1,2,3-Triaminoguanidinium chloride was combined with benzaldehyde and hydratropic aldehyde to furnish the corresponding tris(imines), which were converted into 1,2,3-tris(benzylamino)guanidinium salts by catalytic hydrogenation in the former, and by borane reduction in the latter case. The resulting alkyl-substituted triaminoguanidinium salts underwent a threefold carbamoylation with aryl isocy...

Background: Nowadays, cryoprotectant-free vitrification of human sperm in large or small volumes facilitated storage and use of human sperm for long time. However, this procedure was not successful in farm animals. The main finding in the studies is higher sensitivity of these kinds of sperm to sucrose osmolarities. Preliminary studies showed a reversible effect of sucrose on goat epididymal sp...

The reaction of ToMTl (ToM=tris(4,4-dimethyl-2-oxazolinyl)phenylborate) and CuBr2 in benzene at 60 °C provides ToMCuBr (1) as an entry-point into tris(oxazolinyl)phenylborato copper chemistry. ToMCuOtBu (2) ToMCuOAc (3) are prepared by the reactions with KOtBu NaOAc, respectively. is transformed (ToMCuOH)2 (4) through hydrolysis. NMR, FT-IR, EPR spectroscopies used to determine electronic struc...

Several bis- and tris-indole derivatives were isolated from a North Sea bacterium that was closely related to Vibrio parahaemolyticus (98% homology). 1,1,3-Tris(3-indolyl)butane (3) is a new compound, and 3,3-bis(3-indolyl)butane-2-one (1a), arundine (1b), and 1,1,1-tris(3-indolyl)methane (2a) were isolated from a microorganism for the first time here. Additionally, many other known compounds w...

Tris-1,10-phenanthroline manganese(II) complex was synthesized by microwave irradiation. The synthesized complex was characterized by UV-visible and FT-IR spectroscopy. Its electrochemical behaviour was examined by cyclic voltammetry (CV). The tris-1,10-phenanthroline manganese(II) complex was used for the electrochemical sensing of catechol. The manganese ion gets reduced as the oxidation of c...

The effect of Tris, Glycine and Tricine on alkaline phosphatase activity was tested at a pH of 8.6, 8.85 and 9.1, using pNPP as substrate. Alkaline phosphatase activity was measured by monitoring the increase in NP absorbance at 420nm using a spectrophotometer. Alkaline phosphatase in Tris buffer at pH 9.1 was found to have the highest activity. MichaelisMenten enzyme kinetic analysis revealed ...

The medium composition was as follows : 0.15 M-sucrose, 30rn~-KCl, 1OmM-choline chloride, 10mM-succinate/Tris, lOmM-Tris/Mops, 3mM-P,/Tris, 2pM-rotenone, 0.1 mMEGTA and 2mg of rat-liver mitochondria/ml; pH7.4. Temperature 25°C. Respiration was stimulated by 0.5 m ~ ADP ( 0 ) in the presence of 1 mM-EDTA, by 20pmol of FCCP/mg (0 ) or by 6Opmol of FCCP/mg (0). When the respiration was stimulated ...