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  • 1970-1974  (11)
Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 105 (1974), S. 213-219 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Reduction of “9.10-dehydro-indolinocodeinone” (2 b) with sodium borohydride yields two isomeric carbinols5 a and5 b. Their structures were established on the basis of NMR-spectroscopy and by conversion to known compounds.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 105 (1974), S. 340-345 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Reaction of “9.10-Dehydro-indolinocodeine-methoperchlorate” (4) with sodium methoxide solution yields thedes-base (7R)-7-methoxyneopine-methine (5 a). Its structure was established on the basis of spectroscopic methods.Hofmann degradation of5 a affords the so far unknown 3.6-dimethoxy-phenanthro[4.5—bcd]furane (7).
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 103 (1972), S. 1066-1077 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Beim Erhitzen von 14-Brom-codeinon-dimethylacetal (1) in absol. Methanol mit einer äquivalenten Menge Na2CO3 entstehen die drei isomeren Methoxycodeinon-acetale3, 4 und5 sowie die beiden Indolino-codeinonderivate6 und7. Die Strukturen und Konfigurationen der Verbindungen3–6 werden auf Grund der NMR- und IR-Spektren sowie durch Umwandlung in bekannte Verbindungen bewiesen.
    Notes: Abstract 14-Bromocodeinone dimethyl acetal (1) reacts in methanol containing sodium carbonate (0.5 moles) to give the three isomeric methoxycodeinone acetals3, 4, and5 besides the indolino-codeinones6 and7. The structures and configurations of3–6 were established on the basis of NMR- and IR-spectroscopy and by conversion to known compounds.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 102 (1971), S. 1101-1109 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Aus 14-Bromcodeinon-dimethylacetal (1)** entsteht bei der Einwirkung von methanol. KOH die bromfreie Acetalbase2 a, die durch Säuren zum Keton2 b hydrolysiert wird. Die katalyt. Hydrierung beider Basen bzw. ihrer Methosalze verläuft nicht gleichartig; sie führt bei2 a zu einem Gemisch der Basen4 a und3 d, bei2 b zu5 und bei den entsprechenden Methosalzen zu Dihydrocodeinon-dihydromethin (3 a) bzw. dessen Dimethylacetal.
    Notes: Abstract 14-Bromocodeinone dimethyl acetal (1) loses HBr on treatment with methanolic KOH forming the acetal base2 a, which is hydrolysed by acids to the ketone2 b. The two bases and their N-methyl derivatives behave differently on catalytic hydrogenation:2 a yields a mixture of bases4 a and3 d, 2 b yields5, and the corresponding N-methyl derivatives yield dihydrocodeinone-dihydromethine (3 a) and its dimethyl acetal respectively.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 102 (1971), S. 530-537 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Bei der Reaktion von 14-Brom-codeinondimethylacetal (1) mit Methanol in Gegenwart von wasserfr. Na2CO3 wurden 7-Methoxy-neopinondimethylacetal (2 b) und 14-Methoxy-codeinondimethylacetal (6 b) erhalten. Die Strukturen der neuen Verbindungen werden bewiesen.
    Notes: Abstract Reaction of 14-bromo-codeinone dimethyl acetal (1) with methanol in presence of Na2CO3 yields 7-methoxy-neopinonedimethyl acetal (2 b) and 14-methoxy-codeinone dimethyl acetal (6 b). The structures of the new compounds are proved.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 102 (1971), S. 775-780 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Durch Methylierung von Δ8(14)-7-Oxo-thebainon-methaperchlorat (1) wird 4-O-Methyl-salutaridin-methoperchlorat (2) erhalten, das beimHofmannabbau das Methin3 liefert. Einwirkung von konz. HCl auf2 bei Raumtemp. führt zu 7-Hydroxy-4-O-methyl-7.8-dehydro-metathebainon-methoperchlorat (4 a), aus dem beim Erwärmen mit 10n-HClO4 7-Hydroxy-4-O-methyl-morphothebain-methoperchlorat (5) entsteht. Die Strukturen von2, 3, 4 a und5 werden bewiesen.
    Notes: Abstract Methylation of Δ8(14)-7-oxo-thebainone-methoperchlorate (1) yields 4-O-methyl-salutaridine-methoperchlorate (2), which by action of 1n-NaOH is degradated to methine3. Acidic hydrolysis of2 at room temperature yields 7-hydroxy-4-O-methyl-7.8-dehydro-metathebainone-methoperchlorate (4 a), which by heating in 10n-HClO4 solution can be rearranged to 7-hydroxy-4-O-methyl-morphothebaine-methoperchlorate (5). The structures of the new compounds2, 3, 4 a, and5 are proved.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 102 (1971), S. 770-774 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Saure Hydrolyse von 7-Methoxy-neopinondimethylacetal-methoperchlorat (1) liefert je nach Reaktionsbedingungen Δ8(14)-7-Oxo-metathebainon-methoperchlorat (9), 7-Methoxy-7.8-dehydro-metathebainon-methoperchlorat (13 a) oder 7-Hydroxy-morphothebain-methoperchlorat (14).
