Abstract
Two series of compounds were designed to mimic the transition state and high-energy intermediates (HEI) of the enzymatic reaction of 6-phosphogluconate dehydrogenase (6PGDH). Sulfoxide analogues (7-11) were designed to mimic the transition state during the oxidation of the substrate to 3-keto-6-phosphogluconate, an enzyme-bound intermediate of the enzyme. Hydroxamate and amide derivatives Of D-erythronic acid were designed to mimic the 1,2-cis-enediol HEI of the 6PGDH reaction. These two series of compounds were assayed as competitive inhibitors of the Trypanosoma brucei and sheep liver enzymes, and their selectivity value (ratio sheep/parasite) was calculated. The sulfoxide transition-state analogues showed weak and selective inhibition of the T. brucei enzyme. The hydroxamic derivatives showed potent and selective inhibition of the T brucei 6PGDH with a K-i in the nanomolar range.
Original language | English |
---|---|
Pages (from-to) | 3427-3437 |
Number of pages | 11 |
Journal | Journal of Medicinal Chemistry |
Volume | 47 |
Issue number | 13 |
DOIs | |
Publication status | Published - 17 Jun 2004 |