It is axiomatic that in circular dichroism studies, knowledge of the absolute configuration allows determination of the conformation, and vice versa (1). The tetracycline antibiotics are -unusually complex from a conformational standpoint, but choice of appropriate conditions allows one to obtain a
The conformation of macrolide antibiotics. III. Circular dichroism and the conformation of erythromycins
β Scribed by L.A. Mitscher; B.J. Slater; T.J. Perun; P.H. Jones; J.R. Martin
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- French
- Weight
- 215 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
β¦ Synopsis
Received in USA 1st Mgust ~63; -rec&ved in UK for publication 6th titober 1969) There has been considerable recent interest in the solution conformation of macrolide antibiotics based upon the reasonable expectation that this knowledge would lead to deeper insight into their chemical, physical and biological properties (1,2,3,4). Of the various possibilities put forth for erythromycin, the CD data in this note, the accompanying nmr evidence (41, and earlier X-ray measurements (5) are most consistent with conformation I,.b c f representing the After completion of this manuscript a full account (14) of Demarco's work (3) appeared in which a somewhat modified conformation is presented.
π SIMILAR VOLUMES
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## Abstract The circular dichroism (CD) spectra of the four usual deoxymononucleosides, all sixteen deoxydinucleotides, and a number of trinucleotides have been measured. The dimer spectra are quite different from the sum of the spectra of their constituent monomers. This indicates the presence of
Nuclear magnetic resonance techniques have recently been applied to the determination of the solution conformation of the 14-membered lactone in the erythromycin series (1,2), and the conformations revealed by these independent studies are in substantial agreement. One