    Notes: Abstract Dependent on reaction conditions acidic hydrolysis of 7-methoxy-neopinone-dimethylacetal-methoperchlorate (1) yields Δ8(14)-7-oxo-metathebainone-methoperchlorate (9), 7-methoxy-7.8-dehydro-metathebainone-methoperchlorate (13 a) or 7-hydroxy-morphothebaine-methoperchlorate (14), resp.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 101 (1970), S. 362-374 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Contrary to thebaine base (1), which on treatment with bromoacetamide in anhydrous methanol is known to give 14-bromocodeinone dimethylketal (2 a), thebaine metho methylsulfate yields the metho salt of the isomeric 7-bromoneopinone dimethylketal (3 a). From the ketone methoperchlorate (3 b) on heating with water or in buffered solution the methoperchlorate of 7-oxo-thebainone (6) and HBr are formed. However, in strongly acidic solutions3 a as well as3 b give 7-bromo-7,8-dehydrometathebainone methoperchlorate (7 a), isomeric with3 b, a key intermediate, from which the diketone methoperchlorates8 a and8 b, the methine9, the methyl enolates10 a and10 b, and finally the 7-bromo-morphothebaine derivatives12 a–d and13 can be obtained.
    Notes: Zusammenfassung Thebain-metho-methylsulfat liefert mit Bromacetamid in absol. Methanol das Methosalz des 7-Brom-neopinon-dimethylketals (3 a) im Gegensatz zur Thebain-Base (1), die das isomere 14-Bromcodeinon-dimethylketal (2 a) ergibt. Aus dem Ketonmethoperchlorat3 b entstehen beim Erwärmen in Wasser oder gepufferter Lösung das Methoperchlorat des 7-Oxo-thebainons (6) und HBr. In stark saurer Lösung hingegen gelangt man von3 a oder3 b zu dem mit3 b isomeren 7-Brom-7,8-dehydrometathebainon-methoperchlorat (7 a). Von diesem ausgehend, wurden die Diketon-methoperchlorate8 a und8 b sowie das Methin9 gewonnen, weiters auch die entsprechenden Methylenolate10 a und10 b. Über7 a führte auch der Weg zu den 7-Brom-morphothebain-derivaten12 a–d und13.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 101 (1970), S. 1253-1262 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Action of sodium methoxide solution upon 7-bromoneopinonedimethylacetal-methoperchlorat* (1) yields twodes-bases, (10S)-methoxycodeinonedimethylaeetal-Δ9(14)-methine (3 d) and 10-methoxyneopinonedimethylacetal-methine (4 d). The structures of the new compounds3 d and4 d are proved and the mechanism of reaction is elucidated.
    Notes: Zusammenfassung Aus 7-Bromneopinondimethylacetal-methoperchlorat* (1) werden bei der Einwirkung von Natriummethylatlösung die bisher nicht beschriebenenDes-Basen, (10S)-methoxycodeinonedimethylaeetal-Δ9(14)-methine (3 d) und 10-Methoxy-neopinondimethylacetal-methin (4 d) gebildet. Die Strukturen von3 d und4 d werden bewiesen, der Reaktions-mechanismus geklärt.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 101 (1970), S. 1215-1222 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract The diketo compounds formed in the hydrolysis of 14-bromocodeinone (1) and 7-bromoneopinone methoperchlorate, resp., have been shown to possess structure and configuration of Δ8(14)-7-oxothebainone (5) and its methoperchlorate, resp. The quinoxaline derivative7, obtained by condensation of5 with o-phenylenediamine, yields two dihydro compounds (8 and10) diastereomeric at C-6a.8 has been found to be the enantiomer of the condensation product obtained from sinomeninone (6) and o-phenylenediamine.
    Notes: Zusammenfassung Es wird nachgewiesen, daß den aus 14-Brom-codeinon (1)* bzw. 7-Brom-neopinon-methoperchlorat durch einfache Hydrolyse entstehenden Diketoverbindungen die Struktur und Konfiguration von Δ8(14)-7-Oxo-thebainon (5) bzw. des entsprechenden Methoperchlorats zukommt. Das durch Kondensation von5 mit o-Phenylendiamin entstehende Chinoxalinderivat7 gibt zwei am C-6a diastereomere Dihydroverbindungen (8 und10), wobei8 das Enantiomere des Kondensationsproduktes von Sinomeninon (6) und o-Phenylendiamin darstellt.
    Type of Medium: Electronic Resource
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