A. Hammadi et al. / Tetrahedron 56 (2000) 4473±4477
4477
Poulin, J. C.; Kagan, H. B. Tetrahedron: Asymmetry 1992, 3,
1247±1262.
Identi®cation of diastereomers
5. Ojima, I.; Yoda, N.; Yatabe, M.; Tanaka, T.; Kogure, T.
Tetrahedron 1984, 40, 1255±1268.
The stereoselectivity was mesured by HPLC with a Vydac
18C column (250£4.6 mm2) using acetonitril-water (35/65)
eluent. The ¯ow rate was 1 ml min21 with UV detection at
280 nm. The resultant diastereomers 1a, 1b, 2a and 2b were
characterized as compared to reference compounds.
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Â
8. Hammadi, A.; Meunier, G.; Menez, A.; Genet, R. Tetrahedron
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