没食子酸乙酯是油脂的抗氧化剂、食品添加剂及某些药品的中间体，还可作为医药中间体用于含量测定、鉴定及药理实验等；研究表明其对口腔鳞癌、肺癌、结肠癌等多种肿瘤细胞有生长抑制作用，尤其对结肠癌细胞LOVO增殖抑制最强，且通过线粒体途径诱导细胞凋亡，抑制乳腺癌侵袭转移等抗肿瘤作用。
医药; 食品添加剂; 油脂抗氧化剂
合成路线1：
- 原料：100g没食子酸、150g乙醇、35g溴化改性磺酸树脂（参照例2制备）
- 步骤：称量原料加入反应器，加热至80℃反应5小时；过滤分离滤液与树脂；蒸馏滤液除去过量乙醇得粗产物；去离子水重结晶后脱水干燥
- 条件：80℃，5小时
- 收率：98%，纯度99.9%
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