An important aspect of drug designing is to understand the principal component in the natural product that is having the therapeutic benefit.The important role that medicinal chemistry plays is in developing a drug with therapeutic benefits. The process of traditionally modifying a chemical molecule which has therapeutic value, to intervene a disease is done by Medicinal chemistry. Identification of a chemical molecule of potential, altering its chemical structure, synthesizing the organic molecule in the laboratory, and testing of its properties and biological activities are all included in the process. The market of pharmaceutical industry is driven by Medicinal chemistry. At present, the primary aim of drug designing is to design a drug for a known target and develop a molecule by completely understanding the active principle with therapeutic potential, which is then approved by the Food and Drug Administration (FDA). This process of designing a new molecule to the established target is done using Computer Assisted Drug Designing (CADD).