title: 24-norhopene derivatives from Diatenopteryx sorbifolia.
abstract: Two new hopene derivatives, 3 beta,6 beta-dihydroxy-21 alpha H-24-norhopa-4(23),22(29)-diene (1) and 3 beta,5 beta-dihydroxy-6 beta-[(4-hydroxybenzoyl)oxy]-21 alpha H-24-norhopa-4(23),22(29)-diene (2), together with cleomiscosin B (3) and 5,6-dimethoxy-7-hydroxycoumarin (umckalin), were isolated from the timber of Diatenopteryx sorbifolia. This is the first isolation of the norhopene skeleton from nature. The structures of the isolates were established by spectroscopic analysis.
authors.affiliation: Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: Chávez
authors.forename: J M
authors.initials: JM
authors.lastname: David
authors.forename: S W
authors.initials: SW
authors.lastname: Yang
authors.forename: G A
authors.initials: GA
authors.lastname: Cordell
mesh_terms: D000107:Acetylation; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification*; D002240:Carbohydrate Sequence; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D014407:Tumor Cells, Cultured; D014934:Wood
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D014315:Triterpenes