Biosynthesis via carbocations: theoretical studies on terpene formation

Area of Science:

• Biochemistry
• Computational Chemistry

Background:

• Terpenes are a diverse class of natural products with significant biological activities.
• Understanding terpene biosynthesis is crucial for drug discovery and metabolic engineering.
• Carbocation rearrangements are key steps in terpene formation, often leading to complex structures.

Purpose of the Study:

• To review the applications of quantum chemical calculations in studying terpene biosynthesis.
• To highlight the insights gained from theoretical studies into terpene-forming carbocation rearrangements.

Main Methods:

• Quantum chemical calculations (e.g., DFT) are employed to model reaction pathways.
• Theoretical studies analyze transition states and intermediates in enzymatic reactions.
• Computational methods provide mechanistic details not easily accessible through experiments.

Main Results:

• Quantum chemistry elucidates the energetics and mechanisms of terpene cyclization and rearrangement reactions.
• Theoretical studies have identified key intermediates and transition states in terpene synthase mechanisms.
• Computational insights aid in predicting the products of enzymatic reactions and understanding enzyme evolution.

Conclusions:

• Quantum chemical calculations are powerful tools for dissecting complex enzymatic mechanisms in terpene biosynthesis.
• Theoretical studies provide fundamental insights into the chemical principles governing terpene formation.
• This approach facilitates the rational design of enzymes and the engineering of novel terpene pathways.