Early interest in this class of chemicals came from Joseph-Bienaimé Caventou and Pierre-Joseph Pelletier, who discovered such examples as cinchonine, colchicine, and vetarine. The structures of several of these compounds were determined by Robert Robinson, who won the 1947 Chemistry Nobel for work on them, including determination of the poisoning mechanism of strychnine. Named for their tendency to form salts when acidified, these organic compounds are defined by the presence of amine-type nitrogens. For 10 points, name this class of naturally occurring nitrogen compounds best known for their 
Early interest in this class of chemicals came from Joseph-Bienaimé Caventou and Pierre-Joseph Pelletier, who discovered such examples as cinchonine, colchicine, and vetarine. The structures of several of these compounds were determined by Robert Robinson, who won the 1947 Chemistry Nobel for work on them, including determination of the poisoning mechanism of strychnine. Named for their tendency to form salts when acidified, these organic compounds are defined by the presence of amine-type nitrogens. For 10 points, name this class of naturally occurring nitrogen compounds best known for their pharmacological effects; a class that includes ephedrine, caffeine, nicotine, morphine, and others.
Early interest in this class of chemicals came from Joseph-Bienaimé Caventou and Pierre-Joseph Pelletier, who discovered such examples as cinchonine, colchicine, and vetarine.
{alkaloid}s