Formation of a tetracyclic structure between cytosine derivatives and a model metabolite of the carcinogen 4-nitroquinoline N-oxide
摘要:
Cytosine derivatives 6a-e react with the model metabolite 3 of the carcinogen 4-nitroquinoline N-oxide to give tetracyclic structures 5a-e. The arabinosyl derivative 5d undergoes spontaneous rearrangement to the isomeric structure 7.