A New Norditerpenoid Alkaloid Acsonine from the Roots of Aconitum kusnezoffii Reichb.-[isolation and structure determination]. -(ZINUROVA, E. G.; KHAKIMOVA, T. V.; SPIRIKHIN, L. V.; YUNUSOV, M. S.; GOROVOI, P. G.; TOLSTIKOV, G. A.; Russ.
Pyridine derivatives with bridges
Pyridine derivatives with bridges R 0460Synthesis and Stereochemistry of Some 3-Azabicyclo[3.3.1]nonane Derivatives.-Michael addition of various α,β-unsaturated carbonyl compounds to oxopiperidinecarboxylate (I) provides access to the title azabicyclononane derivatives as diastereomeric mixtures. The structure of adducts is studied in detail using NMR techniques.-(VAFINA, G. F.; YAKHINA, G. R.; KHAKIMOVA, T. V.; SPIRIKHIN, L. V.; GALIN, F. Z.; YUNUSOV, M. S.; Russ.
2001 ring closure reactions ring closure reactions O 0130
-047Synthesis and Properties of 2,4-Bis(ethoxycarbonyl)-and 2,4-Diacetyl-3-hetaryl-5-hydroxy-5-methylcyclohexanones.-Michael addition of acetoacetate or acetylacetone to heterocyclic aldehydes (I) affords the substituted title cyclohexanones (III) as mixture with the corresponding enols. Reaction of these addition products with hydrazines provides stereoselective access to substituted tetrahydroindazoles [cf. (IV), (V)]. -(VAFINA, G. F.; GALIN, F. Z.; KHAKIMOVA, T. V.; SPIRIKHIN, L. V.; DOKICHEV, V. A.; YUNUSOV, M. S.; Russ.
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