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Design, synthesis, and biological evaluation of new thieno[2,3-d] pyrimidine derivatives as targeted therapy for PI3K with molecular modelling study.

ABSTRACT: Cancer is one of the most aggressive diseases characterised by abnormal growth and uncontrolled cell division. PI3K is a lipid kinase involved in cancer progression which makes it fruitful target for cancer control. 28 new morpholine based thieno[2,3-d] pyrimidine derivatives were designed and synthesised as anti-PI3K agents maintaining the common pharmacophoric features of several potent PI3K inhibitors. Their antiproliferative activity on NCI 60 cell lines as well as their enzymatic activity against PI3K isoforms were evaluated. Three compounds revealed good cytotoxic activities against breast cancer cell lines, especially T-47D. Compound VIb exhibited the best enzymatic inhibitory activity (72% & 84% on PI3Kβ & PI3Kγ), respectively and good activity on most NCI cell lines especially those with over expressed PI3K. Docking was carried out into PI3K active site which showed comparable binding mode to that of the PI-103 inhibitor. Compound VIb could be optimised to serve as a new chemical entity for discovering new anticancer agents.

SUBMITTER: Elmenier FM

PROVIDER: S-EPMC8725920 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundThe high prevalence of skin hyperpigmentation makes it necessary to search for remedies that could hinder this process. Among such substances, tyrosinase inhibitors can be distinguished, which may be pyrimidine derivatives.ObjectivesThis study aimed to investigate new compounds with anti-tyrosinase activity in 2-substituted tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine-4(3H)-one by an in vitro analysis and investigating their molecular docking.MethodsA molecular docking was performed using AutoDock 4.0 with the 3-dimensional structure of tyrosinase of the fungus Agaricus bisporus from the Protein Data Bank (PDB; rcsb.org) with identification number 2Y9X. A synthesis of 2-substituted tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine-4(3H)-one was carried out during the heterocyclization reaction of azomethine derivatives of 2-amino-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide in glacial acetic acid with the addition of dimethyl sulfoxide. Tyrosinase activity was determined in vitro by the spectrophotometric method.ResultsMolecular docking data suggest the feasibility of synthesizing 2-substituted tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine-4(3H)-one as possible tyrosinase inhibitors. Of particular interest are compounds with hydroxy groups in the radical. Next, pharmacological screening showed that the leading compound is 4g. It is likely that metal-ligand interactions are the main interactions in the active site of tyrosinase because kojic acid, hydroquinone, and lactic acid (reference compounds), as well as compounds with only hydroxy groups in phenyl substituents (4b, 4c, and 4g), have the greatest anti-tyrosinase activity.ConclusionsAs a result of molecular docking studies, the feasibility of synthesizing 2-substituted tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine-4(3H)-one as potential tyrosinase inhibitors was justified. 2-Substituted tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidine-4(3H)-one was obtained using new synthesis conditions. The leading compound is 4g containing a fragment of 2,4-dihydroxybenzene.

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Design, synthesis, and biological evaluation of new thieno[2,3-d] pyrimidine derivatives as targeted therapy for PI3K with molecular modelling study.

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