CYCLIZATION REACTION THROUGH OXIRANE RING CLEAVAGE OF 9,10-EPOXYHUMULA-2,6-DIEN-13-AL. SELECTIVE FORMATION OF 3,6-SECOPROTOILLUDANE AND BICYCLOHUMULANE SKELETONS
摘要:
9,10-Epoxyhumula-2,6-dien-13-al gave 3,6-secoprotoilludane derivatives by treatment with TMSOTf and a bicyclohumulane derivative by BF3·OEt2 selectively in each case.