Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1992-02-05
1993-10-12
Rizzo, Nicholas S.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
540222, C07D50118
Patent
active
052527310
ABSTRACT:
Intermediates of the following formula are disclosed: ##STR1## wherein R.sup.1 is aryl; R.sup.2 is carboxy or protected carboxy; Z.dbd.CH.dbd.CH.sub.2, CH.sub.2 --X.sup.2, --CH.sub.2 --P.sup.+ (R.sup.7).sub.3 .X.sup.3 or CH .dbd.P(R.sup.7).sub.3 wherein X.sup.2 and X.sup.3 are each halogen and R.sup.7 is aryl.
The compounds are useful as intermediates for cephalosporins.
REFERENCES:
patent: 3867379 (1975-02-01), Dolfini et al.
Kawabata Kohji
Masugi Takashi
Takasugi Hisashi
Takaya Takao
Yamanaka Hideaki
Fujisawa Pharmaceutical Co. Ltd.
Rizzo Nicholas S.
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