Modified 5′-Trityl Nucleosides as Inhibitors of<i>Plasmodium falciparum</i>dUTPase
作者:Gian Filippo Ruda、Corinne Nguyen、Przemysław Ziemkowski、Krzysztof Felczak、Ganasan Kasinathan、Alexander Musso-Buendia、Christian Sund、Xiao Xiong Zhou、Marcel Kaiser、Luis M. Ruiz-Pérez、Reto Brun、Tadeusz Kulikowski、Nils Gunnar Johansson、Dolores González-Pacanowska、Ian H. Gilbert
DOI:10.1002/cmdc.201000445
日期:2011.2.7
2′‐Deoxyuridine triphosphate nucleotidohydrolase (dUTPase) is a potential drug target for the treatment of malaria. We previously reported the discovery of 5′‐tritylated analogues of deoxyuridine as selective inhibitors of this Plasmodiumfalciparum enzyme. Herein we report further structure–activity studies; in particular, variations of the 5′‐trityl group, the introduction of various substituents
Deoxyuridine derivatives of Formula (I′); where A is O, S or CH
2
; B is O, S or CHR
3
; R
1
is H, or various substituents; R
2
is H, F; R
3
is H, F, OH, NH
2
; or R
2
and R
3
together form a chemical bond; D is —NHCO—, —CONH—, —O—, —C(═O)—, —CH═CH, —C≡C—, —NR
5
—; R
4
is hydrogen or various substituents; R
5
is H, C
1
-C
4
alkyl, C
1
-C
4
alkanoyl; E is Si or C; R
6
, R
7
and R
8
are independently selected from C
1
-C
8
alkyl, C
2
-C
8
alkenyl, C
2
-C
8
alkynyl, or a stable monocyclic, bicyclic or tricyclic ring system have utility in the prophylaxis of treatment of parasitic diseases such as malaria.
Deoxyuridine derivatives of the formula
where
A is O, S or CH
2
; B is O, S or CHR
3
;
R
1
is H, or various substituents;
R
2
is H, F;
R
3
is H, F, OH, NH
2
; or R
2
and R
3
together form a chemical bond;
D is —NHCO—, —CONH—, —O—, —C(═O)—, —CH═CH, —C
═
C—, —NR
5
—; R
4
is hydrogen or various substituents;
R
5
is H, C
1
-C
4
alkyl, C
1
-C
4
alkanoyl;
E is Si or C;
R
6
, R
7
and R
8
are independently selected from C
1
-C
8
alkyl, C
2
-C
8
alkenyl, C
2
-C
8
alkynyl, or a stable monocyclic, bicyclic or tricyclic ring system
have utility in the prophylaxis o treatment of parasitic diseases such as malaria
Novel N-1-substituted thymine derivatives related to 1-[(Z)-4-(triphenylmethoxy)-2-butenyl]thymine have been synthesized and evaluated against thymidine kinase-2 (TK-2) and related nucleoside kinases [i.e., Drosophila melanogaster deoxynucleoside kinase (Dm-dNK) and herpes simplex virus type 1 thymidine kinase (HSV-1 TK)]. The thymine base has been tethered to a distal triphenylmethoxy moiety through a polymethylene chain (n = 3-8) or through a (2-ethoxy)ethyl spacer. Moreover, substitutions at position 4 of one of the phenyl rings of the triphenylmethoxy moiety have been performed. Compounds with a hexamethylene spacer (18, 26b, 31) displayed the highest inhibitory values against TK-2 (IC50 = 0.3-0.5 mu M). Compound 26b competitively inhibited TK-2 with respect to thymidine and uncompetitively with respect to ATP. A rationale for the biological data was provided by docking some representative inhibitors into a homology-based model of human TK-2. Moreover, two of the most potent TK-2 inhibitors (18 and 26b) that also inhibit HSV-1 TK were able to reverse the cytostatic activity of 1-(beta-D-arabinofuranosyl)thymine (Ara-T) and ganciclovir in HSV-1 TK-expressing OST-TK-/HSV-1 TK+ cell cultures.
Tzerpos, Nikolaos I.; Zarkadis, Antonios K.; Kreher, Richard P., Journal of the Chemical Society. Perkin transactions II, 1995, # 4, p. 755 - 762
作者:Tzerpos, Nikolaos I.、Zarkadis, Antonios K.、Kreher, Richard P.、Repas, Liesel、Lehnig, Manfred