Crystalline 3-hydroxycephalosporin solvates

Details Crystalline 3-hydroxycephalosporin solvates Crystalline 3-hydroxycephalosporin solvates

C - Chemistry, Metallurgy

07

D

260/101.5

C07D 501/59 (2006.01) A61K 31/345 (2006.01) A61K 31/545 (2006.01) C07D 501/00 (2006.01) C07D 501/20 (2006.01) C07D 501/22 (2006.01) C07D 501/26 (2006.01) C07D 501/30 (2006.01) C07D 501/32 (2006.01) C07D 501/60 (2006.01) C07F 9/145 (2006.01) C07F 9/146 (2006.01) C07D 501/12 (2006.01)

Patent

CA 1142173

X-5105A -1- ABSTRACT 4'-Nitrobenzyl 7-phenoxyacetamide-3-hydroxy- 3-cephem-4-carboxylate forms crystalline solvates with acetic acid, propionic acid and methylene chloride. The corresponding 3-hydroxy-3-cephem sulfoxide forms crystalline solvates with acetic acid, propionic acid and methanol. The described solvates allow for facile isolation and purification of 4'-nitrobenzyl 7-phenoxy- acetamido-3-hydroxy-3-cephem-4-carboxylate and its 1- oxide.

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