作者:D. M. Brown、M. J. E. Hewlins
DOI:10.1039/j39680002050
日期:——
the corresponding 2-cyanoethylurea and by amination of 4-thio-5,6-dihydrouracils. U.v. and i.r. spectra and pKa values of dihydrocytosine and its 1-methyl, 1-cyclohexyl, 1,3-dimethyl, and 1,N(4)-trimethyl derivatives are recorded. 1-Alkyl dihydrocytosines and the parent compound exist in the amino-form (KT 25) in water and predominantly in the imino-form in chloroform. The kinetics and mechanism of
与化学诱导突变的研究有关,通过5,6-二氢胞嘧啶的磺酰胺合成,通过相应的2-氰基乙基脲的闭环反应和4-硫代5,6-二氢尿嘧啶的胺化反应合成了许多5,6-二氢胞嘧啶。记录了二氢胞嘧啶及其1-甲基,1-环己基,1,3-二甲基和1,N(4)-三甲基衍生物的Uv和ir光谱以及p K a值。1-烷基二氢胞嘧啶和母体化合物在水中以氨基形式(K T 25)存在,在氯仿中主要以亚氨基形式存在。讨论了其快速水解为二氢尿嘧啶的动力学和机理。