Reaction of 5-substituted-2-amino-2-oxazolines with ethoxycarbonyl isocyanate. A route to 2,3,6,7-tetrahydro-4<i>H</i>-oxazolo[3,2-<i>a</i>]-1,3,5-triazine-2,4-diones
作者:Ouro Adetchessi、Daniel Desor、Isabelle Forfar、Christian Jarry、Jean Michel Leger、Michel Laguerre、Alain Carpy
DOI:10.1002/jhet.5570340211
日期:1997.3
The reaction of 2-amino-2-oxazolines with ethoxycarbonyl isocyanate was investigated in order to access to fused 1,3,5-triazine-2,4-diones with a potential 5-HT2 antagonist activity. The reaction leads to 2,3,6,7-tetrahydro-4H-oxazolo[3,2-a]-1,3,5-triazine-2,4-diones and to 1-carbethoxy-3-(2-iminooxazolidine)ureas. During the carbamoylation the regioselectivity seems to be related to the strong nucleophilic
为了获得具有潜在的5-HT 2拮抗剂活性的稠合的1,3,5-三嗪-2,4-二酮,研究了2-氨基-2-恶唑啉与乙氧基羰基异氰酸酯的反应。该反应导致2,3,6,7-四氢-4 H-恶唑并[3,2 - a ] -1,3,5-三嗪-2,4-二酮和1-甲乙氧基-3-(2-亚氨基恶唑烷)脲。在氨基甲酰基化期间,区域选择性似乎与2-氨基-2-恶唑啉的内氮原子的强亲核特性有关。通过X射线晶体学研究了两种化合物的结构。通过将2,3,6,7-四氢-7-苯氧基甲基-4 H-恶唑并[3,2 - a ] -1,3,5-三嗪-2,4-二酮烷基化制备N-取代的化合物。