21056-59-7Relevant articles and documents
QUANTITATIVE SEPARATION AND ANALYSIS OF DIASTEREOMERS OF L-METHIONINE-S,R-SULFOXIMINE VIA CYCLIC N-BLOCKED DERIVATIVES
Sugiyama, Yuichi,Wedler, Frederick C.
, p. 1471 - 1474 (2007/10/02)
The diastereomers of L-methionine-S,R-sulfoximine, blocked at α-N with phthaloyl, then cyclized with Ac2O to form 3,4,5,6-tetrahydro-1-methyl-3-oxo-4-(N-phthalimido)-1,2-thiazine-1-oxide, could be easily separated by fractional crystallization or HPLC, whereas the parent compounds were very difficult to separate.