目的 研究苦竹Pleiobtastus amarus 嫩茎的化学成分.方法 采用色谱分离技术进行分离和纯化,并根据谱学数据鉴定化合物的结构.结果 从苦竹嫩茎的甲醇提取物中分离得到15个酚类化合物,分别鉴定为苜蓿素(1)、芹菜素(2)、5,7,2',4',6'-五羟基黄酮(3)、5,7-二羟基-3',4',5'-三羟基黄酮(4)、金合欢素(5)、木犀草素(6)、蓟黄素(7)、对羟基苯甲醛(8)、邻羟基苯甲酸(9)、反式对羟基肉桂酸(10)、2,4-二羟基苯甲醛(11)、没食子酸(12)、没食子酸甲酯(13)、questin(14)和isorhodoptilometrin(15).结论 化合物2～7、10～13为首次从苦竹中分离得到,化合物14和15为首次从苦竹属植物中分离得到.

Objective To study the chemical constituents from the stems of Pleioblastus amarus. Methods The compounds were isolated and purified by means of chromatographic techniques and their structures were identified on the basis of spectral data. Results Fifteen known phenolic compounds were isolated in the methanol extract from the dry stems of P. amarus and thire structures were identified as tricin (1), apigenin (2), 5,7,2',4',6'-pentamethoxyflavone (3), 5,7-dihydroxy-3',4',5'-trimethoxyflavone (4), acacetin (5), luteolin (6), cirsimaritin (7), p-hydroxybenzaldehyde (8), 2-hydroxybenzoic acid (9), trans-p-hydroxycoumaric acid (10), 2,4- dihydroxybenzaldehyde (11), gallic acid (12), methyl gallate (13), questin (14), and isorhodoptilometrin (15). Conclusion Compounds 2—7 and 10—13 are first obtained from this plant; Compounds 14 and 15 are first isolated from the plants of Pleioblastus Nakai.

国家自然科学基金资助项目(31200262);浙江省重中之重林学一级学科开放基金(KF201302);浙江农林大学人才启动项目(2014FR066)