e-4- carboxamides 3 followed by base-catalysed cyclisation. Cyclocondensation of 9-alkyl-3-methylguanines 5a, d, f with MeCOCH2Br gave 3-alkylwyes 6, model compounds of the most probable structure for wyosine from Torulopsis utilis tRNAPhe.
3,9-二烷基
鸟嘌呤5的合成已经通过1-烷基-5-(烷基
氨基)
咪唑-4-羧酰胺3的N-
氰化,然后碱催化的环化来完成。9-烷基-
3-甲基鸟嘌呤5a,d,f与MeCOCH 2 Br的环缩合得到3-烷基wyes 6,这是来自Torulopsis utilis tRNA Phe的Wysine最可能结构的模型化合物。