作者:Natalia Yu. Tretyakova、Yu-pang Lin、Patricia B. Upton、Ramiah Sangaiah、James A. Swenberg
DOI:10.1016/0300-483x(96)03429-4
日期:1996.10
spectrometry and nuclear magnetic resonance spectroscopy. The adducts were prepared by reacting purine nucleobases or nucleosides with epoxybutene (EB) or diepoxybutane (DEB) followed by HPLC separation. The reaction of guanine (Gua) with EB resulted in two isomeric products, N7-(2-hydroxy-3-buten-1-yl)guanine (EB-Gua I) and N7-(1-hydroxy-3-buten-2-yl)guanine (EB-Gua II). The reaction of adenine at N3
丁二烯(BD)是一种重要的工业化学品,被归类为可能的人类致癌物。观察到对BD致癌作用的敏感性存在明显的物种差异,这可能是由于其代谢差异造成的。在这项工作中,由BD的反应性代谢产物形成的鸟嘌呤和腺嘌呤加合物被分离出来,并通过紫外光谱,液体二次离子质谱和串联质谱,电喷雾质谱和核磁共振谱进行结构表征。通过使嘌呤核苷碱基或核苷与环氧丁烯(EB)或二环氧丁烷(DEB)反应,然后进行HPLC分离来制备加合物。鸟嘌呤(Gua)与EB的反应产生了两种异构产物,N7-(2-羟基-3-丁烯-1-基)鸟嘌呤(EB-Gua I)和N7-(1-羟基-3-丁烯-2-基)鸟嘌呤(EB-Gua II)。腺嘌呤在N3处的反应导致形成N3-(2-羟基-3-丁烯-1-基)腺嘌呤(EB-Ade I)和N3-(1-羟基-3-丁烯-2-基)( EB-Ade II)。DEB的主要鸟嘌呤加合物被鉴定为N7-(2',3',4'-三羟丁基)