Process for production of cephalosporins

Details Process for production of cephalosporins Process for production of cephalosporins

1990-03-08

1991-08-27

Shah, Mukund J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540222, 540228, 540229, 540230, C07D50104

Patent

active

050434390

ABSTRACT:
Cephalosporin intermediates having a replacable organosulfonylyoxy or heterocyclothio group in the 3-position undergo a carbon alkylation process with organocopper reagents to provide 3-hydrocarbon substituted cephalosporin antibiotics.

REFERENCES:
patent: 3985737 (1976-10-01), Spitzer
patent: 4847373 (1989-07-01), Baker et al.
patent: 4855418 (1989-08-01), Cook et al.
patent: 4870168 (1989-09-01), Baker et al.
D. O. Spry et al., Heterocycles, 23, No. 8, 1985; pp. 1901-1905.
B. H. Lipshutz et al., J. Am. Chem. Soc. 1989; 111, 1351-1358.
B. H. Lipshutz et al., Synthesis Apr. 1987--pp. 325-341.

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