title: [Studies on circular dichroism of diterpenoids from Mallotus anomalus and sesquiterpenoid tussilagone].
abstract: This paper reports the circular dichroism and octant rule projection of 5 diterpenoids from Mallotus anomalus (compounds 1-5) and 3 sesquiterpenoids tussilagones (compounds 6-8): they are new compounds. Using ketone octant rule, planar cyclohexenone rule, beta, gamma-unsaturated ketone rule and Harada rule, the nature of A/B and B/C ring fusion was determined, thus, their absolute configurations were assigned.
authors.affiliation: Shanghai Institute of Materia Medica, Academia Sinica.
authors.forename: J F
authors.initials: JF
authors.lastname: Mi
authors.forename: R S
authors.initials: RS
authors.lastname: Xu
authors.forename: Y P
authors.initials: YP
authors.lastname: Yang
authors.forename: P M
authors.initials: PM
authors.lastname: Yang
mesh_terms: D002942:Circular Dichroism; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D008968:Molecular Conformation; D012717:Sesquiterpenes; D013729:Terpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D004224:Diterpenes; D004365:Drugs, Chinese Herbal; D012717:Sesquiterpenes; D013729:Terpenes; C054337:tussilagone