Synthesis of Pyrimidines and Triazines in Ice: Implications for the Prebiotic Chemistry of Nucleobases
作者:César Menor-Salván、Dra. Marta Ruiz-Bermejo、Marcelo I. Guzmán、Susana Osuna-Esteban、Sabino Veintemillas-Verdaguer
DOI:10.1002/chem.200802656
日期:2009.4.20
nucleobases: Freeze–thaw cycles in urea (1) solutions under methane/nitrogen atmospheres lead, with application of an energy source, to the synthesis of pyrimidines (mainly cytosine (2) and uracil (3)), triazines (such as cyanuric acid (4)), and adenine. This synthesis appears to be dependent on the atmosphere and the freezing conditions. At room temperature, hydantoin (5) is obtained. However, a freezing
从尿素到核碱基:在甲烷/氮气气氛下,尿素(1)溶液中的冻融循环导致在施加能源的情况下合成嘧啶(主要是胞嘧啶(2)和尿嘧啶(3)),三嗪(如如氰尿酸(4))和腺嘌呤。该合成似乎取决于大气和冻结条件。在室温下,得到乙内酰脲(5)。但是,在惰性气氛下经受能量源作用的冷冻尿素/水系统会生成s-三嗪。