SYNTHETIC TRANSFORMATIONS OF ISOQUINOLINE ALKALOIDS: 1-(<i>N</i>-ALKYL-1,2,3-TRIAZOL-4-YL)-6,18-<i>endo</i>-ETHENODIHYDROTHEBAINEHYDROQUINONES AND TRIAZOLYLNAPHTHOHYDROQUINONE-CONTAINING BENZOFUROAZOCINES FROM THEBAINE
DOI:
https://doi.org/10.1007/3745Keywords:
benzofuroazocines, dihydrothebainehydroquinone, thebaine, 1, 2, 3-triazoles, Cu(I)-catalyzed reactions, retro-cleavageAbstract
1-Ethynyl-6,18-endo-ethenodihydrothebainehydroquinone reacted with azides in the presence of CuSO4·5H2O and sodium ascorbate in DMF, forming the respective 1-(N-alkyl(arylalkyl)triazol-4-yl)-6,18-endo-ethenodihydrothebainehydroquinones, which underwent retrodiene cleavage upon heating in DMF, forming functionalized tetrahydrofuro[4,3,2-fg][3]benzazocines containing naphthohydroquinone and 1,2,3-triazolyl substituents.
Authors: Valentina T. Bauman, Jamsranjav Ganbaatar, Elvira E. Shults*