The eight structures of caffeic acid: a jet-cooled laser ablated rotational study. Issue 1 (21st December 2022)

• Record Type: Journal Article
• Authors: Juárez, G.; Sanz-Novo, M.; Aguado, R.; Alonso, J. L.; León, I.; Alonso, E. R.
• Is Part Of: RSC advances. Volume 13:Issue 1(2023)
• Page Start: 212
• Page End: 219
• Publication Date: 2022-12-21
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra07124j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : This work reports a complete conformational analysis of caffeic acid, an exceptionally versatile pharmacophore, using laser ablation chirped-pulse Fourier transform microwave spectroscopy. Abstract : This work reports a complete conformational analysis of caffeic acid, an exceptionally versatile pharmacophore, using laser ablation chirped-pulse Fourier transform microwave spectroscopy. The whole conformational space consisting of eight distinct species has been fully deciphered based on the trend of the rotational constants supported by theoretical computations. We show how rotational spectroscopy can be confidently used to distinguish between conformers even when the structural differences are minimal, such as those involved in the conformational panorama of caffeic acid. Additionally, the structural information here provided, such as the planarity observed in all the conformers, could help to elucidate the mechanisms underlying the biological and pharmacological activity of hydroxycinnamic acids.