400889-57-8Relevant academic research and scientific papers
Tautomerism and stereodynamics of indophenols, amidines, and their derivatives and analogs: XVI. Synthesis of tetrahydroquinoxalines having spiro-fused oxoindole and cyclohepta[c]furan fragments
Kurbatov,Kuznetsov,Simakov,Voronina,Zhdanov,Olekhnovich
, p. 731 - 737 (2004)
Alkylation of o-(N-sulfonylamino)phenylimino derivatives of indol-2-one and cyclohepta[c]furan with phenacyl bromides is accompanied by cyclization to previously unknown tetrahydroquinoxalines having spiro-fused oxoindole and cyclohepta[c]furan fragments. The structure of the latter includes a nitrogen-oxygen triangular system typical of most natural cytotoxic compounds.
