... Perkin Trans (1992) 887-893 Masayoshi Tsubuki, Kazuo Kanai, Hiromasa Nagase, and Toshio Honda Stereocontrolled Syntheses of Novel Styryl Lactones, (+)-Goniodiol, (+)-Goniotriol, (+)8-Acetylgoniotriol, ... root and stem bark of Goniothalamus howii Merr (Annonaceae) This compound blocked the cell cycle transition from G phase to S phase and inhibited the activity of topoisomerase II both inside and ... (+)-Gonipypyrone, and (+)-Altholactone from Common Intermediates and Cytotoxicity of Their congeners, Tetrahedron 55 (1999) 2493-2514 Tonny K M Shing and Vicint W-F Tai - Facile and Enantiospecific...