The first stereoselective synthesis of 2α,3α-epoxy-9β-benzoyloxy-β-agarofuran (3) and 2,3-dehydro-4β,12-epoxy-9β-benzoyloxy-β-dihydroagarofuran (4) from (-)-carvone in 13 steps, respectively, has been described. In addition, the synthesis of 2,3-dehydro-4β,9β-dihydroxy-β-dihydroagarofuran (13) has also been reported. By the reduction of 4 to give 13, the 4β,12-epoxy configuration of 4 was established.
首次立体选择性合成了 2α,3α-环氧-9β-苯甲酰氧基-β-香茅呋喃 (3) 和 2,3-脱氢-4β,12-环氧-9β-苯甲酰氧基-β-二氢香茅呋喃 (4)。此外,还报道了 2,3-脱氢-4β,9β-二羟基-β-二氢香茅呋喃(13)的合成。通过还原 4 得到 13,确定了 4 的 4β,12-环氧构型。