Imidazole, indole, indolizidine

Alkaloids can be divided into different t q3es according their pure chemical structures pointing first at the alkaloid base, a basic chemical nucleus. The following are basic types of alkaloids acridones, aromatics, carbo-lines, ephedras, ergots, imidazoles, indoles, bisindoles, indolizidines, manza-mines, oxindoles, quinolines, quinozolines. quinolizidines, phenylisoquinolines, phenylethylamines, piperidines, purines, pyrolidines, pyrrolizidines, pyrro-loindoles, pyrydines, sesquiterpenes, simple tetrahydroisoquinolines, stereoids, tropanes, terpenoids, diterpenes, and triterpenes. 

Mar. ALKAL. 3-alkylpyridine, azirine, azacyclodecanes, p-carboline, C, or C22 bromopyrrole, guanidine, halotyrosine, (bis)imidazole, (bis)indole, imidazoiyi pyrroloazBpine, indolizidine, pept. alkal., pyridazine. high high... 

Imidazole alkaloids, 263 Indole alkaloids, 257-263 dehydrobufotenine, 262 dimeric, 261 indole amines, 261-262 pseudophrynamines, 257-261 trypargine, 262-263 Indole amines, 261-262 Indolizidines... 

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