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For recent contributions, see: (a) Lotz, B. T.; Miller, M. J. J. Org. Chem. 1993, 58, 618. (b) Saito, S.; Ishikawa, T.; Moriwake, T. Synlett 1993, 139. Bachi, M. D.; Bar-Ner, N. Biomed. Chem. 1993, 3, 2439. Teng, M.; Gasparski, C. M.; Williams, M. A.; Miller, M. J. Biomed. Chem. 1993, 3, 2431. (e) Guzzo, P. R.; Miller, M. J. J. Org. Chem. 1994, 59, 4862.
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For recent contributions, see: (a) Lotz, B. T.; Miller, M. J. J. Org. Chem. 1993, 58, 618. (b) Saito, S.; Ishikawa, T.; Moriwake, T. Synlett 1993, 139. Bachi, M. D.; Bar-Ner, N. Biomed. Chem. 1993, 3, 2439. Teng, M.; Gasparski, C. M.; Williams, M. A.; Miller, M. J. Biomed. Chem. 1993, 3, 2431. (e) Guzzo, P. R.; Miller, M. J. J. Org. Chem. 1994, 59, 4862.
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For recent contributions, see: (a) Lotz, B. T.; Miller, M. J. J. Org. Chem. 1993, 58, 618. (b) Saito, S.; Ishikawa, T.; Moriwake, T. Synlett 1993, 139. Bachi, M. D.; Bar-Ner, N. Biomed. Chem. 1993, 3, 2439. Teng, M.; Gasparski, C. M.; Williams, M. A.; Miller, M. J. Biomed. Chem. 1993, 3, 2431. (e) Guzzo, P. R.; Miller, M. J. J. Org. Chem. 1994, 59, 4862.
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See, inter alia: (a) Overman, L. E.; Sharp, M. J. J. Am. Chem. Soc. 1988, 110, 612. (b) Lin, N.-H.; Overman, L. E.; Rabinowitz, M. H.; Robinson, L. A.; Sharp, M. J.; Zablocki, J. J. Am. Chem. Soc. 1996, 118, 9062. Caderas, C.; Lett, R.; Overman, L. E.; Rabinowitz, M. H.; Sharp, M. J.; Zablocki, J. J. Am. Chem. Soc. 1996, 118, 9073.
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See, inter alia: (a) Overman, L. E.; Sharp, M. J. J. Am. Chem. Soc. 1988, 110, 612. (b) Lin, N.-H.; Overman, L. E.; Rabinowitz, M. H.; Robinson, L. A.; Sharp, M. J.; Zablocki, J. J. Am. Chem. Soc. 1996, 118, 9062. Caderas, C.; Lett, R.; Overman, L. E.; Rabinowitz, M. H.; Sharp, M. J.; Zablocki, J. J. Am. Chem. Soc. 1996, 118, 9073.
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The synthesis of bicyclic β-lactams by related free-radical cyclizations has been extensively developed by Bachi and co-workers, see: Bachi, M. D. In Recent Advances in the Chemistry of β-Lactam Antibiotics; Bentley, P. H., Southgate, R., Eds.; Royal Society of Chemistry: London, 1990; pp 91-105.
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For a recent review of functional group transformations on the β-lactam nucleus see: Wild, H. In The Organic Chemistry of β-Lactams; Georg, G. I., Ed.; VCH: New York, 1993; pp 49-119.
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Wild, H.1
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more..
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For previous asymmetric total syntheses of loracarbef: (a) Bodurow, C. C.; Boyer, B. D.; Brennan, J.; Bunnell, C. A.; Burks, J. E.; Carr, M. A.; Doecke, C. W.; Eckrich, T. M.; Fisher, J. W.; Gardner, J. P.; Graves, B. J.; Hines, P.; Hoying, R. C.; Jackson, B. G.; Kinnick, M. D.; Kochert, C. D.; Lewis, J. S.; Luke, W. D.; Moore, L. L.; Morin, J. M., Jr.; Nist, R. L.; Prather, D. L.; Sparks, D. E.; Vladuchick W. C. Tetrahedron Lett. 1989, 30, 2321. (b) Frazier, J. W.; Staszak, M. A.; Weigel, L. O. Tetrahedron Lett. 1992, 33, 857.
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The authors have deposited atomic coordinates for this compound with the Cambridge Crystallographic Data Centre. The coordinates can be obtained, on request, from the Director, Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge, CB2 1EZ, U.K.
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