Nitrogen bridgehead compounds. Part 72 Straightforward synthesis of 1,2,3,4-tetrahydrorutaecarpine and derivatives |
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| Authors: | Istv n Hermecz, gnes Horv th,Benjamin Pod nyi,Lelle Vasv ri-Debreczy,Zolt n M sz ros,Gy rgy Sz sz,J zsef K k si |
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| Affiliation: | István Hermecz,ágnes Horváth,Benjamin Podányi,Lelle Vasvári-Debreczy,Zoltán Mészáros,György Szász,József Kökösi |
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| Abstract: | In polyphosphoric acid, the Fischer indolization of 6-arylhydrazono-1,2,3,4,6,7,8,9-octahydro-11H-pyrido-[2,1-b]quinazolin-11-ones, obtained from 1,2,3,4,6,7,8,9-octahydro-11H-pyrido[2,1-b]quinazolin-11-ones by three pathways, afforded substituted 1,2,3,4,7,8-hexahydro-5H-13H-indolo[2′,3′:3,4]pyrido[2,1-b]quinazolin-5-ones in high yields. The structures of the 6-substituted octahydropyridoquinazolinones and hexahydroindo-lopyridoquinazolinones were characterized by uv, 1H and 13C nmr data. |
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