## Abstract Azachlorins __rac__β10a,b, __rac__β11, and __rac__β16, a novel type of hydroporphinoid compounds, were synthesized from azaporphyrins 8 and 13 by regioselective cycloaddition of singlet oxygen and further transformation by amide acetal Claisen rearrangement. The azaporphyrins are readil
Pigments of the Actinoplanaceae. III. A spirillomycin-type pigment from Spirillospora 1309-b
β Scribed by Dr. T. M. McInnis Jr.; A. Domnas
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 671 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0233-111X
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β¦ Synopsis
Spirillospora 1309-bl), a filamentous bacterium in the family Actinoplanaceae, was described by COUCH (1955). Like many other members of the family, isolate 1309-b produces a pigment that exhibits litmus-like properties. In addition, the substance possesses some antibiotic activity against Xtaphylococcus aureus and Bacillus cereus. On solid and in liquid media, a deep blue pigment is formed which diffuses throughout the culture. I n many respects, it resembles a proteinaceous pigment from Spirillospora 1655 that was studied and named spirillomycin by DOMNAS (1968). The purposes of this study were t o find a defined medium for 1309-b, t o observe the effects of culture conditions on pigment formation, t o isolate the pigment, and characterize some of its properties.
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