title: [A new natural product from root of Angelica dahurica cv. Qibaizhi].
abstract: OBJECTIVE
  To study the chemical constituents of the root of Angelica dahurica cv. Qibaizhi.
  
  
  METHODS
  The compounds were isolated and purified by the methods of solvent extraction and chromatographic technique, and their structures were identified on the basis of the analyses of spectral data.
  
  
  RESULTS
  Twenty-seven compounds were obtained and identified as isoimperatorin (1), alloisoimperatorin (2), oxypeucedanin hydrate (3), byakangelicin (4), alloimperatorin (5), beta-sitosterol (6), dibutylphthalate (7), 6-(3,3-dimethylallyloxy) -7-hydroxycoumarin {7-hydroxy-6-[ (3-methyl-2-butenyl) oxy] -coumarin, 8}, xanthotoxol (9), 5-hydroxy-8-methoxypsoralen ( 5-hydroxyxanthotoxin, 10), smyrindiol (11), umbelliferone (12), bergapten (13), imperatorin (14), phellopterin (15), isoimpinellin (16), 6-acyl-7-methoxycoumarin (17), psoralen (18), isoscopletin (19), scoparone (20), xanthotoxin (21), angelol A (22), oxypeucedanin ethanolate (oxypeucedanin hydrate-3"-ethyl ether, 23), dehydrogeijerin (pablohopin, 24) , ulopterol (25), heraclenol (26), and pabulenol (27), respectively.
  
  
  CONCLUSIONS
  Compound 8 was a new natural product and the above-mentioned all the compounds except for compounds 1, 3 and 14 were isolated from the root of A. dahurica cv. Qibaizhi for the first time.
authors.affiliation: Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
authors.forename: Aihong
authors.initials: A
authors.lastname: Zhao
authors.forename: Xiuwei
authors.initials: X
authors.lastname: Yang
authors.forename: Xinbao
authors.initials: X
authors.lastname: Yang
authors.forename: Jianxun
authors.initials: J
authors.lastname: Liu
authors.forename: Qiuling
authors.initials: Q
authors.lastname: Wang
authors.forename: Wenquan
authors.initials: W
authors.lastname: Wang
mesh_terms: D029969:Angelica / Q000737:chemistry*; D002681:China; D003374:Coumarins / Q000737:chemistry / Q000302:isolation & purification; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000302:isolation & purification; D011564:Furocoumarins / Q000737:chemistry / Q000302:isolation & purification; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry*
chemical_list: D003374:Coumarins; D004365:Drugs, Chinese Herbal; D011564:Furocoumarins; C021768:xanthotoxol; C018145:scoparone; C031534:imperatorin