Synthesis
DOI: 10.1055/s-0043-1775427
short review

Synthetic Approaches toward the Batzelladine Class of Guanidinium Alkaloids

Jamie L. Breunig
,
We are grateful to the National Institute of General Medical Sciences (NIGMS) (National Institutes of Health (R35GM139583) for the generous support of our natural product synthesis and chemical biology program and to North Carolina State University for funding support of our program.


Abstract

Polycyclic guanidinium alkaloids (PGAs) are a class of nitrogen-containing marine natural products characterized by a vessel unit, a linker, and an anchor unit. Batzelladines, a specific subclass of PGAs, exhibit diverse biological activities and structural complexities. This short review discusses various synthetic methods developed to access batzelladine natural products, highlighting the key disconnections utilized in each synthetic strategy.

1 Introduction

2 Polycyclic Guanidinium Alkaloids

3 Batzelladine Natural Products

4 Strategies in Batzelladine Synthesis

4.1 Aza-Michael Addition

4.2 Biginelli Condensation

4.3 1,3-Dipolar Cycloaddition

4.4 [4+2] Annulation of N-Alkyl Imines and Vinyl Carbodiimides

4.5 Free-Radical Cyclization

4.6 Palladium-Catalyzed Carboamination

4.7 Rhodium-Catalyzed [4+3] Cycloaddition

4.8 A Bicyclic β-Lactam Intermediate

5 Non-Total Synthesis Contributions

6 Conclusion



Publikationsverlauf

Eingereicht: 18. Oktober 2024

Angenommen nach Revision: 28. November 2024

Artikel online veröffentlicht:
07. Januar 2025

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