Polyanion inhibitors of human immunodeficiency virus. Part III. Polymerized anionic surfactants derived from D-glucose

Benzoylated uronic acid building blocks and synthesis of N-uronate conjugates of lamotrigine

A chemoenzymatic approach towards benzoylated uronic acid building blocks has been investigated starting with benzoylated hexapyranosides using regioselective C-6 enzymatic hydrolysis as the key step. Two of the building blocks were reacted with the antiepileptic drug lamotrigine. Glucuronidation of lamotrigine using methyl (2,3,4-tri-O-benzoyl-α-D-glycopyranosyl bromide)uronate proceeded to give the N2-conjugate. However, lamotrigine-N2-glucuronide was most efficiently synthesised from methyl (2,3,4-tri-O-acetyl-α-D-glucopyranosyl bromide)uronate. Employing nitromethane as solvent with CdCO(3) as a base lamotrigine-N2 glucuronide was prepared in a high yield (41%). Also methyl (2,3-di-O-benzoyl-4-deoxy-4-fluoro-α-D-glucosyl bromide)uronate underwent N-glucuronidation, but the product was unstable, eliminating hydrogen fluoride to give the corresponding enoate conjugate.

Interaction of O-(undec-10-en)-yl-d-glucose derivatives with the Plasmodium falciparum hexose transporter (PfHT)

All-O-undec-en-10-yl derivatives of d-glucose have been prepared and their affinities for the Plasmodium falciparum hexose transporter (PfHT) determined; the O-2 derivative displays a good apparent affinity for PfHT (K(I)=2 microM) with no significant interaction with the mammalian transporter GLUT1. This selectivity points to position -2 of glucose as an appropriate substitution site for the development of inhibitors of P. falciparum glucose uptake.