Synthesis, 18F‐Radiolabelling and Biological Evaluations of C‐6 Alkylated Pyrimidine Nucleoside Analogues
摘要:
Synthesis of pyrimidine derivatives with a side-chain attached to the C-6 of pyrimidine ring (6-14) is reported. Target compounds 8 and 12 were subjected to in vitro phosphorylation tests, determination of their binding affinities to herpes simplex virus (HSV-1) thymidine kinase (TK) and catalytic turnover constants. Fluorinated pyrimidine derivative 12 (40 muM) exhibited better binding affinity for HSV-1 TK than acyclovir (ACV, 170 muM) and ganciclovir (GCV, 48 muM). Catalytic turnover constant (k(cat)) of 12 (0.08 s(-1)) was close to the k(cat) values of ACV (0.10 s(-1)) and GCV (0.10 s(-1)). Furthermore, compounds 8 and 12 showed no cytotoxic effects in HSV-1 TK-transduced and non-transduced cell lines. Besides, compounds 8 and 12 did not exhibit antiviral or cytostatic activities against several viruses and malignant tumor cell lines that were evaluated. The new fluorinated pyrimidine derivative 16 that is phosphorylated by HSV-1 TK could be developed as non-toxic PET-tracer molecule. Thus, F-18 labelling of the precursor 14 was performed by nucleophilic substitution using [F-18] tetrabutylammonium fluoride as the fluorinating reagent.
Synthesis, 18F‐Radiolabelling and Biological Evaluations of C‐6 Alkylated Pyrimidine Nucleoside Analogues
摘要:
Synthesis of pyrimidine derivatives with a side-chain attached to the C-6 of pyrimidine ring (6-14) is reported. Target compounds 8 and 12 were subjected to in vitro phosphorylation tests, determination of their binding affinities to herpes simplex virus (HSV-1) thymidine kinase (TK) and catalytic turnover constants. Fluorinated pyrimidine derivative 12 (40 muM) exhibited better binding affinity for HSV-1 TK than acyclovir (ACV, 170 muM) and ganciclovir (GCV, 48 muM). Catalytic turnover constant (k(cat)) of 12 (0.08 s(-1)) was close to the k(cat) values of ACV (0.10 s(-1)) and GCV (0.10 s(-1)). Furthermore, compounds 8 and 12 showed no cytotoxic effects in HSV-1 TK-transduced and non-transduced cell lines. Besides, compounds 8 and 12 did not exhibit antiviral or cytostatic activities against several viruses and malignant tumor cell lines that were evaluated. The new fluorinated pyrimidine derivative 16 that is phosphorylated by HSV-1 TK could be developed as non-toxic PET-tracer molecule. Thus, F-18 labelling of the precursor 14 was performed by nucleophilic substitution using [F-18] tetrabutylammonium fluoride as the fluorinating reagent.
A series of novel N-alkylated C-6-isobutyl- or -propyl pyrimidine derivatives were synthesized and their antiproliferative effect was evaluated on a panel of tumor cell lines including leukemia cell line K562 and normal diploid human fibroblasts. N-methoxymethylated 5-methylpyrimidin-2,4-dione with di (benzyloxy)isobutyl at C-6 (14b) showed the strongest effect on the cell growth at micromolar concentrations. Mechanisms of action for the lipophilic compound 14b predicted in silico, pointed to its anticancer and antimetastatic potential exerted through inhibition of DNA or RNA polymerases and adhesion molecules. The latter mechanism has been supported in vitro for adherent tumor cell lines. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis, <sup>18</sup>F‐Radiolabelling and Biological Evaluations of C‐6 Alkylated Pyrimidine Nucleoside Analogues
作者:Silvana Raić‐Malić、Anass Johayem、Simon M. Ametamey、Sanja Batinac、Erik De Clercq、Gerd Folkers、Leonardo Scapozza
DOI:10.1081/ncn-200033914
日期:2004.1.1
Synthesis of pyrimidine derivatives with a side-chain attached to the C-6 of pyrimidine ring (6-14) is reported. Target compounds 8 and 12 were subjected to in vitro phosphorylation tests, determination of their binding affinities to herpes simplex virus (HSV-1) thymidine kinase (TK) and catalytic turnover constants. Fluorinated pyrimidine derivative 12 (40 muM) exhibited better binding affinity for HSV-1 TK than acyclovir (ACV, 170 muM) and ganciclovir (GCV, 48 muM). Catalytic turnover constant (k(cat)) of 12 (0.08 s(-1)) was close to the k(cat) values of ACV (0.10 s(-1)) and GCV (0.10 s(-1)). Furthermore, compounds 8 and 12 showed no cytotoxic effects in HSV-1 TK-transduced and non-transduced cell lines. Besides, compounds 8 and 12 did not exhibit antiviral or cytostatic activities against several viruses and malignant tumor cell lines that were evaluated. The new fluorinated pyrimidine derivative 16 that is phosphorylated by HSV-1 TK could be developed as non-toxic PET-tracer molecule. Thus, F-18 labelling of the precursor 14 was performed by nucleophilic substitution using [F-18] tetrabutylammonium fluoride as the fluorinating reagent.