Eight phenolic compounds (castalin, castalagin, vescalagin, kurigalin, 5-O-galloylhamamelose, (3', 5'-dimethoxy-4'-hydroxyphenol)-1-O-beta-D-(6-O-galloyl)glucose, chestanin, and acutissimin A) were isolated from chestnut bark and their structures elucidated on the basis of spectroscopic analyses. Evidence for strong intermolecular associations of 5-O-galloylhamamelose is presented on the basis of NMR and mass spectroscopic data.
biosynthesis, taxonomy, Scrophulariaceae, iridoid glucosides, Penstemon secundiflorus, 10-hydroxy-(5 alpha H)-6-epidihydrocornin
Publication DOI: 10.1016/S0031-9422(98)00114-9Journal NLM ID: 0151434Publisher: Elsevier
Institutions: Département de Chimie, URA 0568, Ecole Normale Supérieure, Paris, France, Laboratoire de Chimie Biologique (INRA), Centre de Biotechnologie Agro-Industrielle, Institut National Agronomique Paris-Grignon, Thiverval-Grignon, France, Institut de Chimie des Substances Naturelles, Gif-sur-Yvette, France
Methods: 13C NMR, 1H NMR, methylation, GC-MS, ESI-MS, MS/MS, HPLC, extraction, CID-MS, CC, enzymatic treatment, NOESY, INAPT
Found