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  • 1
    Electronic Resource
    Electronic Resource
    Solanum Alkaloids, 139 - Photolysis of N-Chlorospirosolanes (1997)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1997 (1997), S. 1589-1592 
    Details
    ISSN: 0947-3440
    Keywords: Photolysis ; N-Chlorospirosolanes, photolysis of ; 23-Chloro- and 23,23-dichlorospirosolanes ; Steroids ; Alkaloids ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: UV irradiation of N-chlorosoladulcidine (2) in trifluoroacetic acid, followed by separation and hydrolysis of the obtained 3-O-trifluoroacetates affords (23R)-23-chlorosoladulcidine (5) and 23,23-dichlorosoladulcidine (7). Similar treatment of N-chlorotomatidine (9) affords 23,23-dichloro-22-isotomatidine (12).
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199719970741
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  • 2
    Electronic Resource
    Electronic Resource
    Partial Synthesis of Nitrogenous Brassinosteroid Analogues with 22,26-Epiminocholestane and Spirosolane Skeleton (1994)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1994 (1994), S. 1143-1147 
    Details
    ISSN: 0170-2041
    Keywords: Bassinosteroids ; Steroids ; Alkaloids ; Solasodine ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Starting with the known (22S,25R)-16β-acetoxy-N-acetyl-22,26-epiminocholest-5-en-3β-ol (4), which has been prepared from the Solanum steroid alkaloid solasodine (3), we synthesized the nitrogenous brassinosteroid analogues (22S,25R)-2α,3α,16β-trihydroxy-22,26-epimino-5α-cholestan-6-one (11), (25R)-2α,22α-dihydroxy-5α,22αN-spirosolan-6-one (13), (22S,25R)-2α,3α,16β-trihydroxy-22,26-epimino-6,7-seco-5α-cholestano-6,7-lactone (15), and (25R)-2α-3α-dihydroxy-6,7-seco-5α,22αN-spirosolano-6,7-lactone (18) as well as some of their derivatives.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199419941115
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