title: [Fine stereo structure for natural organic molecules, a preliminary study. II. Melting point influenced by structure factors].
abstract: Crystal structures of two compounds from Tripterygium wilfordii Hook f. have been determined by X-ray diffraction method. Structure factors influencing melting point of solid state have been analysed. Crystal class (or space group), recrystallization solvent, force between molecules and fine changes of molecular structures will all cause melting point changes of crystal substance.
authors.affiliation: Institute of Materia Medica, CAMS, Beijing.
authors.forename: Y
authors.initials: Y
authors.lastname: Lu
authors.forename: Q
authors.initials: Q
authors.lastname: Zheng
authors.forename: D
authors.initials: D
authors.lastname: Lu
authors.forename: P
authors.initials: P
authors.lastname: Ma
authors.forename: Y
authors.initials: Y
authors.lastname: Chen
mesh_terms: D018360:Crystallography, X-Ray; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D013764:Tetrahydronaphthalenes / Q000737:chemistry* / Q000302:isolation & purification; D029757:Tripterygium
chemical_list: D004365:Drugs, Chinese Herbal; D013764:Tetrahydronaphthalenes; C098809:wilfjine; D009828:Oleanolic Acid; C052981:wilforlide A