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Structure elucidation and NMR assignments of two new pyrrolidinyl quinoline alkaloids from chestnut honey
Author(s) -
Beretta Giangiacomo,
Vistoli Giulio,
Caneva Enrico,
Anselmi Cecila,
Maffei Facino Roberto
Publication year - 2009
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.2407
Subject(s) - chemistry , kynurenic acid , quinoline , carbon 13 nmr , stereochemistry , derivative (finance) , nuclear magnetic resonance spectroscopy , organic chemistry , tryptophan , amino acid , biochemistry , financial economics , economics
The complete 1 H, 13 C and 15 N NMR spectral assignments of two new alkaloids isolated from chestnut honey and structurally related to kynurenic acid have been made using 1‐D and 2‐D NMR techniques, including COSY, HMQC and HMBC experiments. The new compounds have been identified as 3‐(2′‐pyrrolidinyl)‐kynurenic acid and its γ‐lactam derivative. Copyright © 2009 John Wiley & Sons, Ltd.