Advances in Heterocyclic Chemistry, Volume 127, the latest release in this definitive series in the field highlights the areas where biology and organic chemistry increasingly intersect. This updated volume includes chapters on The Pictet-Spengler Reaction (1990-2017): A Powerful Strategy for the Synthesis of Heterocycles, Organometallic Complexes of Polyazines, Recent Developments in the Chemistry of Boron- dipyrromethene (BODIPY) Fluorescent Dyes and their Aza analogues, Reactions of 3-Pyrrolin-2-ones, Arsole, Stibole, Bismole, and fused systems , The Chemistry of Dihydrothienopyrrolones, the Application of the Baylis-Hillman Reaction in Heterocyclic Chemistry, and 5-Endo Cyclisation, amongst other topics.