Synthesis of 7a-aryl-5-<i>t</i>-butyl-3-methyleneoctahydrobenzofuran possessing partial skelotons of some santonin analogue and furanolignans by intramolecular radical cyclisation reaction
作者:Marappagounder Periasamy、Alagusundaram Ponnuswamy
DOI:10.1002/jhet.5570440422
日期:2007.7
octahydrobenzofuran derivatives (1c-6c) possessing the partial skeletons of santonin (7), 11,13-dehydroisohyposantonin (8), dihydrosesamin (9) and lariciresinol (10) have been synthesised by intramolecular radical cyclisation in good yield via the precursors viz., the trans diaxial bromopropynyl ethers (1b-6b) obtained in highly regio/stereoselective manner.
双环octahydrobenzofuran衍生物(1C-6C具有山道年的部分骨架)(7),11,13-dehydroisohyposantonin(8),dihydrosesamin(9)和落叶松(10)已经通过以良好的收率的分子内环化基团的合成通过前体即。,以高度区域/立体选择性的方式获得的反式双轴溴丙炔醚(1b-6b)。