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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 136 (1952), S. 194-199 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 631 (1960), S. 111-116 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch katalytische Druckhydrierung von Chromeno-[3.4:b]-chromon (I) werden erstmalig hergestellt: 5a.11a-Dihydro-5-hydroxy-chromeno-[3.4:b]-chromen (II), 5a.11a-Dihydro-Δ5(5a)-chromeno-[3.4:b]-chromen (IV), 5a.11a-Dihydro-chromeno-[3.4:b]-chromon (V) und 5a.11a-Dihydro-chromeno-[3.4:b]-chromen (VII).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 587 (1954), S. 16-37 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dehydrorotenon läßt sich unter Druck katalytisch zu einem Gemisch hydrieren, welches in der Hauptsache aus d-Dihydroepirotenon besteht und nur wenig Dihydrorotenon enthält; nach Epimerisierung dieses Gemisches (mit K2CO3 in Aceton) überwiegt in dem entstandenen Gleichgewichtsgemisch Dihydrorotenon.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 685 (1965), S. 167-176 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der katalytischen Hydrierung von Khellin (II) mit Pt in Methanol entsteht 7-Hydroxy-5.8-dimethoxy-2-methyl-6-äthyl-chromon (III), mit Pd(OH)2/BaSO4 in Aceton 5.8-Dimethoxy-2-methyl-4′.5′-dihydro-furo[3′.2′:6.7]chromanon-(4) (V). Daraus läßt sich 4-Hydroxy-5.8-dimethoxy-3-acetoxy-2-methyl-4′.5′-dihydro-furo[3′.2′:6.7]chroman (VIIIa) darstellen, dessen Oxydation 5.8-Dimethoxy-3-acetoxy-2-methyl-4′.5′-dihydro-furo[3′.2′:6.7]chromanon-(4) (IX) ergibt.  -  Bei der Reduktion von II mit LiAlH4 in Tetrahydrofuran bei  - 80° entsteht 5.8-Dimethoxy-2-methyl-furo[3′.2′:6.7]chromanon-(4) (X), welches sich durch Dehydrierung mit Chloranil wieder in Khellin zurückverwandeln läßt.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 749 (1971), S. 68-89 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Trypanocide Diamidines of 2-Phenylbenzofuran, 2-Phenylindene and 2-PhenylindoleDiamidines with the amidino-groups in 4′.5- and 4′.6-position of the ring skeletons of 2-phenylbenzofuran (4e, 5e, 3e), of 2-phenylindene (10d, 16a, 16b, 16c, 16d), of 2-phenyl-2.3-dihydroindene (17b) and of 2-phenylindole (18l, 18n, 18p, 19d, 19e) are synthesized; the 3′.5- and 3′.6-diamidines 18m, 18o of 2-phenylindole are also prepared. - The activity of 4′.5-diamidine 4e of 2-phenylbenzofuran against Trypanosoma rhodesiense surpasses all others. The spectrum of activity of diamidines of 2-phenylindene resembles that of the diamidines of 2-phenylthionaphthene with the main activity against T. gambiense. The 4′.6-diamidine 18n of 2-phenylindole exhibits the highest and rarely found activity against T. congolense.
    Notes: Es werden Diamidine synthetisiert, welche die Amidino-Gruppen in 4′.5- bzw. 4′.6-Stellung der Ringgerüste des 2-Phenyl-benzofurans (4e, 5e und 3e), des 2-Phenyl-indens (10d, 16a, 16b, 16c, 16d), des 2-Phenyl-2.3-dihydro-indens (17b) sowie des 2-Phenyl-indols (18l, 18n, 18p, 19d, 19e) enthalten; von letzterem werden außerdem die 3′.5- bzw. 3′.6-Diamidine (18m bzw. 18o) dargestellt. - Das 4′.5-Diamidin 4e des 2-Phenyl-benzofurans besitzt eine überragende Wirksamkeit gegen Trypanosoma rhodesiense. Die Diamidine des 2-Phenylindens haben ein Wirkungsspektrum wie jene des 2-Phenyl-thionaphthens mit dem Schwerpunkt gegen T. gambiense, und das 4′.6-Diamidin 18n des 2-Phenyl-indols besitzt eine überragende, seltene Wirksamkeit gegen T. congolense.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Trypanocidal Diamidines with Four Rings in One or Two Ring SystemsThe trypanocidal properties of diamidines of type A are diminished by rigidity of the skeleton and by its enlargement, as was shown by preparation of diamidines with the following skeletons: 10H-[1]benzothieno[3,2-b]indole (1c); chrysene (4g); cis-4b,5,6,10b,11,12-hexa-hydrochrysene (8g); 2-(2-benzofuranyl)indole (10c, 11c); 2-naphthylbenzo[b]thiophene (12d), 1-phenylnaphtho[2,1-b]thiophene (18c); bis(2-benzofuranyl)-methane (24d), -ethylenes (25c, 28c, 31c) and -ethanes (29b, 30b).
    Notes: Die trypanociden Eigenschaften der Diamidine vom Typ A werden durch Starrheit des Molekülgerüstes und durch seine Flächenvergrößerung beeinträchtigt, wie sich durch die Darstellung von Diamidinen mit folgenden Gerüsten zeigen ließ: 10H-[1]Benzothieno-[3,2-b]indol (1c); Chrysen (4g); cis-4b,5,6,10b,11,12-Hexahydrochrysen (8g); 2-(2-Benzofuranyl)indol (10c, 11c); 2-Naphthylbenzo[b]thiophen (12d); 1-Phenylnaphtho[2,1-b]thiophen (18c); Bis(2-benzofuranyl)-methan (24d), -äthylene (25c, 28c, 31c) und -äthane (29b, 30b).
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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