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  • 1
    Electronic Resource
    Electronic Resource
    Investigations of the pigments fromCytophaga johnsonae Cy j1 (1978)
    Springer
    Archives of microbiology 117 (1978), S. 253-257 
    Details
    ISSN: 1432-072X
    Keywords: Gliding bacteria ; Cytophaga johnsonae ; New flexirubin-type pigments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Besides carotenoids a complex of flexirubin-type pigments was isolated from the gliding bacteriumCytophaga johnsonae Cy j1 and separated into 6 components, which partly containe chlorine. In spite of the fact that these components still consist of pigment mixtures, the gross structures of 18 new flexirubin-type pigments could be deduced by spectroscopic and chemical investigations. The results open insights into biosynthesis and structural variety of the flexirubins, the novel non-isoprenoid pigments recently found inFlexibacter elegans.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00738543
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  • 2
    Electronic Resource
    Electronic Resource
    Die Strukturen der Xanthocilline Y1 und Y2 (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 3061-3066 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Structures of the Xanthocillins Y1 and Y2Structures 6 and 7 were elucidated for the xanthocillins Y1 and Y2 from Penicillium notatum Westling.
    Notes: Für die Xanthocilline Y1 und Y2 aus Penicillium notatum Westling werden die Strukturen 6 und 7 abgeleitet.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050929
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  • 3
    Electronic Resource
    Electronic Resource
    Untersuchungen an Stoffwechselprodukten von Mikroorganismen, XVII. Neue Pigmente Vom Flexirubin-Typ aus Cytophaga spec. Stamm Samoa (1979)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 196-208 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on Metabolites of Microorganisms, XVVI. New Pigments of the Flexirubin-type from Cytophaga spec. Strain SamoaThe gliding bacterium Cytophaga spec. strain Samoa produces a complex of pigments which consists of 8 substances. These have been shown to possess flexirubin-type structures 6a-h. some of these pigments (6a-d) contain chlorine at ring A. Their structures differ from each other and from flexirubin (1) by the lengths of alkyl substituents at ring B. In contrast to flexirubin no methyl or other alkyl group is found at ring A.
    Notes: Der von dem Gleitenden Bakterium Cytophaga spec. Stamm Samoa produzierte Farbstoffkomplex besteht aus 8 Pigmenten vom Flexirubin-Typ, deren Konstitutionen 6a-h aufgeklärt wurden, Sie unterscheiden sich untereinander und von Flexirubin (1) durch die Länge der Alkylsubstituenten am Ring B. Im Gegensatz zu Flexirubin trägt Ring A weder eine Methyl- noch eine andere Alkyl-Gruppe; 6a-d sind am Ring A chloriert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19791120118
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  • 4
    Electronic Resource
    Electronic Resource
    Untersuchungen an Stoffwechselprodukten von Mikroorganismen, XIX. Über die Synthese einiger antibiotisch wirksamer 2,5-Dialkylresorcine  -  Synthese der Antibiotika DB 2073 und Stemphol (1979)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 1841-1848 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on Metabolites of Microorganisms, XIX. The Synthesis of some Antibiotically Active 2,5-Dialkylresorcinols  -  Synthesis of the Antibiotics DB 2073 and StempholStarting from 5-alkylresorcinol dimethyl ethers stemphol (2), the antibiotic DB 2073 (3) and a series of further 2.5-dialkylated resorcinols were synthesized via the corresponding 4-alkyl-2.6-dimethoxybenzaldehydes and biologically tested.
