Here, we synthesized a newseries of
mono
- and
bis
(dimethylpyrazolyl)-
s
-triazine derivatives.
The synthetic methodology involved the reaction of different mono-
and dihydrazinyl-
s
-triazine derivatives with acetylacetone
in the presence of triethylamine to produce the corresponding target
products in high yield and purity. The antiproliferative activity
of the novel
mono
- and
bis
(dimethylpyrazolyl)-
s
-triazine derivatives was studied against three cancer
cell lines, namely, MCF-7, HCT-116, and HepG2.
N
-(4-Bromophenyl)-4-(3,5-dimethyl-1
H
-pyrazol-1-yl)-6-morpholino-1,3,5-triazin-2-amine
4f
,
N
-(4-chlorophenyl)-4,6-bis(3,5-dimethyl-1
H
-pyrazol-1-yl)-1,3,5-triazin-2-amine
5c
, and
4,6-
bis
(3,5-dimethyl-1
H
-pyrazol-1-yl)-
N
-(4-methoxyphenyl)-1,3,5-triazin-2-amine
5d
showed promising activity against these cancer cells:
4f
[(IC
50
= 4.53 ± 0.30 μM (MCF-7); 0.50 ±
0.080 μM (HCT-116); and 3.01 ± 0.49 μM (HepG2)];
5d
[(IC
50
= 3.66 ± 0.96 μM (HCT-116);
and 5.42 ± 0.82 μM (HepG2)]; and
5c
[(IC
50
= 2.29 ± 0.92 μM (MCF-7)]. Molecular docking
studies revealed good binding affinity with the receptor targeting
EGFR/PI3K/AKT/mTOR signaling cascades. Compound
4f
exhibited
potent EGFR inhibitory activity with an IC
50
value of 61
nM compared to that of Tamoxifen (IC
50
value of 69 nM),
with EGFR inhibition of 83 and 84%, respectively, at a concentration
of 10 μM. Interestingly,
4f
showed remarkable PI3K/AKT/mTOR
inhibitory activity with 0.18-, 0.27-, and 0.39-fold decrease in their
concentration (reduction in controls from 6.64, 45.39, and 86.39 ng/mL
to 1.24, 12.35, and 34.36 ng/mL, respectively). Hence, the synthetic
1,3,5-triazine derivative
4f
exhibited promising antiproliferative
activity in HCT-116 cells through apoptosis induction by targeting
the EGFR and its downstream pathway.