1-(1-naphthylsulfonyl)thymine (6) were prepared by the condensation reaction of silylated pyrimidine derivatives with selected sulfonyl chlorides in acetonitrile. Some members of the series showed unexpected crystal properties as a consequence of their conformational chirality in the solid state. Compounds 1 and 5 exhibited chiral crystallization, which was, in the case of 1, accompanied by the formation of racemically
新的N-磺酰基
嘧啶衍
生物1-(对
甲苯磺酰基)尿
嘧啶(1),1-(对
甲苯磺酰基)胸腺
嘧啶(2),5-
溴-1-(对
甲苯磺酰基)尿
嘧啶(3),1-(甲磺酰基)尿
嘧啶(4),1-(1-
萘磺酰基)尿
嘧啶(5)和1-(1-
萘磺酰基)胸腺
嘧啶(6)通过使甲
硅烷基化的
嘧啶衍
生物与选择的
磺酰氯在
乙腈中缩合反应而制备。该系列的某些成员由于处于固态的构象手性而显示出出乎意料的晶体特性。化合物1和5表现出手性结晶,在1的情况下,无论使用何种溶剂,都伴随着消旋孪晶的形成,而5则形成对映体结晶的聚集体。为2,3,和6,在
嘧啶环的C-5位上的取代基通过影响晶体堆积防止手性结晶。的晶体结构的分析1,4,和5,揭示了芳基磺酰基的上发生或不存在的手性结晶的影响。