The reaction of 1,4-diphenylbutadiyne along with diphenylacetylene, when carried out with η(5)-[MeOC(O)Cp]Co(PPh(3))(2) resulted in the cyclobutadiene linked dimeric cobalt sandwich compound {[η(5)-MeOC(O)Cp]Co(η(4)-C(4)Ph(3))}(2) (1) along with the known monomeric compound η(5)-[MeOC(O)Cp]Co(η(4)-C(4)Ph(4)). Compound 1, on treatment with KOH gave the dicarboxylic acid {η(5)-[HOC(O)Cp]Co(η(4)-C...

Protein Tyrosine Phosphatases (PTPs) that function as negative regulators of the insulin signaling cascade have been identified as novel targets for the therapeutic enhancement of insulin action in insulin resistant disease states. Reducing Protein Tyrosine Phosphatase1B (PTP1B) abundance not only enhances insulin sensitivity and improves glucose metabolism but also protects against obesity ind...

Many food plants accumulate oxalate, which humans absorb but do not metabolize, leading to the formation of urinary stones. The commensal bacterium Oxalobacter formigenes consumes oxalate by converting it to oxalyl-CoA, which is decarboxylated by oxalyl-CoA decarboxylase (OXC). OXC and the class III CoA-transferase formyl-CoA:oxalate CoA-transferase (FCOCT) are widespread among bacteria, includ...

A comparative study of the cleavage efficiency of succinyl, phthaloyl, oxalyl, 2-(2-nitrophenyl)ethyl, 9-fluorenylmethyl, and 2nitrophenyl supports in 0.5M DBU solutions is described. A decrease in cleavage efficiency is observed when small oligonucleotides containing thymidine are linked to the supports. In these conditions oxalyl supports gave the best yields followed by 2-(2-nitrophenyl)ethy...

AIMS This study was undertaken to evaluate the oxalate-degrading activity in several Lactobacillus species widely used in probiotic dairy and pharmaceutical preparations. Functional characterization of oxalyl-CoA decarboxylase and formyl-CoA transferase in Lactobacillus acidophilus was performed in order to assess the possible contribution of Lactobacillus in regulating the intestinal oxalate h...

An efficient solid-phase-supported peptide synthesis (SPPS) of morpholinoglycine oligonucleotide (MorGly) mimics has been developed. The proposed strategy includes a novel specially designed labile linker group containing the oxalyl residue and the 2-aminomethylmorpholino nucleoside analogues as first subunits.

The N-(2-benzoyl-phenyl) oxalyl derivatives are important models for studying of three-centered intramolecular hydrogen bonding in organic molecules. The quantum theoretical calculations for two crystal structures of N-(2-benzoyl-phenyl) oxalyl (compounds I and II) were performed by Density Functional Theory (B3LYP method and 6-311+G* basis set). From the optimized structures, geometric paramet...

It has long been known that pyrazole and fused pyrazole compounds possess numerous chemical, biological, medicinal and agricultural applications because of their versatile biological activities appearing as antimicrobial, antiviral, antitumor, anti-inflammatory, antihistaminic, pesticidal, antifungal and antipyretic agents. On the other hand, cyclic oxalyl compounds of type 1 have been used suc...