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Sesquiterpene
Sesquiterpenes are a class of terpenes that consist of three isoprene units and have the empirical formula C15H24. Like monoterpenes, sesquiterpenes may be acyclic or contain rings, including many unique combinations. Biochemical modifications such as oxidation or rearrangement produce the related sesquiterpenoids.
Sesquiterpenes are found naturally in plants and insects, as semiochemicals, e.g. defensive agents or pheromones.
==Acyclic==
The reaction of geranyl pyrophosphate with isopentenyl pyrophosphate results in the 15-carbon farnesyl pyrophosphate which is an intermediate in the biosynthesis of sesquiterpenes such as farnesene. Oxidation of farnesene then provides sesquiterpenoids such as farnesol.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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