Stereocontrolled syntheses of novel styryl lactones, (+)-goniodiol, (+)-goniotriol, (+)-8-acetylgoniotriol, (+)-goniofufurone, (+)-9-deoxygoniopypyrone, (+)-goniopypyrone, and (+)-altholactone from common intermediates and cytotoxicity of their congeners
Concise syntheses of (+)-goniodiol, (+)-goniotriol, (+)-8-acetylgoniotriol, (+)-goniofufurone, (+)-9-deoxygoniopypyrone, (+)-goniopypyrone, and (+)-altholactone and their congeners from chiral lactonic aldehydes 27 and 36 as commonintermediates are described. The key features in the syntheses are based on the in situ generation of unstable aldehydes 27 and 36 followed by their chemoselective reaction