- Synthesis and biological assay of new 2’-deoxyuridine dimers containing a 1,2,3-triazole linker. Part I
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We describe a simple method for the synthesis of modified dinucleosides containing pyrimidine nucleoside analogues (2’-deoxyuridine, thymidine and 5-fluoro-2’-deoxyuridine). Six different dimers with a 1,2,3-triazole linkage were obtained by azide–alkyne
- Michalska, Lucyna,Wawrzyniak, Dariusz,Szymańska-Michalak, Agnieszka,Barciszewski, Jan,Boryski, Jerzy,Baraniak, Dagmara
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- SALT OF TRIPHOSPHATE PHOSPHORAMIDATES OF NUCLEOTIDES AS ANTICANCER COMPOUNDS
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The present invention relates to salts of triphosphate phosphoramidates which are useful in the treatment of cancer.
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Paragraph 00116
(2020/10/20)
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- Synthesis and in vitro anticancer activity of new gemcitabine-nucleoside analogue dimers containing methyltriazole or ester-methyltriazole linker
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Two series of novel gemcitabine-nucleoside analogue dimers were synthesized using the ‘click’ chemistry approach. In the first series of dimers (21–30), the nucleoside units were connected with a stable methyltriazole 4N-3′(or 5′)C linker whereas in the second series (31–40) with a cleavable ester-methyltriazole 4N-3′(or 5′)C linker. Dimers 21–40 were evaluated for their cytotoxic activity in five human cancer cell lines such as cervical (HeLa), nasopharyngeal (KB), lung (A549), brain (U87), liver (HepG2) and normal dermal fibroblast cell line (HDF) using the sulforhodamine B (SRB) assay. Compound 29 comprising two gemcitabine (dFdC) units exhibited the highest activity among dimers 21–30. The activity of compound 29 was higher than that of dFdC in all the studied cancer cell lines. A similar order of activity was observed for compounds 25, 28, and 30. The best activity among all the dimers synthesized was displayed by compound 39, comprising two gemcitabine units with a cleavable linker. The activity of compound 39 was 5 to 9 times higher than that of dFdC, depending on the cell line. In addition, marked cytotoxic activity was shown by compounds 31, 36, 38, and 40.
- Trznadel, Roksana,Singh, Aleksandra,Kleczewska, Natalia,Liberska, Joanna,Ruszkowski, Piotr,Celewicz, Lech
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supporting information
p. 2587 - 2594
(2019/08/12)
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- 2',5'-DIDEOXY-5-FLUOROURIDINE DERIVATIVES HAVING CYTOTOXIC ACTIVITY, A PROCESS FOR THE MANUFACTURE THEREOF AND APPLICATION THEREOF
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The subject matter of the invention is novel 2',5'-dideoxy-5-fluorouridine derivatives of general formula 1. (1) wherein R1 denotes cinchona alkaloid fragment with defined absolute configuration at C-8and C-9 atoms. In a second aspect, the subj
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Page/Page column 20; 21
(2015/04/15)
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- Synthesis and structure-activity relationship of uracil nucleotide derivatives towards the identification of human P2Y6 receptor antagonists
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P2Y6 receptor (P2Y6-R) is involved in various physiological and pathophysiological events. With a view to set rules for the design of UDP-based reversible P2Y6-R antagonists as potential drugs, we established structure-activity relationship of UDP analogues, bearing modifications at the uracil ring, ribose moiety, and the phosphate chain. For instance, C5-phenyl- or 3-NMe-uridine-5′-α,β-methylene-diphosphonate, 16 and 23, or lack of 2′-OH, in 12-15, resulted in loss of both agonist and antagonist activity toward hP2Y6-R. However, uridylyl phosphosulfate, 19, selectively inhibited hP2Y6-R (IC50 112 μM) versus P2Y2/4-Rs. In summary, we have established a comprehensive SAR for hP2Y6-R ligands towards the development of hP2Y6-R antagonists.
- Meltzer, Diana,Ethan, Ophir,Arguin, Guillaume,Nadel, Yael,Danino, Ortal,Lecka, Joanna,Sévigny, Jean,Gendron, Fernand-Pierre,Fischer, Bilha
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p. 5764 - 5773
(2015/11/11)
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- Synthesis of 2'-deoxyuridine and 5-fluoro-2'-deoxyuridine derivatives and evaluation in antibody targeting studies
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Derivatives of 2'-deoxyuridine and of the anticancer agent 5-fluoro-2'- deoxyuridine (FdUR) were linked indirectly via a human serum albumin carrier (HSA) to the murine antiosteosarcoma monoclonal antibody 791T/36. Starting from the 2'-deoxyuridines 1a an
- Henn,Garnett,Chhabra,Bycroft,Baldwin
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p. 1570 - 1579
(2007/10/02)
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- Synthesis and γ-radiolysis of 2'-deoxy-5-fluorouridine and 5-fluorouridine derivatives
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Seventeen compounds having a variety of substituents at the 3- and 5'-positions of 2'-deoxy-5-fluorouridine (5-FUdR) and 5-fluorouridine (5-FUR) were synthesizedd, and their γ-radiolysis in aqueous solutions were studied. The compounds having thioureido (RNHCSNH, R = H, PhCH2, acyl) and thiocarbonylamino (XCSNH, X = PhCH2S, PhO) groups at the 3-position of 5-FUdR were efficiently cleaved to give 5-FUdR with high G values upon γ-irradiation of their aqueous solutions. The active species for these cleavage reactions were hydrated electron (e-(aq)), H. and HO.. However, the compounds having a dimethylsulfoxyimino group at 3-position of 5-FUdR and 5-FUR afforded 5-FUdR and 5-FUR only under the radiolysis conditions where e-(aq) becomes a principal active species. The compound having a 2-benzoylthiazoylthiocarbonylamino group at the 3-position of 5-FUdR showed the highest reactivity toward HO.. The mechanisms of these γ-radiolysis reactions are discussed. The examination of anticellular activities of γ-irradiated compounds having a thiocarbonylamino group at the 3-position of 5-FUdR toward murine Sarcoma 180 cells revealed that these compounds may be utilized as a candidate for a radiation-induced drug (RID).
- Kuroda,Hisamura,Matsukuma,Nishikawa,Morimoto,Ashizawa,Nakamizo,Otsuji
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p. 1133 - 1142
(2007/10/02)
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