The present invention discloses a composition for inhibiting α-glucosidase and application thereof, and belongs to the technical field of natural active compounds. The composition of the present invention contains daidzein and quercetin derivatives, and the quercetin derivative is taxifolin or 3-O-methyl quercetin, where the mass ratio of the daidzein to the taxifolin is 8:25-10:25; and the mass ratio of the daidzein to the 3-O-methyl quercetin is 8:2-8:4. The composition of the present invention has an obvious synergistic effect of inhibiting α-glucosidase, and the effect thereof is better than that of using the flavonoid compound alone, and may reduce a dosage of the use of drugs and occurrence of drug resistance.

The present invention discloses a composition for inhibiting α-glucosidase and application thereof, and belongs to the technical field of natural active compounds. The composition of the present invention contains daidzein and quercetin derivatives, and the quercetin derivative is taxifolin or 3-O-methyl quercetin, where the mass ratio of the daidzein to the taxifolin is 8:25-10:25; and the mass ratio of the daidzein to the 3-O-methyl quercetin is 8:2-8:4. The composition of the present invention has an obvious synergistic effect of inhibiting α-glucosidase, and the effect thereof is better than that of using the flavonoid compound alone, and may reduce a dosage of the use of drugs and occurrence of drug resistance.

An organic light emitting element produced by using a light emitting composition that contains both a first compound having a PBHT value more than 0.730 and a second compound having ES1 lower than that of the first compound and AEsT less than 0.20 eV is excellent in durability. ES1 is the lowest excited singlet energy level, AEsT is the difference between the lowest excited singlet energy level and the lowest excited triplet energy level.

The present invention relates to a browning-inhibiting composition containing a compound represented by the following formula (1): ##STR00001##
wherein R.sup.21, R.sup.22, R.sup.23, R.sup.24, R.sup.26 and R.sup.27 each independently represent a hydrogen atom or a substituent, and at least one of R.sup.21 or R.sup.23 is a hydrogen atom; when R.sup.23 represents a hydrogen atom, at least one of R.sup.22 or R.sup.24 represents a substituent; R.sup.25 represents a hydrogen atom, an oxygen atom, or a substituent; R.sup.22 and R.sup.23, or R.sup.23 and R.sup.24 may be bonded together to form a ring with an oxygen atom and a carbon atom to which these Rs are bonded; R.sup.25 and R.sup.26, or R.sup.26 and R.sup.27 may be bonded together to form a ring structure with carbon atoms to which these Rs are bonded; X represents an oxygen atom or —CH.sub.2—; and a dashed line may represent a double bond.

The present invention relates to a browning-inhibiting composition containing a compound represented by the following formula (1): ##STR00001##
wherein R.sup.21, R.sup.22, R.sup.23, R.sup.24, R.sup.26 and R.sup.27 each independently represent a hydrogen atom or a substituent, and at least one of R.sup.21 or R.sup.23 is a hydrogen atom; when R.sup.23 represents a hydrogen atom, at least one of R.sup.22 or R.sup.24 represents a substituent; R.sup.25 represents a hydrogen atom, an oxygen atom, or a substituent; R.sup.22 and R.sup.23, or R.sup.23 and R.sup.24 may be bonded together to form a ring with an oxygen atom and a carbon atom to which these Rs are bonded; R.sup.25 and R.sup.26, or R.sup.26 and R.sup.27 may be bonded together to form a ring structure with carbon atoms to which these Rs are bonded; X represents an oxygen atom or —CH.sub.2—; and a dashed line may represent a double bond.

A method to prepare and/or isolate water soluble anthocyanins is provided.

A method to prepare and/or isolate water soluble anthocyanins is provided.

The present invention relates to novel N-acyl-diarysulfonamides acting as inhibitors of bacterial aminoacyl-tRNA synthetase. These can be used as medicines or as constituent of medicines for the treatment of bacterial infections. ##STR00001##

The present invention relates to novel N-acyl-diarysulfonamides acting as inhibitors of bacterial aminoacyl-tRNA synthetase. These can be used as medicines or as constituent of medicines for the treatment of bacterial infections. ##STR00001##

Novel compounds of the structural formula (I), and the pharmaceutically acceptable salts thereof, are agonists of G-protein coupled receptor 40 (GPR40) and may be useful in the treatment, prevention and suppression of diseases mediated by the G-protein-coupled receptor 40. The compounds of the present invention may be useful in the treatment of Type 2 diabetes mellitus, and of conditions that are often associated with this disease, including obesity and lipid disorders, such as mixed or diabetic dyslipidemia, hyperlipidemia, hypercholesterolemia, and hypertriglyceridemia. ##STR00001##