Understanding mechanisms of terpene synthases using substrate analogs.

Terpene synthases (TS) transform achiral prenyl substrates into elaborate hydrocarbon scaffolds with multiple stereocenters through a series of cyclization reactions and carbon skeleton rearrangements. The reactions involve high-energy carbocation intermediates that must be stabilized by the enzyme along the pathway to the desired products. A variety of substrate analogs have been used to investigate TS mechanism. This article will focus on a class of analogs which strategically replace hydrogen atoms with fluorine to inhibit the generation of specific carbocation intermediates. We will explore the synthesis and use of the analogs to study TS mechanism.

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