1,8-二羟基蒽醌-β-D-葡萄糖甙水溶液的辐射化学  

Studies on the Radiation Chemistry of the Aqueous Solution of 1,8-Dihydroxy-Anthraquinone-β-D-Glucoside

作　　者：孙海 袁荣尧[1] 吴季兰[1] Sun Hai;Yuan Rongyao;Wu Jilan(Technical Physics Department,Peking University,Beijing)

机构地区：[1]北京大学技术物理系

出　　处：《高等学校化学学报》1987年第9期845-850,共6页Chemical Journal of Chinese Universities

摘　　要：本文研究了γ射线照射下1,8-二羟基蒽醌-β-D-葡萄糖甙水溶液中羟基自由基(OH·)对糖甙的作用。用样品中饱和不同气体或加入不同自由基俘获剂的方法,证明OH·作用于糖甙的糖基使溶液的H2O2G值升高;作用于甙元则是加成反应,G值为0.4.求得OH·与糖甙的反应速率常数k_(OH·)+糖甙=2.9×10^(9)mol^(-1)s^(-1)。In this paper the radiolysis of the aqueous solution of 1, 8-dihydroxy anthra-quinone glucoside has been investigated, the results are as follows.1.OH· radical reacted with 1,8-dihydroxy anthraquinone-β-D-glucocide leading to the radiolysis of glucoside but no glucosidic bond rupture was found.2.Two radiolysis products have been obtained. Product may be an aliphatic alcohol which comes from the decomposition of glucose radical. Product Ⅱ is still a glucoside which may be a trihydroxy anthraquinone glucoside.3.Using competition kinetics we have got k_((OH.+glucosidc))=0 2.9×10^(9)mol^(-1)s^(-1).

关 键 词：辐射化学 Γ射线照射 反应速率常数 羟基自由基 糖甙 G值 加成反应 

分 类 号：R28[医药卫生—中药学]