The reaction of the neutral, base-stabilised diborenes 1a,b with the well-known hydroboration reagent 9-borabicyclo[3.3.1]nonane (9-BBN) is presented. This leads to the formation of a nonclassical structural motif with a B3 core concomitant with the cleavage of a B-C bond. This compound has been characterised in solution and by X-ray crystallography. According to Wade's rules these rare B3 clus...

Background-—Perturbed balance between NO and O2 . (ie, NO/redox imbalance) is central in the pathobiology of diabetesinduced vascular dysfunction. We examined whether stimulation of b3 adrenergic receptors (b3 ARs), coupled to endothelial nitric oxide synthase (eNOS) activation, would re-establish NO/redox balance, relieve oxidative inhibition of the membrane proteins eNOS and Na-K (NK) pump, a...

The article analyzed the impact of corporate governance on value Brazilian publicly held companies listed in Stock Exchange, aka B3, during Covid-19 crisis, inferring behavior stocks B3. In study, windows were chosen to reflect maximum fall B3 index, “Ibovespa”, March 3rd, 2020, and its recovery June 1st, 2021, order contemplate full effect main companies’ window, control worked for return shar...

Tetracenomycins B3 and D3, besides tetracenomycin D (D1), were produced by a blocked mutant of the elloramycin producer Streptomyces olivaceus TU 2353. The compounds were isolated as red powders, and their structures were elucidated by comparing their physicochemical data with those of the known tetracenomycins A2, B1, B2, D and E. Tetracenomycin B3 (2), the main compound, and tetracenomycin D ...

The mossy fiber to CA3 pyramidal neuron synapse in the hippocampus displays an atypical form of NMDA receptor-independent long-term potentiation (LTP). Plasticity at this synapse is expressed in the presynaptic terminal as an elevated probability of neurotransmitter release. However, evidence indicates that postsynaptic mechanisms and trans-synaptic signaling through an association between post...