Synthesis and Structural Characterization of Amino-Based Pyranoanthocyanins with Extended Electronic Delocalization

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Joana Oliveira (Author) FCUP; Araujo, P (Author) Other; Fernandes, A (Author) Other; Nuno Mateus (Author) FCUP; Victor de Freitas (Author) FCUP

Journal

Title: Synlett

Vol. 27

Pages: 2459-2462

ISSN: 0936-5214

Publisher: Thieme

Indexing

ISI Web of Knowledge - 13 Citations

Scopus - 14 Citations

Other information

Authenticus ID: P-00M-7AV

DOI: 10.1055/s-0035-1562471

Abstract (EN): Two new pyranoanthocyanin amino derivatives with extended electronic delocalization were obtained from the reaction of methylpyranomalvidin-3-O-glucoside with two amino-derived cinnamaldehydes, 4-(dimethylamino)- and 4-(diethylamino)-cinnamaldehyde. Structural characterization revealed the presence of a butadienylidene linkage connecting the pyranoanthocyanin and the cinnamyl moieties. The unexpected red color presented by the new molecules is due to the presence of a dicationic form of the pigments at acidic pH as confirmed by ESI-MS.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4