Process for the manufacture of...

Details Process for the manufacture of... Process for the manufacture of...

C - Chemistry, Metallurgy

07

D

260/244.5

C07D 265/08 (2006.01) C07C 229/22 (2006.01) C07C 233/83 (2006.01) C12P 13/04 (2006.01)

Patent

CA 1337694

The invention relates to compounds of formula Image (IV) in which R2 is an esterifying radical and R4 is the radical of a carboxylic acid or of a carbonic acid semiester R4COOH, their pure diastereoisomers, and salts thereof. These compounds are useful as intermediates in the production of starting materials for the manufacture of .beta.-lactam antibiotics.

616919

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