BACKGROUND Derivatives of D-glucosamine and D-galactosamine represent an important family of the cell surface glycan components and their fluorinated analogs found use as metabolic inhibitors of complex glycan biosynthesis, or as probes for the study of protein-carbohydrate interactions. This work is focused on the synthesis of acetylated 3-deoxy-3-fluoro, 4-deoxy-4-fluoro and 3,4-dideoxy-3,4-d...

Fluoro substitution in thermotropic liquid crystals provides a general way of modifying the properties of a parent system. Transition temperatures, mesophase types and other physical properties can be affected by fluoro substitution, so that frequently the behaviors of the parent compound can be manipulated and improved in a predictable manner. This paper discusses the effects of a fluoro subst...

Free radical bromination and nucleophilic fluorination allows the conversion of methyl sorbate into the 6-fluoro analogue which undergoes sequential asymmetric dihydroxylation reactions. A range of 6-deoxy-6-fluorosugars were prepared by using different combinations of ligands. While the enantiomeric excesses obtained were comparable to those from other 6-substituted sorbates, the regioselectiv...

1. 2-Deoxy-2-fluoro-d-galactose, 3-deoxy-3-fluoro-d-galactose, 4-deoxy-4-fluoro-d-galactose, 6-deoxy-6-fluoro-d-galactose and 2-deoxy-d-lyxo-hexose are substrates for yeast galactokinase. 2. The variation in K(m) values for the d-hexose derivatives was not associated with a variation in the value of K(m) for MgATP(2-) indicating that the binding of MgATP(2-) is not modified by the binding of th...

We disclose a general two-step procedure to access hitherto unknown and under explored 5- 6-alkynyl-3-fluoro-2-pyridinamidoximes from 6-bromo-3-fluoro-2-cyanopyridines wide range of easily available bench-stable terminal alkynes, using Sonogashira cross-coupling, as the first step. The generation polar amidoxime group is realized at late stage upon treatment alkynylfluorocyanopyridine by hydrox...

INTRODUCTION Detection of (subclinical) synovitis is relevant for both early diagnosis and monitoring of therapy of rheumatoid arthritis (RA). Previously, the potential of imaging (sub)clinical arthritis was demonstrated by targeting the translocator protein in activated macrophages using (R)-[11C]PK11195 and positron emission tomography (PET). Images, however, also showed significant peri-arti...

W e have used for this implant, 5 leads from 2 different producers: 2187 (16 pts), 4189 (18 pts), 4191 (25 pts) and 4193 (15 pts) from Medtronic and 4512 (48 pts) from Guidmt. As a parameter of better handl ing we have considered a reduced fluoro-time for the positioning of the LV lead. W e have made comparison in fluoro-time for each lead and dividing the 5 leads in two group: stylet-guided le...

In the title compound, C(17)H(12)F(2)N(2)OS, the planar thia-zole ring (r.m.s. deviation = 0.012 Å) makes dihedral angles of 15.08 (9) and 81.81 (6)° with the 4-fluoro-phenyl and 2-fluoro-phenyl rings, respectively. The 2-fluoro-phenyl ring is disordered over two orientations with site-occupancy factors of 0.810 (3) and 0.190 (3). The structure contains inter-molecular C-H⋯O hydrogen bonds.

The shikimate pathway presents an attractive target for malaria chemotherapy. Three shikimic acid analogs exhibited different effects on Plasmodium falciparum growth. (6R)-6-Fluoro-shikimate and (6S)-6-fluoro-shikimate inhibited growth (50% inhibitory concentrations, 1.5 x 10(-5) and 2.7 x 10(-4) M, respectively), whereas 2-fluoro-shikimate had no effect. para-Aminobenzoic acid abrogated the in...

Selective cross-coupling of the protected 6-fluoro-6-iodo-alpha-D-ribo-hex-5-enofuranose with 2 equivalents of 4-ethoxy-4-oxobutylzinc bromide in the presence of Pd[P(Ph)(3)](4) followed by deprotections gave methyl 5,6,7,8,9-pentadeoxy-6-fluoro-alpha/beta-D-ribo-dec-5(Z)-enofuranuronate; a S-ribosylhomocysteine analogue with the sulfur and carbon-5 atoms replaced by the fluoro(vinyl) unit.