作者:J. Bryant Neilsen、H. Smith Broadbent、William J. Hennen
DOI:10.1002/jhet.5570240624
日期:1987.11
reported synthesis of these compounds by unequivocal methods. In the process of so doing four new pyrazines, ethyl 3-amino-5-chloro-6-methyl-2-pyrazinecarboxylate (11), N,N-dimethyl-N'-(6-chloro-3-cyano-5-phenylpyrazin-2-yl)methanimidamide (16), 2-amino-3-ethoxycarbonyl-5-phenylpyrazine 1-oxide (19), and ethyl 3-amino-5-chloro-6-phenyl-2-pyrazinecarboxylate (20) were synthesized. Four new pteridines, 7-methoxy-6-methyl-2
尽管以前已经合成了6-甲基-(1)和6-苯基异黄酮(2),但是对免疫学测试所必需的高纯度的要求使我们必须首先开发通过明确方法合成这些化合物的方法。在这样做的过程中,有四个新的吡嗪,3-氨基-5-氯-6-甲基-2-吡嗪羧酸乙酯(11),N,N-二甲基-N '-(6-氯-3-氰基-5-苯基吡嗪-2-基)甲氨基酰胺(16),2-氨基-3-乙氧基羰基-5-苯基吡嗪一氧化物(19)和3-氨基-5-氯-6-苯基-2-吡嗪甲酸乙酯(20))合成。四个新的蝶啶,7-甲氧基-6-甲基-2,4-哌啶二胺(7),7-甲氧基-6-苯基-2,4-哌啶二胺(17),2-氨基-7-乙氧基-6-甲基- 4(3 H)-蝶啶酮(12)和2-氨基-7-乙氧基-6-苯基-4(3H)-蝶啶酮(21)也已在合成这些异黄蝶呤的途中合成。