| Abstract: | The structures of two acid catalysed rearrangement products of taxochinone ( 1 ) have been determined by X-ray analysis. One of the products turned out to be a 20 (10→9) abeo-abietane ( 2 ), the other an optically inactive phenalenone ( 3 ). Crystals of the former compound, C20H26O3, belong to space group P212121 with four molecules per cell and the structure was refined with 879 significant reflexions to R = 0.032. Crystals of the latter compound, C20H22O2, belong to space group P21/c with 12 molecules per cell and the structure was refined with 1823 significant reflexions to R = 0.058. |
