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Natural Organohalogens: A New Frontier for Medicinal Agents?

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Gordon W. Gribble

Department of Chemistry, Dartmouth College, Hanover, NH 03755

J. Chem. Educ., 2004, 81 (10), p 1441

DOI: 10.1021/ed081p1441

Publication Date (Web): October 1, 2004

Section:

History, Education, and Documentation

Abstract

More than 4000 naturally occurring organohalogen compounds are known. These include a relatively small number of abiogenic organohalogens from volcanoes, forest fires, geothermal processes, and meteorites, and a very large number of biogenic organohalogens produced by myriad living organisms as part of their chemical makeup that serve as hormones, pheromones, repellents, and natural pesticides. From the chemically simple methyl chloride, methyl bromide, and chloroform to the structurally complex vancomycin, pyrroindomycin, and bastadins, the diversity of these organohalogens is unsurpassed among natural products. Most natural organohalogens contain chlorine (2300) or bromine (2100), but a significant number contain iodine (120) or fluorine (30). Several hundred marine natural products contain both chlorine and bromine. The present article focuses on newly discovered biogenic organohalogens, with an emphasis on those biologically active examples from marine organisms, bacteria, terrestrial plants, and higher life forms including humans.

Keywords (Audience):

General Public

Keywords (Domain):

Biochemistry

Keywords (Feature):

Products of Chemistry

Keywords (Subject):

Bromine

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