A novel 1:1 complex of potassium mikanin-3-O-sulfate with methanol.

  title={A novel 1:1 complex of potassium mikanin-3-O-sulfate with methanol.},
  author={Ren‐Wang Jiang and Z D He and Paul Pui-Hay But and Yiu-Man Chan and S C Ma and Tcw Mak},
  journal={Chemical \& pharmaceutical bulletin},
  volume={49 9},
Mikanin-3-O-sulfate (1), in the form of its potassium salt, together with mikanin (2) and alpinetin (3) were isolated from Mikania micrantha. The crystal structures of K(1) x CH3OH, 2 and 3 x H2O were established by X-ray crystallography. The potassium ions in K(1) x CHO3H are bridged by O5, O7 and O8 to form a chain of face-sharing KO8 coordination polyhedra, from which the aglycon units are outstretched to form a polymeric molecular column. Adjacent molecular columns are linked by pi-pi… 

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