AN IMPROVED RP-HPLC METHOD FOR THE SIMULTANEOUS ESTIMATION OF ASPIRIN, ATORVASTATIN, AND CLOPIDOGREL IN PHARMACEUTICAL FORMULATION USING EXPERIMENTAL DESIGN METHODOLOGY

Objective: In this study an improved RP-HPLC method was developed for the simultaneous estimation of Aspirin, Atrovastatin, and Clopidogrel in pharmaceutical dosage form. For improving the separation, an experimental design approach was employed. Methods: Factors–independent variables (Organic modifier, pH of the mobile phase and flow rate) were extracted from the preliminary study and as dependent three responses variables viz. Capacity factor of tR1, resolution between Atorvastatin and internal standard, retention time of tR4 were selected. To improve method development and optimization, Derringer's desirability function was applied to simultaneously optimize the chosen three responses. Results: The procedure allowed deduction of optimal conditions and the predicted optimum was Acetonitrile: Methanol: 0.1% of Triethylamine (52:05:43, v/v/v), pH of the aqueous phase adjusted at to 3.0 with 10 % ortho phosphoric acid, and the separation was achieved within 8 minutes. The method showed good agreement between the experimental data and predictive value throughout the studied parameter space. Conclusion: The optimized assay condition was validated according to International Conference on Harmonisation (ICH) guidelines to confirm specificity, linearity, accuracy and precision. The proposed validated method was successfully applied for the analysis of commercially available dosage form

DESIGNING OF ANTI-CANCEROUS HISTONE DEACETYLASE INHIBITORS THROUGH MIMICKING OF PROTEIN-PROTEIN INTERFACES

Objective: The objective of the study was to come up with of the small molecular modulators that inhibit protein – protein interfaces or interaction site in HDAC complexes. The main focus is on the mimicking or forming of tiny molecule wherever by inhibiting the protein-protein interactions in specifically HDAC protein complexes.  Methods: By mimicking of the interface of the protein interaction site like SIN3A-SMRT complex as well as SIN3A-NcoR complexes. Results: Totally 10 molecular structures were designed through molecular docking with HDAC2 PDB Id 3MAX and were downloaded from protein data bank. Conclusion: The results clearly indicate that before synthesis and biochemical testing of new lead and its analogs; one can use molecular modeling based methods for qualitative assessment