GV118819X, a novel tricyclic -lactam antibiotic of GlaxoWellcome, is a racemic mixture of two diastereoisomers, A and B. Of the two diastereoisomers, only A is available as a pure compound. By analyzing mixtures of GV118819X and A, a partial phase diagram is constructed, which indicates the presenc
A Novel Approach to the Synthesis of Precursors of Tricyclic β-Lactam Antibiotics
✍ Scribed by Rita Annunziata; Maurizio Benaglia; Mauro Cinquini; Franco Cozzi; Laura Poletti; Laura Raimondi; Alcide Perboni
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 296 KB
- Volume
- 1999
- Category
- Article
- ISSN
- 1434-193X
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✦ Synopsis
The stereoselective synthesis of two precursors of tricyclic β-ring-forming reaction followed by the reduction of a functionalized aromatic substituent at C-4 of the β-lactam lactam antibiotics (trinems) has been attempted by a novel approach that involves a highly stereoselective azetidinone nucleus.
trichlorotitanium enolate of 2-pyridylthioesters with im- [a] Centro C.N.R. and Dipartimento di Chimica Organica e Industriale, water in the presence of a catalytic amount of Pd(OAc)
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