    Notes: Ausgehend Von 5-Alkylresorcin-dimethylethern wurden über die entsprechenden 4-Alkyl-2.6-dimethoxybenzaldehyde Stemphol (2) und das Antibiotikum DB 2073 (3) sowie eine Reihe weiterer 2.5-dialkylierter Resorcine dargestellt und biologisch getestet.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19791120534
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  • 5
    Electronic Resource
    Electronic Resource
    Untersuchungen an Stoffwechselprodukten von Mikroorganismen, XX. Die Konstitutionen der Pigmente vom Flexirubin-Typ aus Cytophaga johnsonae Cyjl (1979)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 1999-2011 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on Metabolites of Microorganisms, XX. The Structures of the Flexirubin-type Pigments from Cytophaga johnsonae CyjlCytophaga johnsonae Cy jl produces more than 25 different flexirubin-type pigments (2 a-h, 3 a-h, 4 a-h, 5) besides lower concentrations of carotenoids. These pigments could be separated using HPLC. Their structures have been elucidated. 5 is the first known member in this class of bacterial pigments containing two chlorine atoms.
    Notes: Das Gleitende Bakterium Cytophaga johnsonae Cy jl produziert neben wenig Carotinoiden mehr als 25 verschiedene Pigmente vom Flexirubin-Typ (2a-h, 3a-h, 4a-h, 5), deren Trennung u.a. durch Hochdruckflüssigchromatographie gelang. Über die Konstitutionen dieser Pigmente wird berichtet. Mit 5 wurde erstmals in dieser Verbindungsklasse ein dichlorhaltiges Pigment aufgefunden.
    Additional Material: 7 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19791120610
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  • 6
    Electronic Resource
    Electronic Resource
    Untersuchungen an Stoffwechselprodukten von Mikroorganismen, XI: Flexirubin, ein neuartiges Pigment aus Flexibacter elegans (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 2490-2502 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on Metabolites of Microorganisms, XI: Flexirubin, a Novel Pigment from Flexibacter elegansUp to now only carotinoid pigments have been found in ‘gliding bacteria’ of the Flexibacter/Cytophaga-type. The main pigment of Flexibacter elegans was now isolated by chromatographic separation and named flexirubin. Its structure was deduced to be 7. Flexirubin is the first member of a new class of bacterial pigments. In respect to the chemical structure this class is characterized by a polyene-carboxylic acid chromophore, which is esterified with a phenol carrying a long aliphatic side chain.
    Notes: Bisher wurden in den „Gleitenden Bakterien“ vom Typ Flexibacter/Cytophaga nur Carotinoide aufgefunden. Chromatographische Trennung des Farbstoffkomplexes aus Flexibacter elegans führte nun zur Isolierung des Hauptpigmentes Flexirubin, für das Struktur 7 abgeleitet wird. Flexirubin ist der erste Vertreter einer neuartigen Gruppe von Bakterienpigmenten, die sich strukturell durch einen Polyencarbonsäure-Chromophor in Esterbindung mit einem Phenol, das eine lange Alkyl-Seitenkette trägt, auszeichnet.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761090717
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  • 7
    Electronic Resource
    Electronic Resource
    Untersuchungen an Stoffwechselprodukten von Mikroorganismen, XVIII. Zur Konstitutionsaufklärung der Pigmente vom Flexirubin-Typ  -  Massenspektrometrische Untersuchungen (1979)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 209-217 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on Metabolites of Microorganisms, XVIII. The Mass Spectrometric Fragmentation of Flexirubin-type PigmentsThis report describes the electron-induced fragmentation of flexirubin-type pigments and the structure informations deduced from key fragments.
    Notes: Es wird über die elektronenstoß-induzierte Fragmentierung von Pigmenten des Flexirubin-Typs und ihrer Derivate sowie Bedeutung der Schlüsselfragmente für die Konstitutionsaufklärung berichtet.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19791120119
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  • 8
    Electronic Resource
    Electronic Resource
    Antibiotika aus Gleitenden Bakterien, XVII. Myxopyronin A und B - zwei neue Antibiotika aus Myxococcus fulvus Stamm Mx f50 (1983)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 1656-1667 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Antibiotics from gliding Bacteria, XVII. - Myxopyronin A and B - Two Novel Antibiotics from Myxococcus fulvus Strain Mx f50From the gliding bacterium Myxococcus fulvus strain Mx f50 two antibiotics, named myxopyronin A and B, have been isolated and shown to possess the structures 9a and 9b. The two new compounds are 3-acyl-4-hydroxy-α-pyrones with an N-alkenylcarbamate function uncommon to natural products.
