Azetidinone derivatives and method for producing azetidinone and

Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...

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C07D51304

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055960960

ABSTRACT:
New compounds are disclosed having the general formulas (1) and (2): ##STR1## Also described is a process for preparing the compounds of formulas (1) and (2). Further described is a process for preparing a cephalosporin derivative having formula (5): ##STR2## by converting the compound of formula (1) to the compound of formula (2) and then converting the compound of formula (2) to the compound of formula (5).

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Eagle et al. "The Rearrangement of p-Nitrobenyl 2R-(1R, 5R)-3-Benzylidene-4-Formyl-6-Oxo-4, 7-Diaza-2-Thiabicyclo (3, 2, 0) Heptan-7-yl)-3-Methylbut-3-Enoate 2'-Oxide" in Tetrahedron Letters, No. 47, pp. 4703-4706, Pergamon Press 1978. Month of publication not provided.
Sigeru Torii et al. "Penicillin-Cephalosporin Conversion III. A Novel Route to 3-Chloromethyl-.DELTA..sup.3 -Cephans" in Tetr. Letters, vol. 23, No. 21, pp. 2187-2188, Month of publication not provided 1982.
Search Report in EPO Appln. No. 92102776.9 mailed Sep. 4, 1992.

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