The present invention relates to a method for synthesizing ergothioneine or one of the derivatives thereof of following formula (I): or a physiologically acceptable salt, a tautomer, a stereoisomer or a mixture of stereoisomers in all proportions thereof, from a compound of betaine type of following formula (II): ...

The invention relates to a method for the purification of L hercynine. Said method for the purification of L hercynine from a reaction mixture resulting from the reaction of L histidine in controlled pH conditions with a methylating agent Me X in a polar solvent or a mixture of polar solvents at room temperature is ...

A method for preparing a slag having hydraulically binding properties on the basis of a mixture comprising limestone, fly ash and any additives comprising the following steps: mixing the starting materials, supplying the mixture at the upper side of a cylindrical, vertical heat exchanger, supplying the fired product...

The invention relates to a method for the synthesis of 2-thiohistidine or a derivative thereof of the formula (I), or of a physiologically acceptable salt, a tautomer, a stereoisomer or a mixture of stereoisomers in any proportions thereof, from a compound of the formula (II) or a physiologically acceptable salt, a ...

The invention relates to a compound of the 5 acylsulfanyl histidine type and the derivatives thereof of general formula (I) wherein R1 to R3 = H alkyl especially CH3; R4 = H alkyl especially CH3 alkyle(C=0) substituted alkyl (C=O) aryl (C=O); ß alanyl (H2NCH2CH2 (C=O); a amino acyl; R5 = alkyl especially methyl phen...

This invention relates to new selenohydroxy-acids (SHA) and their derivatives, their preparations and applications in nutrition, cosmetics and pharmaceutics. More particularly, this invention relates to the synthesis of 2-hydroxy-4-methylselenobutyric acid, its salts and esters and amides derived from 2-hydroxy-4-me...

ABSTRACT PROCESS FOR PREPARING 2-HYDROXY-4-METHYLSELENOBUTYRIC ACID, ALONE OR AS A MIXTURE WITH ITS SULPHUR-CONTAINING ANALOGUE, AND USES THEREOF IN NUTRITION, IN PARTICULAR IN ANIMAL NUTRITION The present invention relates to a novel process for preparing 2-hydroxy-4-methylselenobutyric acid from 3-methylselen...

The invention relates to a selenium compound. Said selenium compound has formula (I) where R = alkyl; R = H RC(=0) ROC(=0) a aminoacyl CHSeCHCHCH(NH)C(=0) CHSeCHCHCH(OH)C(=0); X = OH OR NH NRR a amino acid CHSeCHCHCH(COOH)NH  CHSeCHCHCH(COOH)0 ; R = alkyl; R= alkyl aryl; R = H alkyl aryl; R and R which can together ...