Evidence for the ionization steps in monoterpene cyclization reactions using 2-fluorogeranyl and 2-fluorolinalyl pyrophosphates as substrates.

@article{Croteau1986EvidenceFT,
  title={Evidence for the ionization steps in monoterpene cyclization reactions using 2-fluorogeranyl and 2-fluorolinalyl pyrophosphates as substrates.},
  author={Rodney B. Croteau},
  journal={Archives of biochemistry and biophysics},
  year={1986},
  volume={251 2},
  pages={
          777-82
        }
}
  • R. Croteau
  • Published 1 December 1986
  • Chemistry, Biology
  • Archives of biochemistry and biophysics

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Terpene Cyclizations inside a Supramolecular Catalyst: Leaving-Group-Controlled Product Selectivity and Mechanistic Studies.

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Steady‐state kinetic experiments with farnesyl PP and the 6‐fluoro analogue showed that the overall catalytic efficiencies (kcat/Km) are essentially the same for both substrates.

Terpene cyclization catalysed inside a self-assembled cavity.

Evidence indicates that the direct isomerization of a geranyl cation to the cisoid isomer, which so far was considered unlikely, is feasible and the first example of a successful THT cyclization inside a supramolecular structure is reported.

A 1,6-ring closure mechanism for (+)-δ-cadinene synthase?

The results reported here do not unambiguously rule in favor of 1,6- or 1,10-cyclization, but demonstrate the mechanistic versatility inherent to DCS and highlight the possible existence of multiple mechanistic pathways.

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Mechanism of the pyrophosphate migration in the enzymatic cyclization of geranyl and linalyl pyrophosphates to (+)- and (-)-bornyl pyrophosphates.

The absence of P alpha-P beta interchange and the complete lack of positional 18O isotope exchange of the pyrophosphate moiety are compatible with tight ion pairing of intermediates in the coupled isomerization-cyclization of geranyl pyroph phosphate and establish a remarkably tight restriction on the motion of the transiently generated pyphosphate anion with respect to its cationic terpenyl reaction partner.

Farnesyl pyrophosphate synthetase. Mechanistic studies of the 1'-4 coupling reaction with 2-fluorogeranyl pyrophosphate.

These data are interpreted in terms of an ionization-condensation-elimination mechanism for the 1'-4 coupling reaction, which shows 2-fluorogeranyl pyrophosphate is a competitive inhibitor against geranyl pyphosphate.