摘要:
We report the first total synthesis of 3,5-O-dicaffeoylquinic acid and its derivatives, 3,5-O-diferuloylquinic acid and 3,5-(3,4-dimethoxycinnamyl)quinic acid, in a nine-step sequence. The key step involves Knoevenagel condensations between vanillin. 3,4-dimethoxybenzaldehyde or 4-hydroxy-3-methoxy-benzaldehyde and the dimalonate ester of quinic acid. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.