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C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
C07D471/12—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains three hetero rings
C07D471/20—Spiro-condensed systems
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Chemical & Material Sciences
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Organic Chemistry
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Nitrogen Condensed Heterocyclic Rings
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Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
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HU74OI00000181A1973-06-221974-06-21Process for preparing vincadifformin and derivatives thereof
HU171150B
(en)