The synthesis of the title compounds 5H,11H- pyrido[2',3':2,3]thiopyrano[4,3-b]indoles was accomplished by the Fischer indole cyclization of some 2,3-dihydrothiopyrano[2,3-b]pyridin-4(4H)-one phenylhydrazones and 7-methyl-2,3-dihydrothiopyrano[2,3-b]pyridin-4(4H)-one phenylhydrazones. The synthesis of the new 2,3-dihydrothiopyrano[2,3- b]pyridin-4(4H)-one, which was used as one of the starting compounds, is also described.
SYNTHESIS OF NOVEL 5H,11H-PYRIDO[2',3':2,3]THIOPIRANO[4,3-B]-INDOLES BY FISCHER-INDOLE CYCLIZATION.
MARINI, ANNA MARIA;DA SETTIMO PASSETTI, FEDERICO;SALERNO, SILVIA;LA MOTTA, CONCETTINA;
2000-01-01
Abstract
The synthesis of the title compounds 5H,11H- pyrido[2',3':2,3]thiopyrano[4,3-b]indoles was accomplished by the Fischer indole cyclization of some 2,3-dihydrothiopyrano[2,3-b]pyridin-4(4H)-one phenylhydrazones and 7-methyl-2,3-dihydrothiopyrano[2,3-b]pyridin-4(4H)-one phenylhydrazones. The synthesis of the new 2,3-dihydrothiopyrano[2,3- b]pyridin-4(4H)-one, which was used as one of the starting compounds, is also described.File in questo prodotto:
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