Hence , a synthesis of quinotoxine ( which Woodward actually synthesized ) would establish a route to synthesizing quinine .
Woodward 's particular insight in this synthesis was to realise that the German chemist Paul Rabe had converted a precursor of quinine called quinotoxine to quinine in 1905 .
A synthesis of quinotoxine ( which Woodward actually synthesized ) would establish a route to synthesizing quinine .
Woodward 's particular insight in this synthesis was to realise that the German chemist Paul Rabe had converted a precursor of quinine called quinotoxine to quinine in 1905 .