Intermediates for preparing semi-synthetic penicillins and proce

Details Intermediates for preparing semi-synthetic penicillins and proce Intermediates for preparing semi-synthetic penicillins and proce

1972-01-14

1976-06-08

Rizzo, Nicholas S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

424271, 2603067E, 260243C, 424246, C07D49904, C07D50102

Patent

active

039622150

ABSTRACT:
Phosphorylated penicillins and cephalsporins are described which are obtained by reacting a penicillin or cephalo porin with a trivalent or pentavalent phosphorus halide and treating the thus formed product sequently with an acid chloride, an alcohol and water to form a phosphorylated anhydride of a 6-aminopenicillanic acid or 7-aminocephalosporanic acid salt, respectively, and thereafter acylating the thus formed product and splitting off the carboxyl protective group to obtain the desired penicillin or cephalosporin compound.

REFERENCES:
patent: 3249622 (1966-05-01), Herrling et al.
patent: 3809699 (1974-05-01), Ishimaru et al.

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