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Published on: May 9, 2025
Synthesis, molecular docking and biological evaluation of 1,2,4-oxadiazole based novel non-steroidal derivatives
Shubham Kumar1, Pankaj Wadhwa1
1School of Pharmaceutical Sciences, Lovely Professional University, Jalandhar-Delhi G.T. Road, Phagwara, Punjab 144411, India.
Abstract:
Prostate cancer is one of the most prevalent cancers in men leading to second most death causing cancer in men. Despite the availability of multiple treatment still the prevalence is high for prostate cancer. Steroidal antagonists associated with poor bioavailability, side effects while non-steroidal antagonists show serious side effects like gynecomastia. Therefore, there is a need of potential candidate for the treatment of prostate cancer with better bioavailability, good therapeutic effect and minimal side effects. In the same context, we have designed the series, SP1-SP25 based 3-phenyl-5-styryl-1,2,4-oxadiazole as the core structure. We successfully synthesized all 25 molecules in this series and characterized them using 1H, 13C NMR, and mass spectroscopy. Subsequently, we conducted MTT assays using PC-3 cells and observed that all the compounds exhibited a dose-dependent decrease in cell viability. Notably, compounds SP04, SP16, and SP19 demonstrated a significant decrease in cell viability and exhibited potent activity compared to the other synthesized molecules and standard drug bicalutamide. Among them, SP04 emerged as the one of the most potent compounds with an IC50 value of 238.13 nM and an 89.99 % inhibition of PC-3 cells, compared to synthesized molecules and standard drug bicalutamide. Furthermore, we conducted ROS assays and androgen receptor inhibition assays using the potent compound SP04 and bicalutamide. The results indicated that SP04 increased ROS production and decreased androgen receptor expression dose-dependent manner. Additionally, we conducted a docking study to analyse the interaction patterns within the active site of the androgen receptor. ADMET analysis revealed that all the compounds exhibited favorable physicochemical properties and manageable toxicity profiles.
Insights
New 3-phenyl-5-styryl-1,2,4-oxadiazole compounds show promise for prostate cancer treatment. Compound SP04 significantly reduced prostate cancer cell viability and inhibited androgen receptor, offering a potential alternative with fewer side effects.
Area of Science:
- Medicinal Chemistry
- Oncology
- Drug Discovery
Background:
- Prostate cancer is a leading cause of cancer death in men, with existing treatments having limitations like poor bioavailability and severe side effects.
- There is a critical need for novel prostate cancer therapeutics with improved efficacy, bioavailability, and safety profiles.
Purpose of the Study:
- To design, synthesize, and evaluate a novel series of 3-phenyl-5-styryl-1,2,4-oxadiazole derivatives as potential prostate cancer therapeutics.
- To identify lead compounds with potent anti-cancer activity and favorable pharmacological properties.
Main Methods:
- Synthesis and characterization of 25 novel 3-phenyl-5-styryl-1,2,4-oxadiazole compounds using NMR and mass spectroscopy.
- In vitro evaluation of cytotoxicity using MTT assays on PC-3 prostate cancer cells.
- Assessment of reactive oxygen species (ROS) production and androgen receptor (AR) inhibition.
- Molecular docking studies and ADMET analysis for mechanism and pharmacokinetic profiling.
Main Results:
- All synthesized compounds demonstrated dose-dependent inhibition of PC-3 cell viability.
- Compounds SP04, SP16, and SP19 exhibited significant potency, with SP04 showing the highest activity (IC50 = 238.13 nM) and 89.99% inhibition.
- SP04 effectively increased ROS production and dose-dependently decreased AR expression, consistent with its anti-cancer effects.
- Docking studies supported AR interaction, and ADMET analysis indicated favorable drug-like properties.
Conclusions:
- The novel 3-phenyl-5-styryl-1,2,4-oxadiazole scaffold is a promising platform for developing new prostate cancer treatments.
- Compound SP04 is identified as a highly potent lead candidate with a promising mechanism of action involving ROS induction and AR inhibition.
- Further investigation of SP04 and related analogs is warranted for their potential clinical application in prostate cancer therapy.
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