Chemistry of carbon compounds – Dipeptides – e.g. – aspartame – anserine – carnosine – etc.
Patent
1979-02-01
1980-10-28
Sutto, Anton H.
Chemistry of carbon compounds
Dipeptides, e.g., aspartame, anserine, carnosine, etc.
260986, 544 16, 544 30, C07F 914
Patent
active
042306442
ABSTRACT:
Novel halogenating agents are derived from triaryl phosphites and chlorine or bromine. They are useful in converting 7-acylamino-3-hydroxy-3-cephem compounds to 7-acylamino-3-halo-3-cephems and the corresponding C-7 imino halide cephem derivatives.
REFERENCES:
Harris et al., "J. Chem. Soci.", (1956), 3038.
Foroman et al., "J. Am. Chem. Soci.", vol. 75, (1953) p. 3145.
Ramirez et al., "J. Am. Chem. Soci.", vol. 90, (1968) p. 3507.
Milobedzki et al., "Rocznik Chemie," vol. 6, (1926) p. 67.
Coe et al., "J. Chem. Soci.", (London), pp. 2281-2288, (1954).
Rydon et al., "J. Chem. Soci.", (London), pp. 3043-3056, (1956).
Blaszczak Larry C.
Fisher Jack W.
Hatfield Lowell D.
Eli Lilly and Company
Lammert Steven R.
Sutto Anton H.
Whale Arthur T.
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