Intermediates for the preparation of penicillin and cephalospori

Details Intermediates for the preparation of penicillin and cephalospori Intermediates for the preparation of penicillin and cephalospori

1985-08-02

1987-02-03

Rizzo, Nicholas S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540215, 540222, 540228, 540230, 540313, 540317, C07D50102, A61K 31545

Patent

active

046407987

ABSTRACT:
There is described a process for preparing a sulphoxide of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4, taken individually, are alkyl, alkoxy or aryl groups, X is an alkylene group, R.sup.5 is a carboxylic acid protecting group and Y is a linking group through one or two carbon atoms forming a penam or cephem nucleus, which comprises reacting a compound of formula ##STR2## with an oxidizing agent. .alpha.-Sulphoxide compounds of formula (I) are also provided as novel intermediates.

REFERENCES:
Djuric et al., Tetrahedron Letters, vol. 22, No. 19, pp. 1787-1790 (1981).

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