Investigation of the dynamics of the conformational transitions of dimeric isoquinoline alkaloids by nmr spectroscopy and molecular mechanics

The conformational dynamics of the dimeric isoquinoline alkaloid turconidine has been investigated by the methods of NMR spectroscopy and molecular mechanics. The main conformational states and the trajectories of their mutual transitions have been established. A high lability of the molecule and the predominant state of the dimer in three of the eight possible conformations with respect to the ether bond have been shown.Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 285–289, March-April, 1995. Original article submitted November 28, 1994.