Isolation and structure determination of minor components of teicoplanin
โ Scribed by M. Zanol; A. Cometti; A. Borghi; G. C. Lancini
- Book ID
- 112721386
- Publisher
- Springer
- Year
- 1988
- Tongue
- English
- Weight
- 163 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0009-5893
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๐ SIMILAR VOLUMES
During the purification of virginiamycin S\* three additional minor components were observed on thin-layer chromatography on silicagel in the system chloroform-methanol, 95:5. viz. S1 (Rf 0.6), S2 (Rf 0.35), S3 (Rf 0.5) besides virginiamycin S (Rf 0.8). These minor components were not present during
We report here a successful example of organic structure determination whichrequires several steps of chemical procedure and has readily been performed using 13C NMR spectroscopy without chemical degradations. Triterpenoid glycosides, saikosaponin-a (3, -b,--b,, -c, -d (2, and -f were already isolat