    Notes: Aus dem Kulturüberstand des Gleitenden Bakteriums Myxococcus fulvus Stamm Mx f50 (Myxobacterales) wurden zwei Myxopyronin A und B genannte Antibiotika isoliert und konstitutionell aufgeklärt. Es handelt sich um die Verbindungen 9a, b mit einer 3-Acyl-4-hydroxy-α-pyron-Struktur und einer für Naturstoffe ungewöhnlichen N-Alkenyl-Carbamat-Funktion.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198319831003
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  • 9
    Electronic Resource
    Electronic Resource
    Antibiotika aus Gleitenden Bakterien, XXVII. Angiolam A - ein neues Antibiotikum aus Angiococcus disciformis (Myxobacterales)Weitere Einzelheiten zur Kristallstrukturuntersuchung können beim Fachinformationszentrum Energie Physik Mathematik, D-7514 Eggenstein-Leopoldshafen, unter Angabe der Hinterlegungsnummer CSD 51 462, des Autors und des Zeitschriftenzitats angefordert werden. (1985)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1985 (1985), S. 2088-2097 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Antibiotics from Gliding Bacteria, XXVII.  -  Angiolam A - a Novel Antibiotic from Angiococcus disciformis (Myxobacterales)The myxobacterium Angiococcus disciformis, strain An d30, produces besides the antifungal myxothiazol, formerly isolated from Myxococcus fulvus, strain Mx f16, a novel antibiotic 5 named Angiolam A which inhibits the growth of bacteria. Its nineteen-membered lactone-lactam ring, substituted with a long-chain alkyl residue, is formed biogenetically from propionate, acetate, and alanine.
    Notes: Das Myxobakterium Angiococcus disciformis, Stamm An d30, produziert neben dem schon früher aus Myxococcus fulvus, Stamm Mx f16, isolierten antifungischen Myxothiazol ein neues gegen Bakterien wirksames und Angiolam A genanntes Antibiotikum 5. Es zeichnet sich durch einen mit einem langkettigen Alkylrest substituierten, neunzehngliedrigen Lacton-Lactam-Ring aus, der biogenetisch aus Propionat, Acetat und Alanin aufgebaut wird.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198519851016
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  • 10
    Electronic Resource
    Electronic Resource
    Antibiotika aus Gleitenden Bakterien, XXII. Die Biosynthese des Antibiotikums Myxopyronin A aus Myxococcus fulvus Stamm Mx f50 (1984)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1984 (1984), S. 1088-1093 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Antibiotics from Gliding Bacteria, XXII. - The Biosynthesis of Myxopyronin A, an Antibiotic from Myxococcus fulvus, Strain Mx f50The biosynthesis of the antibiotic myxopyronin A (1) from acetate, glycine, and methionine was investigated by feeding experiments with the corresponding 13C- and 15N labeled precursors and observing the labeling pattern by 13C-NMR. The carbon skeleton of the antibiotic is derived from two polyacetate chains. Glycine is incorporated as starting unit into one of the chains. Two of the three methyl groups are incorporated from methionine, the third one from C-2 of acetate.
    Notes: Die Biosynthese des Antibiotikums Myxopyronin A (1) aus Acetat, Glycin und Methionin wurde durch Einbauversuche mit den entsprechenden 13C- und 15N-markierten Vorstufen anhand der 13C-NMR-Spektren aufgeklärt. Das Molekülgerüst wird aus zwei Polyacetat-Ketten aufgebaut, wobei Glycin in einem Fall als Starter fungiert. Zwei der drei Methylverzweigungen stammen aus Methionin, die dritte aus einem C-2-Atom von Acetat.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198419840605
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