Lignans from bark of the Olea plants. I.
作者:HIROKI TSUKAMOTO、SUEO HISADA、SANSEI NISHIBE
DOI:10.1248/cpb.32.2730
日期:——
Four new lignans, (+)-1-acetoxypinoresinol [(1S, 2R, 5R, 6S)-1-acetoxy-2, 6-bis (4-hydroxy-3-methoxyphenyl)-3, 7-dioxabicyclo [3. 3. 0] octane] (1), (+)-1-hydroxypinoresinol (2), (+)-1-acetoxypinoresinol 4"-O-methyl ether (3) and (+)-1-hydroxypinoresinol 4"-O-methyl ether (4), and two known lignans, (-)-olivil (5) and (+)-cyclo-olivil (6), were isolated from the bark of Olea europaea L. (Oleaceae). Their structures were elucidated on the basis of spectroscopic analysis and chemical evidence. The lignans 1, 2 and 3 were also isolated from the bark of Olea africana MILL. (Olea europaea L. subsp. africana (MILL.) GREEN), and lignans 5 and 6 from the bark of Olea capensis L.
四种新的木脂素,(+)-1-乙酰氧基松脂醇[(1S, 2R, 5R, 6S)-1-乙酰氧基-2, 6-双(4-羟基-3-甲氧基苯基)-3, 7-二氧双环[3.0]辛烷](1)、(+)-1-羟基松脂醇(2)、(+)-1-乙酰氧基松脂醇 4"-O-甲醚(3)和(+)-1-羟基松脂醇 4"-O-甲醚(4)。根据光谱分析和化学证据阐明了它们的结构。还从 Olea africana MILL.(Olea europaea L. subsp. africana (MILL.) GREEN) 树皮中分离出木脂素 1、2 和 3,从 Olea capensis L. (Olea europaea L. subsp. africana (MILL.) GREEN) 树皮中分离出木脂素 5 和 6。