Synthesis and Characterization of Adducts Formed in the Reactions of Safrole 2′,3′-Oxide with 2′-Deoxyadenosine, Adenine, and Calf Thymus DNA
作者:Li-Ching Shen、Su-Yin Chiang、I-Ting Ho、Kuen-Yuh Wu、Wen-Sheng Chung
DOI:10.1002/ejoc.201101384
日期:2012.2
Safrole (1) is a natural product found in herbs and spices. Upon uptake, it can be metabolized to safrole 2′,3′-oxide [(±)-SFO, 2], which can react with DNA bases to form DNA adducts. The reactions of 2 with 2′-deoxyadenosine (3) and adenine (8) under physiological conditions (pH 7.4, 37 °C) were carried out to characterize its possible adducts with adenine. Four adducts were isolated by reverse-phase
黄樟素 (1) 是一种存在于草药和香料中的天然产品。吸收后,它可以代谢为黄樟素 2',3'-氧化物 [(±)-SFO, 2],它可以与 DNA 碱基反应形成 DNA 加合物。2 与 2'-脱氧腺苷 (3) 和腺嘌呤 (8) 在生理条件 (pH 7.4, 37 °C) 下进行反应以表征其可能与腺嘌呤的加合物。通过反相液相色谱分离出四种加合物,并通过紫外/可见光、1H 和 13C NMR 光谱和 MS 表征了它们的结构。2 与 3 的反应产生了两种区域异构体,N1γ-SFO-dAdo (4) 和 N6γ-SFO-dAdo (5),产率 4.2–4.5%,而 2 与 8 的反应产生了 N3γ-SFO-Ade (9 ) 和 N9γ-SFO-Ade (10),产率为 1.0–2.4%。使用 HPLC-ESI-MS/MS,我们追踪了小牛胸腺 DNA (10 mg) 用 2 (60 μmol) 处理时形成的四种加合物的数量,4、5