Chemistry Letters p. 169 - 172 (1983)
Update date:2022-08-05
Topics:
Shiozaki, Masao
Ishida, Noboru
Hiraoka, Tetsuo
Maruyama, Hiroshi
Reaction of (2R,3R)-N-2,4-dimethoxybenzyl-N-bis(ethoxycarbonyl)methyl-2-bromo-3-hydroxybutylamide (6) with DBU yielded bicyclic β-lactam 7 by a direct cyclization, and its diastereomer 8 and unexpected γ-lactam 9 by another non-direct cyclization.Also (2S
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(1963)Doi:10.1021/jo00203a003
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(2007)Doi:10.1002/ejic.200600672
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(1941)Doi:10.1007/BF00475276
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