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  • 1
    Electronic Resource
    Electronic Resource
    Synthese des Lycopodium-Alkaloids rac-Lucidulin aus Hexahydro-7-methylchinolin (1984)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1984 (1984), S. 1519-1528 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of the Lycopodium Alkaloid rac-Luciduline from Hexahydro-7-methylquinolineThe 1,4 addition of malonic acid to the eneimine functional group of 2 leads to diastereomeric imines which via disproportionation can be transformed into the pyridine derivative 9. From 9 the ester 5b is obtained stereoselectively. Oxidation of 5b with potassium permanganate and crown ether yields the lactam ester 15. The cyclization and transformation of 15 into rac-luciduline (1) is described. 5b can also be obtained in a simple, nonstereoselective synthesis from the ketone 10.
    Notes: Durch 1,4-Addition von Malonsäure an die Eniminfunktion in 2 entstehen diastereomere Imine, die sich durch Disproportionierung in das Pyridinderivat 9 umwandeln lassen. Stereoselektiv wird daraus der Ester 5b gewonnen, der mit Kaliumpermanganat und Kronenether den Lactamester 15 liefert. Die Cyclisierung und Umwandlung von 15 zum rac-Lucidulin (1) ist beschrieben. Der Ester 5b wird in einer einfachen, nicht stereoselektiven Synthese auch aus dem Keton 10 erhalten.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198419840812
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  • 2
    Electronic Resource
    Electronic Resource
    Synthese des Lycopodium-Alkaloids rac-α-Obscurin durch 1,3-Anellierung eines Enimins (1983)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 220-225 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of the Lycopodium-Alkaloids rac-α-Obscurin through 1,3-Anullation of an EnimineAcid catalysed 1,3-annulation of 1,2,3,4-tetrahydro-6-methyl-2-oxopyridine (1) to the enimine 3, followed by methylation, provides a new regio and stereoselective route to rac-α-obscurine (5). Reduction of rac-N-demethyl-α-obscurine with LiAlH4 yields rac-lycodine (11) and rac-deacetyl-flabellidine (9). A new pathway for the biogenesis of the β-amino-imine 9 is suggested.
    Notes: Die säurekatalysierte 1,3-Anellierung von 1,2,3,4-Tetrahydro-6-methyl-2-oxopyridin (1) an das Enimin 3 liefert nach anschließender Methylierung regio- und stereoselektiv rac-α-Obscurin (5). Reduktion von rac-N-Desmethyl-α-obscurin (4) mit Lithiumaluminiumhydrid führt zur Bildung von rac-Lycodin (11) und rac-Desacetylflabellidin (9). Für das β-Amino-Imin 9 wird ein neuer Biogeneseweg vorgeschlagen.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198319830206
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  • 3
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    (Table 1) Mineralogy at DSDP Leg 79 Holes (1984)
    PANGAEA
    In:  Supplement to: Schumann, Dieter (1984): Mineralogy of Cenozoic sediments cored during Deep Sea Drilling Project Leg 79 as determined by X-ray diffraction. In: Hinz, K; Winterer, EL; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Gov. Printing Office), 79, 395-398, https://doi.org/10.2973/dsdp.proc.79.110.1984
    Details
    Publication Date: 2024-01-19
    Description: Four sites in the region of the Mazagan Plateau off northwest Africa were drilled during Leg 79 of the Deep Sea Drilling Project. Bulk mineralogy and clay mineralogy were analyzed from the Cenozoic sediments recovered from the four sites.
    Keywords: 79-544A; 79-544B; 79-545; 79-546; 79-547; 79-547A; Apatite; Calcite; Chlorite; Clay minerals; Deep Sea Drilling Project; Dolomite; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Feldspar; Glomar Challenger; Gypsum; Halite; Illite; Kaolinite; Kaolinite+Chlorite; Latitude of event; Leg79; Lithologic unit/sequence; Longitude of event; Mixed layer clay minerals; North Atlantic/PLATEAU; Opal-CT; Palygorskite; Pyrite, FeS2; Quartz; Sample code/label; Sepiolite; Smectite; X-ray diffraction (XRD); X-ray diffraction TEXTUR, clay fraction
    Type: Dataset
    Format: text/tab-separated-values, 1735 data points
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    DATA PANGAEA
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