This work on the progress in the chemistry of organic natural products offers examination on topics such as: the naturally occuring coumarins; variations of ring-attached five-carbon units found in coumarins; and variations of five carbon units attached to carbon and oxygen in coumarins.
Robert D. H. Murray: The Naturally Occurring Coumarins: Scope of the Review.- Progress in the Past Three Years.- Introduction to Tables.- Schemes and Tables: Scheme 1. Variations of Ring-Attached Five-Carbon Units found in Coumarins; Scheme 2. Variations of Five-Carbon Units Attached to Carbon and Oxygen in Coumarins; Table 1. Non-Oxygenated Coumarins; Tables 2-7.Oxygenated Coumarins; Tables 8-16. Dioxygenated Coumarins; Tables 17-28. Trioxygenated Coumarins; Tables 29-34. Tetraoxygenated Coumarins; Table 35. Biscoumarins; Table 36. Triscoumarins; Table 37. Structure Revision Required