1. Introduction to the different classes of natural products;Springob,2009
2. Solanaceae and Convolvulaceae: Secondary Metabolites;Eich,2008
3. See: www.drugs.com and www.rsc.org/merck-index.
4. Progress toward the development of noscapine and derivatives as anticancer agents;DeBono;J Med Chem,2015
5. Medicinal Natural Products;Dewick,2002