title: New guaiane sesquiterpenes and furanocoumarins from Notopterygium incisum.
abstract: In addition to twenty-nine known compounds, two new guaiane sesquiterpenes and two new furanocoumarins were isolated from the chloroform extract of the rhizomes of Notopterygium incisum. The new structures were elucidated by means of spectroscopic methods including 2 D NMR techniques and mass spectrometry to be 8 beta-acetoxy-4 alpha,6 alpha-dihydroxy-1 alpha,5 alpha( H)-guai-9-ene (incisumdiol A, 1), 4 alpha,6 alpha-dihydroxy-1 alpha,5 alpha( H)-guai-9-ene (incisumdiol B, 2), 5-[(2 E,5 Z)-7-hydroxy-3,7-dimethyl-2,5-octadienoxy]psoralene ( 3) and 5-[(2,5)-epoxy-3-hydroxy-3,7-dimethyl-6-octenoxy]psoralene ( 4).
authors.affiliation: Key Laboratory of Brain Functional Genomics, East China Normal University, Shanghai, P. R. China.
authors.forename: Shi-Biao
authors.initials: SB
authors.lastname: Wu
authors.forename: Yun
authors.initials: Y
authors.lastname: Zhao
authors.forename: Hui
authors.initials: H
authors.lastname: Fan
authors.forename: Ying-He
authors.initials: YH
authors.lastname: Hu
authors.forename: Mark T
authors.initials: MT
authors.lastname: Hamann
authors.forename: Jiang-Nan
authors.initials: JN
authors.lastname: Peng
authors.forename: Courtney M
authors.initials: CM
authors.lastname: Starks
authors.forename: Mark
authors.initials: M
authors.lastname: O'Neil-Johnson
authors.forename: Jin-Feng
authors.initials: JF
authors.lastname: Hu
mesh_terms: D019661:Apiaceae / Q000737:chemistry*; D011564:Furocoumarins / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D027343:Rhizome / Q000737:chemistry; D045789:Sesquiterpenes, Guaiane / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D011564:Furocoumarins; D045789:Sesquiterpenes, Guaiane