Synthesis of (−)-Epicatechin 3-(3-<i>O</i>-Methylgallate) and (+)-Catechin 3-(3-<i>O</i>-Methylgallate), and Their Anti-Inflammatory Activity
作者:Takashi Iijima、Yoshihiro Mohri、Yasunao Hattori、Atsushi Kashima、Tsunashi Kamo、Mitsuru Hirota、Hiromasa Kiyota、Hidefumi Makabe
DOI:10.1002/cbdv.200800224
日期:2009.4
A concise synthesis of (-)-epicatechin 3-(3-O-methylgallate) (1; ECG3''Me), which is a minor constituent of tea, and (+)-catechin 3-(3-O-methylgallate) (2; CG3''Me) via condensation of equimolar amount of catechin and gallate derivatives has been achieved. The anti-inflammatory effect of the synthetic compounds on 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced inflammation of mouse ears was examined
(-)-表儿茶素 3-(3-O-methylgallate) (1; ECG3''Me) 和 (+)-catechin 3-(3-O-methylgallate) 的简明合成(2; CG3''Me) 通过等摩尔量的儿茶素和没食子酸酯衍生物的缩合已经实现。检查了合成化合物对 12-O-十四烷酰佛波醇-13-乙酸酯 (TPA) 诱导的小鼠耳朵炎症的抗炎作用。化合物 1 和 2 在 200 微克的剂量下分别将 TPA 诱导的小鼠耳朵炎症抑制了 50% 和 43%。它们的活性比通常使用的抗炎剂吲哚美辛和甘草次酸强。