PROBLEM TO BE SOLVED: To provide intermediates for new and useful analogs of 4-amino-thalidomide.
SOLUTION: These analogs include S(-)-4-amino-thalidomide and R(+)-4-amino-thalidomide. A method for obtaining R(+) or R(-) (2-benzyloxycarbonylamino)-glutarimide as an intermediate is a method comprising cyclizing N-benzyloxycarbonylglutamine with carbonyldiimidazole in tetrahydrofuran.
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