Structural studies on penicillin derivatives: 13C nuclear magnetic resonance studies of some penicillins and related sulphoxides
β Scribed by Archer, Robert A.; Cooper, R. D. G.; Demarco, Paul V.; Johnson, Le Roy F.
- Book ID
- 120250106
- Publisher
- Royal Society of Chemistry
- Year
- 1970
- Weight
- 370 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0577-6171
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## Abstract ^13^C n.m.r. spectra of some substituted isoxazoles have been examined to ascertain the reactive site in the metallation of 4βsubstituted 3,5βdimethylisoxazoles. The results obtained indicate that metallation occurred exclusively at the Cβ5 methyl.
C chemical shifts and ''P,l'C spin-spin coupling constants are reported for six model phosphinates and eight synthetic phosphinolipids. The complex spectra of the synthetic phosphinolipids could be assigned from increments and couplings derived from the model compounds. Based on these investigations