摘要:
PROBLEM TO BE SOLVED: To provide a composition in which an N,N'-diarylmethylene ethylenediamine diacetic ester useful for preventing aging of skin with ultraviolet light is dissolved in a specific solvent, and the dissolution thereof is maintained over a long period of time. SOLUTION: The cosmetic and/or dermatological composition includes (a) at least one compound based on the N,N'-diarylmethylene ethylenediamine diacetic ester; and (b) an effective amount of at least one solvent which is a solvent selected from among (i) isononyl isononanoate; (ii) dimethyl isosorbide; (iii) an amino acid ester represented by formula (II); and (iv) a mixture thereof in a physiologically acceptable medium containing at least one oil. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To easily obtain the subject new compound as a new pseudobiocompound having ceramide-like action from a natural stock. SOLUTION: This new compound is expressed by formula I [R is a 5-50C (hydroxyl-substituted) alkyl or alkenyl; R is a 1-49C (hydroxyl-substituted) alkyl or alkenyl; Y and Y are each H or OH; R and R are each H, a 1-10C alkyl or alkenyl, or joined together into a 1-3C (substituted) alkylene, forming a heterocycle together with a chain lying therebetween], e.g. trans-4-hydroxy-l- proline 1-dodecyl ester. The compound of formula I is obtained by esterifying a hydroxyamino acid (salt) of formula II by the aid of an alcohol of the formula R -OH to form an intermediate of formula III or formula IV (A is an inorganic or organic anion) which in turn is condensed with a compound of the formula R -COX (X is hydroxy, a halogen, etc.).
摘要:
1. Optically active derivatives of 2-imidazolin-5-ones and 2-imidazoline-5-thiones. 2. They are of general formula I: with M = O, S or optionally halogenated CH2 W = O, S or S=O p = 0 or 1 R , R and R are a hydrocarbon radical, especially an aryl radical, which is optionally substituted, especially by halogen atoms R is H or optionally halogenated C1-C2 alkyl R is a hydrocarbon radical. 3. Use as agricultural fungicides.
摘要:
PURPOSE:To obtain tryptophan from an aqueous solution containing tryptophan together with other amino acids, by contacting the solution with a strongly acidic cation exchange resin beads, desorbing the other amino acids from the resin with an aqueous solution of an acid, etc., and then separating tryptophan with an alkaline aqueous solution. CONSTITUTION:An aqueous solution containing tryptophan together with other amino acids is made to contact with strongly acidic cation exchange resin beads filled in a column to effect the adsorption of tryptophan and a part of the coexisting amino acids, and the resin is made to contact with an aqueous solution of an acid or an inorganic salt to effect the desorption of the adsorbed coexisting amino acids. Thereafter, the adsorbed tryptophan is desorbed with an alkaline aqueous solution, and the desorbed solution is made to contact again with the resin. The adsorption and desorption are repeated to separate the tryptophan in the form of highly concentrated solution. EFFECT:An alkaline aqueous solution having a tryptophan concentration of 3-15wt% and free from impurity amino acid can be produced.
摘要:
This invention relates to analogs of peptidase substrates in which the amide group containing the scissile amide bond of the substrate peptide has been replaced by an activated electrophilic ketone moiety. These analogs of the peptidase substrates provide specific enzyme inhibitors for a variety of proteases, the inhibition of which will have useful physiological consequences in a variety of disease states.
摘要:
NEW MATERIAL:A pyridoxamine compound shown by the formula I. EXAMPLE:( + or - )-15-Aminomethyl-14-hydroxy-5,5-dimethyl-2,8-dithia[9]( 2,5 )pyridinophane. USE:A reagent for synthesizing an optical active amino acid. Having high stereoselectivity. The possibility to prepare by products is lost, purification by distillation is possible, purification operation is easy, and a large amount of handling can be carried out. PROCESS:A pyridinophane shown by the formula II is treated with a hydroxylamine hydrochloride in the presence of a base, to give an oxime compound shown by the formula III. The oxime compound shown by the formula III is reduced with NaBH4, etc., to give a pyridoxamine compound shown by the formula I.
摘要:
PROBLEM TO BE SOLVED: To provide a method for synthesizing N-acylamino acid or N-acylpeptide without using fatty acid chloride.SOLUTION: The method for producing N-acylamino acid or N-acylpeptide comprises a step of reacting ionic liquefied amino acid or peptide (A) with a fatty acid or ester thereof (B) under such a condition that a molar ratio of (A):(B) is 1:10 to 10:1.
摘要:
PROBLEM TO BE SOLVED: To provide a method for synthesizing a novel ferromagnetic organic magnetic fluid and a method for using the same.SOLUTION: A ferromagnetic organic magnetic fluid has a remarkably stronger magnetism than metal salts having an original magnetism by binding various kinds of diamagnetic organic compounds to the metal salts MXn having a magnetism by a coordination bonding and an ion bonding and is shown by a formula [I] or in particular shown by a formula (A) for example. Here, M is trivalent Fe, divalent Fe, divalent Co, divalent Mn, trivalent Dy, trivalent Nd, and trivalent Sm; X is halogen atoms such as fluorine atom, chlorine atom, bromine atom, and iodine atom; and n is an integer of 2 or 3.