Tetrahedron p. 10379 - 10388 (1998)
Update date:2022-08-05
Topics:
Bull, Steven D.
Chernega, Alexander N.
Davies, Stephen G.
Moss, William O.
Parkin, Richard M.
Schollkopf's auxiliary 16 was added to bis-lactim iodide 21 to give 1,2- bis[(3S,6R)-3,6-dihydro-2,5-dimethoxy-3-isopropylpyrazin-6-yl]ethane 22 in 50% d.e. Dimer 22 was separated from its diastereoisomer 23 and deprotected using 6M HCl to afford homochiral (2R,5R)-2,5-diaminohexan-1,6-dioic acid 24.
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