摘要
Three new cyclohexene epoxides,polysyphoside A,B and C,along with a known compound crotepoxide(4),were isolated from Piper polysyphorum C.DC.Based on spectroscopic analysis,their structures were established as 1-benzoyloxymethylene-2-hydroxy-3-benzoyloxy-1,6- epoxycyclohex-4-ene(1),1-benzoyloxymethylene-2-hydroxy-5-benzoyloxy-1,6-epoxycyclohex-3-ene (2)and 2-hydroxy-3-benzoyloxymethylene-5-benzoyloxy-1,6-epoxycyclohex-3-ene(3),respectively.It was the first time that(1),(2)and(3)had been isolated from a natural source.
从樟叶胡椒中分离到三个新的环氧环己烯类化合物,樟叶环氧素 A,樟叶环氧素 B 和樟叶环氧素 C。另有一个已知化合物巴豆环氧素。经光谱鉴定,其结构分别为1S,2S,3R,6S-1-苯甲酰氧亚甲基-2-羟基-3-苯甲酰氧基-1,6-环氧环己-4-烯(1),rel-1S,2R,5S,6R-1苯甲酰氧亚甲基-2-羟基-5-苯甲酰氧基-1,6-环氧环己-3-烯(2)和 rel-1S,2R,5S,6R-2-羟基-3-苯甲酰氧亚甲基-5-苯甲酰氧基-1,6-环氧环己-4-烯(3)。化合物(1),(2),(3)为首次从天然资源中分离得到。
