作者:A. Z. M. Shaifullah Chowdhury、Yasuyuki Shibata、Masatoshi Morita、Kunimitsu Kaya、Kazuhisa Hiratani
DOI:10.1002/jhet.5570380522
日期:2001.9
isothiocyanate, isocyanate or dithioketal reagent furnished pteridines 3,4 in good yield. Thioxo compound 3a was chlorinated, methylated and subsequently displaced by amines. A simple one-step synthesis of heterocondensed pteridines 8–13 by reaction of 2-aminopyrazine with various imino thioacetals was described 8–13.
2-氨基吡嗪1与异硫氰酸酯,异氰酸酯或二硫缩酮试剂的反应以良好的产率提供了蝶啶3,4。硫代氧化合物3a被氯化,甲基化并随后被胺置换。通过2-氨基吡嗪与各种亚氨基硫缩醛的简单合成一步法合成杂缩翼啶8-13已在8-13中进行了描述。