title: Alkaloids from Portulaca oleracea L.
abstract: Five alkaloids (oleraceins A, B, C, D and E) were isolated from Portulaca oleracea L., and their structures determined by spectroscopic methods as 5-hydroxy-1-p-coumaric acyl-2,3-dihydro-1H-indole-2-carboxylic acid-6-O-beta-D-glucopyranoside, 5-hydroxy-1-ferulic acyl-2,3-dihydro-1H-indole-2-carboxylic acid-6-O-beta-D-glucopyranoside, 5-hydroxy-1-(p-coumaric acyl-7'-O-beta-D-glucopyranose)-2,3-dihydro-1H-indole-2-carboxylic acid-6-O-beta-D-glucopyranoside, 5-hydroxy-1-(ferulic acyl-7'-O-beta-D-glucopyranose)-2,3-dihydro-1H-indole-2-carboxylic acid-6-O-beta-D-glucopyranoside and 8,9-dihydroxy-1,5,6,10b-tetrahydro-2H-pyrrolo[2,1-a]isoquinolin-3-one, respectively.
authors.affiliation: Department of Biological Science and Biotechnology, Laboratory of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China.
authors.forename: Lan
authors.initials: L
authors.lastname: Xiang
authors.forename: Dongming
authors.initials: D
authors.lastname: Xing
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Rufeng
authors.initials: R
authors.lastname: Wang
authors.forename: Yi
authors.initials: Y
authors.lastname: Ding
authors.forename: Lijun
authors.initials: L
authors.lastname: Du
mesh_terms: D000470:Alkaloids / Q000032:analysis* / Q000737:chemistry*; D015394:Molecular Structure; D031822:Portulaca / Q000737:chemistry*
chemical_list: D000470:Alkaloids