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L-1,2,3,4-Tetrahydro-beta-carboline-3-carboxylic acid is found in garden tomato (var.). L-1,2,3,4-Tetrahydro-beta-carboline-3-carboxylic acid is widespread in many foodstuffs especially fruit juices, jams and fermented foods or beverages. L-1,2,3,4-Tetrahydro-beta-carboline-3-carboxylic acid is formed by Pictet-Spengler condensation of L-tryptophan and formaldehyde in nature or during food processin

Cyclomethyltryptophan is a natural product found in Taraxacum formosanum, Taraxacum mongolicum, and Solanum lycopersicum with data available.

A member of the class of beta-carbolines that is 1,2,3,4-tetrahydro-beta-carboline substituted at position 3 by a carboxy group." []

A member of the class of isoquinolines that is 5,8-dihydroisoquinoline substituted by methyl, methyl, oxo, methylamino and oxo groups at positions 3, 4, 5, 7 and 8, respectively. It was isolated from Streptomyces Sp. strain Mei37 from North Sea coast, Germany." []

Ethylbenzene in which the pro-R alpha-hydrogen is substituted by the nitrogen at the 1 position of 1H-imidazole-5-carboxylic acid. Its ethyl ester, etomidate, is used as an intravenous anaesthetic." []

A pyridine alkaloid that is 2,2'-bipyridine substituted at position 6 by a hydroxymethyl group and at position 4 by a methoxy group. Isolated from the marine-derived actinomycete Actinoalloteichus cyanogriseus, it exhibits antineoplastic activity." []

(S)-(+)-2,3-Dihydro-1H-pyrrolo[2,1-c][1,4]benzodiazepine-5,11(10H,11aH)-dione is a benzodiazepine.

6-methoxy-2,3,4,9-tetrahydropyrido[3,4-b]indol-1-one is a member of beta-carbolines. 6-Methoxy-2,3,4,9-tetrahydro-1H-beta-carbolin-1-one is a natural product found in Boronia pinnata with data available.

Sannanine is a quinolone. Sannanine has been reported in Streptomyces sannanensis with data available.