Frontiers in Natural Product Chemistry is a book series devoted to publishing monographs that highlight important advances in natural product chemistry. The series covers all aspects of research in the chemistry and biochemistry of naturally occurring compounds, including research on natural substances derived from plants, microbes and animals. Reviews of structure elucidation, biological activity, organic and experimental synthesis of natural products as well as developments of new methods are also included in the series. Volume eight of the series brings seven reviews covering these main themes: marine natural products, neuroprotective natural products, chromenes, coumarin derivatives, and psychedelics. The chapters featured in this volume are: - Chemistry, Antiviral Properties and Clinical Relevance of Marine Macroalgae and Seagrass - Quinolizidine Alkaloids from Marine Organisms: A Perspective On Chemical, Bioactivity and Synthesis - Towards The Use of Whole Natural Products in Psychedelic Research and Therapy: Synergy, Multi-Target Profiles, and Beyond - Neuroprotective Effects of Polyphenols - Neuroprotection with the Functional Herbs from the Lamiaceae Family - Coumarin Derivatives as Potential Anti-Inflammatory Agents for Drug Development - Recent Progress in The Synthesis and Biological Activity of Chromene and Its Derivatives