Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen in the nitrogen containing substituent
Patent
1983-10-17
1986-08-05
Raymond, Richard L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Chalcogen in the nitrogen containing substituent
544 69, C07D49804
Patent
active
046044604
ABSTRACT:
Intermediates for preparaing an antibacterial 1-dethia-1-oxacephalosporins which are represented by the following formula: ##STR1## wherein R is a monovalent group (minus the carbonyl) from an acyl derived from a carboxylic or carbonic acid;
REFERENCES:
patent: 4150156 (1979-04-01), Beattie et al.
Ochiai et al, Tetrahedron Letters, No. 23 (1972) pp. 2341-2344.
Ochiai et al, Tetrahedron Letters, No. 31 (1977) pp. 3241-3244.
Chauvette et al, J.A.C.S., vol. 96 (1974) pp. 4986-4987.
Scartazzini et al, Helv. Chim. Acta., vol. 57, No. 7 (1974) pp. 1919-1934.
Hamashima Yoshio
Kikkawa Ikuo
Nagata Wataru
Shoichiro Uyeo
Tsuji Teruji
Raymond Richard L.
Shionogi & Co. Ltd.
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