From chemical examinations and infrared absorption spectral measurements for pseudo-dihydrothiamine and newly synthesized homologs, it is assumed that all of these compounds possess the skelton of pyrimido [4, 5-d] thiazolo [3, 4-a] pyrimidine.
通过对假二氢噻胺和新合成的同系物进行
化学检查和红外吸收光谱测量,可以推测所有这些化合物都具有
嘧啶并[4,5-d]
噻唑并[3,4-a]
嘧啶的基团。