Go toArchive
Browse byFacets
Bookbag ( 0 )
'Demethylation' in keywords
Results  4 Items
Sorted by   
Publication Year
1982 (1)
1980 (1)
1978 (1)
1975 (1)
1Author    Ulrich Lappe, Wolfgang BarzRequires cookie*
 Title    Degradation of Pisatin by Fungi of the Genus F u sa riu m  
 Abstract    Fifteen strains of Fusarium previously shown to degrade flavonoids and isoflavonoids were investigated for pisatin degradation. Fusarium anguioides and Fusarium avenaceum converted the phytoalexin (1) to the nontoxic 3,6a-dihy-droxy-8,9-methylenedioxypterocarpan (2). 
  Reference    Z. Naturforsch. 33c, 301 (1978); received February 21 1978 
  Published    1978 
  Keywords    Phytoalexin, Pisatin, Fusarium, Degradation, Demethylation 
  Similar Items    Find
 TEI-XML for    default:Reihe_C/33/ZNC-1978-33c-0301_n.pdf 
 Identifier    ZNC-1978-33c-0301_n 
 Volume    33 
2Author    Requires cookie*
 Title    4,7-Dimethoxyindole Derivatives Bearing Alkyl Groups in the Pyrrole Fused Ring: Structure of the Demethylated Compounds Preparation  
 Abstract    G io r g io M a l e s a n i * a n d G io r g io R i g a t t i The alkylation of 4,7-dimethoxyindole and the demethylation of the obtained compounds with anhydrous aluminium chloride in benzene is described. The demethylated derivatives have the structure of 4,7-dioxo-4,5,6,7-tetrahydroindoles. 
  Reference    (Z. Naturforsch. 30b, 954—958 [1975]; received January 31/April l/May 22 1975) 
  Published    1975 
  Keywords    Demethylation, Dialkyl Derivatives, 4, 7-Dimethoxyindole 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0954.pdf 
 Identifier    ZNB-1975-30b-0954 
 Volume    30 
3Author    Klaus-MichaelW. Eltring, W. Olfgang BarzRequires cookie*
 Title    Degradation of 3,9-Dimethoxypterocarpan and Medicarpin by Fusarium proliferatum  
 Abstract    The degradation o f 3,9-dimethoxypterocarpan was investigated in selected strains of Fusarium. Fusarium proliferatum (/'. e. Gibberella fujikuroi (SAW)WR) degrades this substrate via 3-meth-oxy-9-hydroxypterocarpan, 3,9-dihydroxypterocarpan and 2',4',7-trihydroxyisoflavan. During degradation by this organism medicarpin is first demethylated to 3,9-dihydroxypterocarpan. 
  Reference    Z. Naturforsch. 35c, 399—405 (1980); received March 10 1980 
  Published    1980 
  Keywords    Phytoalexins, 3, 9-Dimethoxypterocarpan, Medicarpin, Fusarium, Degradation, Demethylation 
  Similar Items    Find
 TEI-XML for    default:Reihe_C/35/ZNC-1980-35c-0399.pdf 
 Identifier    ZNC-1980-35c-0399 
 Volume    35 
4Author    K.-M Weltring, K. Mackenbrock, W. BarzRequires cookie*
 Title    Demethylation, Methylation and 3'-Hydroxylation of Isoflavones bv Fusarium Fungi  
 Abstract    Several introductionary reactions of isoflavone metabolism by Fusarium fungi are reported. Fu­ sarium avenaceum hydroxylates formononetin in the 3'-position yielding 3',7-dihydroxy-4'-me-thoxyisoflavone (calycosin). 3'-Hydroxylation o f biochanin A to 3/,5,7-trihydroxy-4/-methoxyiso-flavone (pratensein) has been observed with Fusarium oxysporum f. sp. lycopersici and Fusarium oxysporum f. sp. I ini. Depending on the growth medium Fusarium proliferatum metabolises for­ mononetin either by 7-O-methylation or by 4'-0-demethylation. 
  Reference    Z. Naturforsch. 37c, 570—574 (1982); received March 29 1982 
  Published    1982 
  Keywords    Isoflavones, Fusarium, Methylation, Demethylation, 3'-Hydroxylation, Metabolism 
  Similar Items    Find
 TEI-XML for    default:Reihe_C/37/ZNC-1982-37c-0570.pdf 
 Identifier    ZNC-1982-37c-0570 
 Volume    37