synthesized compounds showed no inhibition against HIV-1 and HIV-2 replication in MT-4 cells. However, 6-(3,4-dichlorophenyl)-3-(1,2-O-isopropylidene-D-ribo-tetritol-1-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazole (6) is a potent inhibitor, in vitro, of the replication of HIV-2. These results suggest that compound 6 should be considered as a new lead in the development of antiviral agent. 相似文献
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Abstract The Vorbruggen and Niedballa's method(1) afforded new cyclopentano [d] pyrimidine-2,4-dione and octahydroquinazoline-2,4-dione nucleosides. Various modifications of these new derivatives enabled us to obtain HEPT related compounds which were tested against Human Immunodeficiency Virus-1 (HIV-1). Unfortunately, none of these compounds showed significant antiviral activity. 相似文献
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Junwon Kim Jeongjin Kwon Doohyun Lee Suyeon Jo Dong-Sik Park Jihyun Choi Eunjung Park Jong Yeon Hwang Yoonae Ko Inhee Choi Moon Kyeong Ju JiYe Ahn Junghwan Kim Sung-Jun Han Tae-Hee Kim Jonathan Cechetto Jiyoun Nam Sujin Ahn Jinhwa Lee 《Bioorganic & medicinal chemistry letters》2013,23(1):153-157
We identified a novel class of triazolothienopyrimidine (TTPM) compounds as potent HIV-1 replication inhibitors during a high-throughput screening campaign that evaluated more than 200,000 compounds using a cell-based full replication assay. Herein, we report the optimization of the antiviral activity in a cell-based assay system leading to the discovery of aryl-substituted TTPM derivatives (38, 44, and 45), which exhibited significant inhibition of HIV-1 replication with acceptable safety margins. These novel and potent TTPMs could serve as leads for further development. 相似文献
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Novel syntheses of 4′-modified cyclopentenyl pyrimidine C-nucleosides were performed via C-C bond formation using SN2 alkylation via the key intermediate mesylates 6 and 16, which were prepared from acyclic ketone derivatives. When antiviral evaluation of synthesized compound was performed against various viruses such as HIV-1, HSV-1 and HSV-2, isocytidine analogue 20 showed moderate anti-HIV activity in CEM cell line (EC50 = 13.1 μmol).7 相似文献
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《Nucleosides, nucleotides & nucleic acids》2013,32(4-7):711-714
The first TSAO derivative that lacks the amino group at the 3′-spiro moiety has been prepared. This molecule retained its HIV-1 specificity (NNRTI characteristic) but did not select for any of the classical NNRTI-specific mutations in the NNRTI binding pocket, including 138-Lys (TSAO resistant strain). 相似文献
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Jean M. J. Tronchet Imre Kovács Françoise Barbalat-Rey Margarita VegaHolm 《Nucleosides, nucleotides & nucleic acids》2013,32(6):1115-1123
Abstract Reaction of 2′,5′-di-O-TBDMS-3′-ketouridine 1 with L-cysteine yielded in good yield a resolvable mixture of the two expected epimeric spironucleosides 2 and 3. Amidification of their carboxylic group took place readily and the ribo carboxamide 4 was oxidized to the corresponding sulfoxide 6. Despite their similarity to TSAO derivatives these compounds did not exhibit usable anti-HIV activity. 相似文献
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Rosa Alvarez María-Luisa Jimeno Erik De Clercq Jan Balzarini María-José Camarasa 《Nucleosides, nucleotides & nucleic acids》2013,32(7-9):1033-1036
Abstract Novel TSAO-T analogues, in which the 3′-spiroaminooxatioledioxide moiety has been replaced by other 3′-spiro moieties bearing a NH group at the same position as the 4″-NH2 of TSAO-T have been prepared and evaluated for their inhibitory effect on HIV replication in cell culture. In contrast to the prototype compound TSAO-T, the novel TSAO derivatives were inactive at subtoxic concentrations. 相似文献
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Kosaku Hirota Hiroshi Hosono Yukio Kitade Yoshifumi Maki Chung K. Chu Raymond F. Schinazi 《Nucleosides, nucleotides & nucleic acids》2013,32(10):1731-1738
Abstract 3′-Modified thymidine analogs, such as 3′-O-[(methylthio)thio-carbonyl]thymidine (4), 3′-O-thiocarbamoylthymidine (7), and N-(3′-deoxy-thymidin-3′-y1)phosphoramidates (9a, b), were synthesized from thymidine derivatives (1), (5), and (8), respectively, as potential anti-human immunodeficiency virus type 1 (HIV-1) agents. No significant activity against HIV-1 was, however, observed with any of these compounds. 相似文献
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Lobatón E Velázquez S San-Félix A De Clercq E Balzarini J Camarasa MJ 《Nucleosides, nucleotides & nucleic acids》2001,20(4-7):711-714
The first TSAO derivative that lacks the amino group at the 3'-spiro moiety has been prepared. This molecule retained its HIV-1 specificity (NNRTI characteristic) but did not select for any of the classical NNRTI-specific mutations in the NNRTI binding pocket, including 138-Lys (TSAO resistant strain). 相似文献
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