Sodium amide will also deprotonate indole and piperidine. Typical simple aromatic compounds are benzene, indole, and pyridine. Dimethyltryptamine is an indole alkaloid derived from the shikimate pathway. Batcho indole synthesis is an efficient method of synthesizing indole and substituted indoles. Skatole can be synthesized via the Fischer indole synthesis. Ring opening in the indole heterocyclic ring could generate new amine and keto functions. The various components of curare are organic compounds classified as either isoquinoline or indole alkaloids. More than 200 of dimeric indole alkaloids are known. It is then decarboxylated to indole acetaldehyde by indolepyruvate decarboxylase. The effects described are similar to those of indole tryptamine psychedelics. The tryptamine skeleton is part of the vast majority of indole alkaloids. Reserpine is one of dozens of indole alkaloids isolated from the plant "Rauvolfia serpentina". Later, the plants were joined by pure preparations of indole alkaloids. This reaction is particularly useful in the Fischer indole synthesis of triptan compounds and indometacin. The compound is an isomer of indole.