The reagent used in von Braun method is

Heterocyclic rings are opened with the elimination of nitrogen and the nature of carbon skeleton is obtained by

Anti malarial drug is

Quinine on oxidation with chromic acid gives quininic acid and -------------

Morphine on acetylation gives

Lysergic acid on reduction with sodium and amyl alcohol gives

When treated with HI at its boiling point, reserpine gives ------ molecules of methyl iodide

Dehydrogenation of methyl reserpate with Se gives

On submitting tylophorine to Hofmann degradation ---------- is obtained