Medicinal plants are currently of considerable importance because they can be used for therapeutic purposes in many medical systems and are increasingly becoming a substitute for synthetic drugs in modern society. Medicinal plants possess therapeutic activities in many areas, such as anti-bacterial, anti-oxidation, anti-microbial, anti-inflammatory, anti-cancer, and other activities. Therefore, extracts from medicinal plants offer unlimited opportunities for new drugs because of the availability and chemical diversity of biological active principles from the plants.
Figure 1. Ellagic acid is a natural polyphenol antioxidant found in plants.
Figure 2. The structure of paclitaxel.