The Baylis–Hillman reaction: a strategic tool for the synthesis of higher-carbon sugars

Morita-Baylis-Hillman adducts and their derivatives: a patent-based exploration of diverse biological activities

Morita-Baylis-Hillman adducts are polyfunctionalized compounds that result from a three-component reaction involving an electrophilic sp2 carbon (aldehyde, ketone or imine) and the α-position of an activated alkene, catalyzed by a tertiary amine. These adducts exhibit a wide range of biological activities and act as valuable starting materials for developing drug candidates, pesticides, polymers, and other applications. In this regard, the present review aimed to explore the biological potential of Morita-Baylis-Hillman adducts and their derivatives as documented in patent literature. Additionally, the review delves into the synthetic methodologies employed in their preparation.

First total synthesis of hunanamycin A

The first total synthesis of hunanamycin A, an antibiotic natural product with a pyrido[1,2,3-de]quinoxaline-2,3-dione core from a marine-derived Bacillus hunanensis, is disclosed. The present effort provides access to sufficient amounts of scarce hunanamycin A for further biological evaluation and confirmation of the assigned absolute configuration. In addition, four new analogues of the natural product are reported.