升振山姜茎的黄酮类成分

Flavonoids from the Stems of Alpinia hainanensis ‘Shengzhen’

摘要:

为了解升振山姜（Alpinia hainanensis’Shengzhen‘）的化学成分，采用柱色谱技术从其茎中分离得到10个黄酮类化合物。经波谱分析，分别鉴定为（-）-乔松素（1）、（±）-山姜素（2）、（±）-7，4'-二羟基-5-甲氧基二氢黄酮（3）、4'，6'-二羟基-2'-甲氧基二氢查尔酮（4）、小豆蔻明（5）、蜡菊亭（6）、（+）-儿茶素（7）、（-）-表儿茶素（8）、原花青素A1（9）、原花青素A6（10）。体外活性测试表明，化合物1、3、5、7~10具有显著的ABTS自由基清除活性，化合物7~10具有显著的DPPH自由基清除活性。

Abstract:

To understand the chemical constituents of Alpinia hainanensis ‘Shengzhen’, ten flavonoids were isolated from its stems by chromatographic techniques. On the basis of spectral data, they were identified as (-)-pinocembrin (1), (±)-alpinetin (2), (±)-7,4'-dihydroxy-5-methoxy-dihydroflavonol (3), uvangoletin (4), cardamonin (5), helichrysetin (6), (+)-catechin (7), (-)-epicatechin (8), proanthocyanidin A1 (9), and proanthocyanidin A6 (10). The compounds 1, 3, 5, 7-10 exhibited remarkable ABTS radical scavenging activities and compounds 7-10 displayed significant DPPH radical scavenging activities.