Synthesis and physical studies of azamitosene and iminoazamitosene reductive alkylating agents. Iminoquinone hydrolytic stability, syn/anti isomerization, and electrochemistry
摘要:
DOI:
10.1021/jo00297a040
作为产物:
描述:
alkaline earth salt of/the/ methylsulfuric acid 在
palladium on activated charcoal 氢气 作用下,
以
甲醇 为溶剂,
以79%的产率得到6-acetamido-5-amino-8-hydroxy-7-methyl-2,3-dihydro-1H-pyrrolo<1,2-a>benzimidazole
参考文献:
名称:
Synthesis and physical studies of azamitosene and iminoazamitosene reductive alkylating agents. Iminoquinone hydrolytic stability, syn/anti isomerization, and electrochemistry
Synthesis and elucidation of azamitosene and iminoazamitosene
申请人:Arizona Board of Regents
公开号:US05015742A1
公开(公告)日:1991-05-14
The synthesis of 2,3-dihydro-1H-pyrrolo[1,2-a]benzimidazole-5,8-diones (azamitosenes was carried out in conjunction with the design of potential DNA crosslinkers activated by reduction (reductive alkylation). These quinones resemble mitosene antitumor agents, but are based on the benzimidazole nucleus rather than the indole nucleus. Preliminary results indicate the azamitosenes are potent antitumor agents. Iminoquinone derivatives of azamitosenes (iminoazamitosenes) were synthesized as reductive alkylating agents exhibiting low oxygen toxicity. The iminoazamitosenes are hydrolytically stable in neutral buffers and undergo buffer catalyzed syn/anti isomerization at the imino center. Electrochemical and oxygen reactivity studies in aqueous buffers indicate the change from quinone to iminoquinone is accompanied by an increase in reduction potential and a decrease in oxygen reactivity of the corresponding reduced species.