| 摘要 |
The purpose of this invention is: - new selenohydroxy acid compounds and their derivatives; - their process for the preparation; - use of the said new compounds as precursors of L(+).-selenomethionine and/or source of selenium in human or animal nutrition, in cosmetics and pharmaceutics; - and nutritional, cosmetic and pharmaceutical compositions containing them. The new compounds that are the subject of this invention satisfy the general formula (I) in which n=0, 1 or 2, R1= OH, OCOR3, OPO3H2, OPO(OR4)(OR5), or OR6, R2= OH, R3, or NHR7, R3= particularly alkoxyl (C1-C26), ceramide 1, ceramide 2, ceramide 3, ceramide 4, ceramide 5, ceramide 6a and 6b, S-cysteinyl, S-glutathionyl, carnitoyl, lipids, polyols, OR4 = OR5 = particularly alkoxyl (C1-C26), ceramide 1, ceramide 2, ceramide 3, ceramide 4, ceramide 5, ceramide 6a and 6b, S-cysteinyl, S-glutathionyl, carnitoyl, lipids, polyols, OR6= pyruvate, lactate, citrate, fumarate, maleate, myristate, palmitate, stearate, palmitoleate, oleate, linoleate, natural fatty acids, or 13-cis retinoate R7 = H, alkyl, natural amino acids, or natural amines. |
