Strategies and Methods for a Sustainable Search for Bioactive Compounds; Discovery of Potential Anticancer Agents from Aquatic Cyanobacteria, Filamentous Fungi, and Tropical Plants; Metabolic Engineering of Natural Product Biosynthesis; Computational Approaches for the Discovery of Natural Lead Structures; Recent Advances in the Application of Electronic Circular Dichroism for Studies of Bioactive Natural Products; Natural Products as Treatments for and Leads to Active Compounds in Viral Diseases; Natural Products as Inhibitors of Hypoxia-Inducible Factor-1 (HIF-1); From Antitumor or Wound Healing Actions of Natural Products through Angiogenesis; From Natural Polyphenols to Synthetic Antitumor Agents; Resveratrol against Major Pathologies: From Diet Prevention to Possible Alternative Chemotherapies with New Structural Analogues; Drug Discovery from Natural Substances—A Case Study: Camptothecins; Plant Compounds and Derivatives as Inhibitors of Cancer Cell Multidrug Resistance; Recent Advances in the Search of　 Novel Calmodulin Inhibitors from Selected Mexican Plants and Fungi; Neuroprotective Effects of Natural Products from Traditional Chinese Herbs; Drugs for the Neglected Disease Malaria based on Natural Products; Endophytic Microorganisms as a Source of Bioactive Compounds; Biologically Active Natural Products from Australian Marine Organisms