3-trifuoromethylsulfonyloxy-substituted 1-carbacephalosporins as

Details 3-trifuoromethylsulfonyloxy-substituted 1-carbacephalosporins as 3-trifuoromethylsulfonyloxy-substituted 1-carbacephalosporins as

1988-08-17

1989-04-11

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544316, 544362, C07D22102

Patent

active

048208167

ABSTRACT:
7.beta.-Acylamino-3-trifluoromethylsulfonyloxy-1-carba-3-cephem-4-carboxyli c acid antibiotic compounds, esters and salts thereof, and the corresponding 7-amino and protected 7-amino 1-carbacephalosporins are provided. The 3-trifluoromethylsulfonyloxy-substituted 1-carbacephalosporins also are useful in a process for preparing 3-halo-1-carbacephalosporins which comprises reacting a 3-triflate ester with a lithium halide in an aprotic polar solvent.

REFERENCES:
patent: 4673737 (1987-06-01), Evans et al.
Evans et al, Chem. Abst 104-5677b (1986).
Evans et al, Chem. Abst. 107-7004r (1987).
Evans et al, Tetrahedron Letters vol. 26, No. 32, pp. 3787-3790 (1985).

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