Synthesis 2021; 53(23): 4433-4439
DOI: 10.1055/a-1550-7659
paper

Total Synthesis of (R)-Argentilactone and (R)-Goniothalamin Using a Free-Radical Photoredox Approach to α,β-Unsaturated δ-Lactones

Francisco J. Fuentes-Pantoja
,
Funding was provided by Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México (DGAPA-UNAM, IN205318) and Consejo Nacional de Ciencia y Tecnología [CONACYT, project no. A1-S-7825; grant no. 576554 (graduate scholarship for F.J.F.-P.].


To the memory of our colleagues Rocío Patiño, Barbarín Arreguín and Gaudencio Anastacio.

Abstract

α,β-Unsaturated δ-lactones are structural motifs found in diverse pharmacologically active natural products. In fact, the unsaturated lactone is often responsible for the biological activity. Herein, we report a new approach for the syntheses of (R)-argentilactone and (R)-goniothalamin based on a photoredox intermolecular iodolactonization mediated by a photoredox process. This new approach, already employed in our research group, stands as a new methodology to achieve several natural products containing α,β-unsaturated δ-lactones.

Supporting Information



Publication History

Received: 18 June 2021

Accepted after revision: 14 July 2021

Accepted Manuscript online:
14 July 2021

Article published online:
11 August 2021

© 2021. Thieme. All rights reserved

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany