
| (2s,3r)-n-benzyloxycarbonyl- 2,3-diphenylmorpholin-6-one |
| benzyl (2s,3r) -(+)-6-oxo-2,3-diphenyl-4-morpholinecarboxylate |
| benzyl(2s,3r)-(+)-6-oxo-2,3 -diphenyl-4-morpholinecarboxylate |

| (2s,3r)-n-benzyloxycarbonyl- 2,3-diphenylmorpholin-6-one |
| benzyl (2s,3r) -(+)-6-oxo-2,3-diphenyl-4-morpholinecarboxylate |
| benzyl(2s,3r)-(+)-6-oxo-2,3 -diphenyl-4-morpholinecarboxylate |