Germacrene
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Germacrenes are a group of five naturally occurring volatile organic hydrocarbons of the sesquiterpene and cycloalkene class. Germacrenes are typically produced in a number of plant species for their antimicrobial and insecticidal properties, though they also play a role as insect pheromones. Two prominent molecules are germacrene A and germacrene D.
Structures
Germacrene has five isomers.
| Germacrene A | Germacrene B | Germacrene C | Germacrene D | Germacrene E |
| Germacrene A | Germacrene B | Germacrene C | Germacrene D | Germacrene E |
Natural occurrences
The essential oils of deadnettles (genus Lamium),[1] hedgenettles (genus Stachys),[2] and Clausena anisata are characterized by their high contents of germacrene D. Germacrene B is a major component of patchouli oil.[3]
References
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Further reading
General
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Germacrene A
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Germacrene D
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