Spirotetronates are actinomyces-derived polyketides that possess complex structures and exhibit potent and unexplored bioactivities. Due to their anticancer and antimicrobial properties, they have potential as drug hits and deserve further study. In particular, abyssomicin C and tetrocarcin A have shown significant promise against antibiotic-resistant S. aureus and tuberculosis, as well as for the treatment of various lymphomas and solid tumors. Improved synthetic routes to these compounds, particularly the class II spirotetronates, are needed to access sufficient quantities for structure optimization and clinical applications.
Keywords: Bcl-2 inhibitor; Diels-Alder; Diels-Alderase; UPR apoptosis; antibiotic; anticancer; biosynthesis; drug resistance; natural product; pABA inhibitor; spirotetronate; total synthesis.