o-Nitrobenzaldehyde is photolabile because of an irreversible phototautomerization, whereas comparable aromatic compounds function as photoprotectors because the tautomerization is reversible. In this experimental and theoretical study we track down the cause of this difference to the electronic changes that occur during the tautomerization.

We present here the draft genome sequence of Sphingopyxis bauzanensis DSM 22271. The assembly contains 4,258,005 bp in 28 scaffolds and has a GC content of 63.3%. A series of specific genes involved in the catabolism or transport of aromatic compounds was identified.

Ninety-seven compounds expected to function as electron donors in charge-transfer complex formation were tested by microscopic fusion methods for formation of solid quinone com plexes. Donor classes included polycyclie hydrocarbons, nitrogen heterocyclics, aromatic amines, aromatic azo compounds, and some miscellaneous compounds. Carcinogenic and noncarcinogenic substances were present in each ...

Biological screening of (hetero)aromatic compounds allowed the identification of some novel inhibitors of Abeta(1-40) aggregation, bearing indane and indole rings as common scaffolds. Molecular decoration of lead compounds led to inhibitors exhibiting a potency, measured by the Thioflavin T fluorimetric assay, ranging from high to low micromolar IC(50). The 2-(p-isopropylphenyldiazenylmethylene...

We consider a set of nine polycyclic conjugated hydrocarbons, which includes at one extreme benzene, the prototype of aromatic compounds, and at the other extreme cyclooctatetraene, a well-known nonaromatic compound, while the remaining seven compounds illustrate molecules of decreasing degree of aromaticity. Using the model of conjugated circuits for calculations of ring currents, we report on...

A series of novel unsaturated five-membered benzo-heterocyclic amine derivatives were synthesized and assayed to determine their in vitro broad-spectrum antiviral activities. The biological results showed that most of our synthesized compounds exhibited potent broad-spectrum antiviral activity. Notably, compounds 3f (IC50=3.21-5.06 μM) and 3g (IC50=0.71-34.87 μM) showed potent activity towards ...

• Co-pyrolysis of grape seeds and polystyrene was performed in an Auger pilot plant. Potential drop-in bio-fuels at a representative scale (TRL-5) were obtained. PS CaO two low-cost materials that enhance both bio-oil yield quality. Decarboxylation, dehydration H 2 -transfer reactions promoted deoxygenation. An aromatic-rich nature the evidenced (?40 MJ/kg). The catalytic co-pyrolysis successfu...

Oxidative stress is a widespread phenomenon in the pathology of neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis. Neuronal cell death due to oxidative stress may causally contribute to the pathogeneses of these diseases. Therefore, neuroprotective antioxidants are considered to be a promising approach to slow down disease progression...

Mechanisms for electron transport to Fe(III) were investigated in GS-15, a novel anaerobic microorganism which can obtain energy for growth by coupling the complete oxidation of organic acids or aromatic compounds to the reduction of Fe(III) to Fe(II). The results indicate that Fe(III) reduction proceeds through a type b cytochrome and a membrane-bound Fe(III) reductase which is distinct from t...