作者:Ming Xu、Andrea Vasella
DOI:10.1002/hlca.200690111
日期:2006.6
A new synthesis of pteridines possessing a (substituted) (Z)-3-hydroxyprop-1-enyl group at C(6) is based on the acylation of 4-amino-5-nitrosopyrimidines with dienoic acid chlorides, followed by a high-yielding intramolecular hetero-Diels–Alder cycloaddition and cleavage of the NO bond leading to 4. Thermolysis of the resulting pteridines 4 possessing a benzyloxy group at C(4) led to the products 5
一种在C(6)上具有(取代)(Z)-3-羟基丙-1-烯基的蝶啶的新合成方法是基于4-氨基-5-亚硝基嘧啶与二烯二酰氯的酰化作用,然后再进行高产生分子内杂Diels-Alder环加成反应,并切断NO键,导致4。在C(4)处具有苄氧基的所得蝶啶4的热解导致产物5,其是由3-羟基丙-1-烯基异构化为3-氧丙基侧链而类似的蝶啶8具有NH 2引起的。 C(4)组保持不受影响。