Chemical Evaluation of Betula Species in Japan. I. Constituents of Betula ermanii.
作者:Hiroyuki FUCHINO、Tetsuya SATOH、Nobutoshi TANAKA
DOI:10.1248/cpb.43.1937
日期:——
The constituents of Betula ermanii CHAM. in Japan were identified as follws. Fresh leaves : 20(S), 24(R)-epoxydammmaran-3β, 11α, 25-triol (1), 3-O-β-D-glucopyranoside of 1 (2), 2'-acetate of 2 (3), 11, 2'-diacetate of 2 (4), dammar-24-en-3β-, 11α-20(S)-triol (5), 3-O-β-D-2-O-acetylglucopyranoside of 5 (6). Outer bark : betulin (7), betulin 3-caffeate (8), oleanolic acid (9). Inner bark : (+)-lyoniresinol 3α-O-α-L-rhamnopyranoside (10), (-)-lyoniresinol 3α-O-β-D-xylopyranoside (11), 9, 9'di-O-feruloyl-(-)-secoisolariciresinol (12), acerogenin E (13), 3, 4, 5-trimethoxyphenol β-D-apiofuranosyl(1→6)-β-D-glucopyranoside (14), 4-(4-hydroxyphenyl)-2-butanol 2-O-β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside (15), (+)-catechine 7-O-β-D-xylopyranoside (16), lupeol (17), monogynol A (18). Root outer bark : lupeol caffeate (19), betulin 3-caffeate (8), oleanolic acid caffeate (20), dammarendiol II 3-caffeate (21). Compounds 2, 3, 4, 6, 19 and 21 are new.
日本桦木(Betula ermanii CHAM.)的成分鉴定如下。鲜叶:20(S),24(R)-epoxydammmaran-3β,11α,25-triol (1),3-O-β-D-吡喃葡萄糖苷 1 (2),2 的 2'-acetate (3),11,2'-diacetate of 2 (4),dammar-24-en-3β-,11α-20(S)-triol (5),3-O-β-D-2-O-acetylglucopyranoside of 5 (6)。外树皮:白桦脂素(7)、白桦脂素 3-咖啡酸酯(8)、齐墩果酸(9)。内树皮 :(+)-lyoniresinol 3α-O-α-L-rhamnopyranoside (10),(-)-lyoniresinol 3α-O-β-D-xylopyranoside (11),9, 9'di-O-feruloyl-(-)-secoisolariciresinol (12),acerogenin E (13),3, 4、5-trimethoxyphenolβ-D-apiofuranosyl(1→6)-β-D-glucopyranoside(14)、4-(4-羟基苯基)-2-丁醇 2-O-β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside(15)、(+)-儿茶素 7-O-β-D-xylopyranoside(16)、羽扇豆醇 (17)、单炔醇 A (18)。根外树皮:羽扇豆醇咖啡酸酯(19)、白桦林 3-咖啡酸酯(8)、齐墩果酸咖啡酸酯(20)、达玛姻二醇 II 3-咖啡酸酯(21)。化合物 2、3、4、6、19 和 21 是新化合物。