Tetrahedron Letters,Vol.29,No.37,pp 4703-4704,1988 oo40-4039/88 $3.00 + .OO ... DARSTELLUNG VON.NARDOSINON AUS l(lOl-ARISTOLENON-(9) (GANSONGON) ... Gerhard Riicker' und Armin Olbrich' Pharmazeutisches Institut der Universitat Bonn Kreuzbergweg 26, D-5300 Bonn 1 ... Summary-The title compound 1 is formed from l(lO)-aristolenon-(9) (gansongon) (2) by liquid-phase autoxidation in the presence of different phenols. ... Die olige Substanz 2 ...