Chokeberry anthocyanins are susceptible to degradation during processing and storage of processed products. This study determined the effects of three pH levels (2.8, 3.2, and 3.6) and four beta-cyclodextrin (BCD) concen...
Phytochemical stability was studied in dried tomato pulp and dried tomato peel stored at 30 degrees C with various water activity (a(w)) levels and related to glass transition temperature (T-g) and water mobility. At a(w...
Bee pollen has been praised for its good nutrition and therapeutic values. China is the largest producer in the world. Twelve common varieties of monofloral bee pollen collected from China's main producing regions were s...
Different molecular structures of grape tannins have been shown to influence astringency, however, the in-mouth sensory effects of different molecular structures in red wine tannins remains to be established. The objecti...
It was shown that reaction of trehalose with 1 equiv of a fatty acid in pyridine promoted by 1 equiv of the uronium-based coupling agent 2-(1H-benzotriazole-1-y1)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) at ro...
3-Amino-6-aryl- and 3-amino-6-heteroarylpyridazines have been obtained in generally good yield using a nickel-catalyzed electrochemical cross-coupling between 3-amino-6-chloropyridazines and aryl or heteroaryl halides at...
We present a detailed study on the behavior of vinylcyclopropanes as masked donor acceptor system toward the stereoselective synthesis of Z-alkylidenetetrahydrofurans. Results of bromenium catalyzed indirect activation o...
A series of conformationally constrained kanamycin A derivatives with a 2'-hydroxyl group in ring I and a 5-hydroxyl group in ring II tethered by carbon chains were designed and synthesized. Pivotal 5,2'-hydroxyl groups ...
The remodeling of a natural product core framework by means of diversity-oriented synthesis (DOS) is a valuable approach to access diverse/biologically relevant chemical space and to overcome the limitations of combinato...
We report on the decomposition of platinum acetylacetonate (Pt(acac)(2)) in hydrogen induced by flash heating. The changes in the local Pt structure were followed by high energy resolution off-resonant spectroscopy uniqu...
An iodine mediated aromatization leading to a one-pot synthesis of iodo-N-arylanilines and N-arylanilines is reported. This highly regioselective aliphatic-aromatic transformation can be performed with various combinatio...
Fe3O4 synthesized by magnetotactic bacteria and alpha-Fe2O3 synthesized via a microbial-mineralization-inspired process functioned as catalysts for the controlled cationic polymerization of a vinyl ether.
Highly functionalized dihydropyridinones were synthesized via the N-heterocyclic carbene-catalyzed enantioselective [4 + 2] annulation of alpha-chloroaldehydes and azadienes. Hydrogenation of the resulted dihydropyridino...
beta-Glycosyl imidinium triflate is generated from participating thioglycoside donors for disarmed-armed iterative glycosylations and one-pot oligosaccharide synthesis.
A range of arylallenes undergo carbocation-initiated cyclization reaction with N-benzylic and N-allylic sulfonamides in the presence of 10 mol% ferric chloride to give structurally diverse polysubstituted indenes in good...
A regioselective approach for the synthesis of pyrrolopyridinones and pyrroloazepinones is reported employing an Ugi reaction followed by a gold(I) or platinum(II) catalyzed intramolecular hydroarylation.