title: Four lignans from Commiphora erlangeriana.
abstract: Four new lignans, two of the polygamatin-type, named erlangerin A (1) and erlangerin B (2), and two related to podophyllotoxin, named erlangerin C (3) and erlangerin D (4), were isolated from the resin of Commiphora erlangeriana, a plant occurring in Ethiopia and Somalia. The structures of these compounds including their relative stereochemistry were elucidated on the basis of spectral evidence, chemical data, and X-ray crystallographic analysis.
mesh_terms: D029744:Commiphora / Q000737:chemistry*; D018360:Crystallography, X-Ray; D005002:Ethiopia; D006868:Hydrolysis; D017705:Lignans / Q000737:chemistry* / Q000302:isolation & purification*; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D012116:Resins, Plant / Q000737:chemistry* / Q000633:toxicity; D013237:Stereoisomerism
chemical_list: D017705:Lignans; D012116:Resins, Plant