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Gibbs test

Two isomers of morusin monomethyl ether, 2 -0-methylmorusin (24 e) and 4 -0-methylmorusin (24 f), are formed on methylation of 24 with ethereal diazomethane in isopropyl alcohol and could be distinguished from each other by the Gibbs test. When a solution of 24 e was irradiated, starting material was recovered unchanged, but irradiation of 24f, gave morusinhydroperoxide monomethyl ether (49a). The structure of 49 was established as follows. The UV spectrum (X- ax 280 and 335 nm) resembled that of compound A (31) rather than that... [Pg.102]

See other pages where Gibbs test is mentioned: [Pg.325]    [Pg.6]    [Pg.74]    [Pg.87]    [Pg.89]    [Pg.91]    [Pg.91]    [Pg.93]    [Pg.265]    [Pg.51]    [Pg.228]    [Pg.76]    [Pg.209]    [Pg.109]    [Pg.489]    [Pg.410]    [Pg.311]    [Pg.94]    [Pg.100]    [Pg.116]    [Pg.116]    [Pg.25]    [Pg.29]    [Pg.55]    [Pg.56]    [Pg.228]   
See also in sourсe #XX -- [ Pg.22 , Pg.489 ]

See also in sourсe #XX -- [ Pg.489 ]

See also in sourсe #XX -- [ Pg.94 , Pg.100 , Pg.102 , Pg.116 ]

See also in sourсe #XX -- [ Pg.25 , Pg.29 , Pg.55 , Pg.56 ]



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