Abstract A series of flavan-3-ols and procyanidins, possessing a carboxymethyl group, and a procyanidin tetramer have been isolated from the fern, Davallia divaricata . The structures were characterized on the basis of chemical and spectral evidence.
                                    摘要 从蕨类植物Davallia divaricata 中分离得到一系列具有羧甲基的黄烷醇和
原花青素以及
原花青素四聚体。基于
化学和光谱证据表征结构。