title: Unique monoterpenoid indole alkaloids from Alstonia scholaris.
abstract: [structure: see text] A pair of geometrically isomeric monoterpenoid indole alkaloids with a skeleton rearrangement and two additional carbons, named (19,20) E-alstoscholarine (1) and (19,20) Z-alstoscholarine (2), were obtained from the leaf extract of Alstonia scholaris. Their structures were elucidated on the basis of spectroscopic methods and then confirmed by X-ray crystal diffraction. The biogenesis of these compounds was also proposed.
authors: State Key Laboratory of Phytichemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Scienes, Kunming 650204, China.
authors: Xiang-Hai
authors: XH
authors: Cai
authors: Zhi-Zhi
authors: ZZ
authors: Du
authors: Xiao-Dong
authors: XD
authors: Luo
mesh_terms: D031051:Alstonia / Q000737:chemistry* / Q000378:metabolism; D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D046948:Secologanin Tryptamine Alkaloids / Q000737:chemistry* / Q000378:metabolism
chemical_list: D046948:Secologanin Tryptamine Alkaloids