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 animal nutrition
The success of the direct conversion of α,β-unsaturated carbonyl compounds into the corresponding diselenoacetals by means of selenol/zinc chloride or tris(seleno)borane greatly depends on the starting carbonyl derivative. Enals and cyclic enones are transformed most efficiently, whereas acyclic enones mainly produce 1,4-addition compounds.
Methionine and seleno-methionine type peptide and peptoid building blocks synthesized by five-component five-center reactions
作者:Goran N. Kaluđerović、Muhammad Abbas、Hans Christian Kautz、Mohammad A. M. Wadaan、Claudia Lennicke、Barbara Seliger、Ludger A. Wessjohann
DOI:10.1039/c7cc00399d
日期:——
A first example of Ugi 5-component 5-center reactions resulted in methionine and Se-methionine type peptide and peptoid building blocks.
Ugi 5组分5中心反应的第一个例子导致了蛋氨酸和Se-蛋氨酸型肽和肽样建筑模块。
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 animal nutrition
申请人:Tetrahedron
公开号:US08309763B2
公开(公告)日:2012-11-13
The present invention relates to a novel process for preparing 2-hydroxy-4-methylselenobutyric acid from 3-methylselenoproprion-aldehyde. The 2-hydroxy-4-methylselenobutyric acid is obtained alone or as a mixture with its sulphur-containing analogue. The invention also relates to the compositions, in particular nutritional compositions, comprising a mixture of 2-hydroxy-4-methylselenobutyric acid and 2-hydroxy-4-methylthiobutyric acid, and a physiologically acceptable medium, and to the use of this mixture as a dietary ingredient.