作者:Hiroyuki Nishida、Motozumi Ando、Kazuo Itoh、Koji Ueda、Yujiro Nishida、Yoshinori Okamoto、Chitose Toda、Nakao Kojima
DOI:10.1248/cpb.58.957
日期:——
Selenite (H(2)SeO(3)) reacts with thiol compounds (RSH) under acidic conditions to form selenotrisulfides (RSSeSR, i.e. monoselenodithiols). The stoichiometry of the reaction is proposed as 4RSH+H(2)SeO(3)-->RSSeSR+RSSR+3H(2)O. Surprisingly, we found novel polynuclear selenium-containing compounds, i.e. polyselenodipenicillamines (PenSSe(2-4)SPen), in the reaction of D-penicillamine (PenSH) with H(2)SeO(3)
亚硒酸盐(H(2)SeO(3))在酸性条件下与硫醇化合物(RSH)反应形成硒代壬二硫醚(RSSeSR,即单硒二硫醇)。建议该反应的化学计量为4RSH + H(2)SeO(3)-> RSSeSR + RSSR + 3H(2)O。出人意料的是,我们在D-青霉胺(PenSH)与H(2)SeO(3)的反应中发现了新型的多核含硒化合物,即聚硒二苯并二胺(PenSSe(2-4)SPen)。通过(1)H-NMR和LC-MS / MS分析确定了PenSSe(2-4)SPen的硒中心特征,表明该化合物的硒同位素丰度模式与理论计算值相符。 。为了更好地了解PenSSe(2-4)SPen生产的机理,将各种摩尔比的H(2)SeO(3)(PenSH的1/8至4倍)与PenSH反应,从PenSSe(1-2)SPen的二甲基质子信号的积分值与乙酸(内标)的甲基质子信号进行比较,计算出产物的浓度。随着H(2)SeO(3)