title: Additional new tetracyclic tetraterpenoid: methyl tortuoate D from soft coral Sarcophyton tortuosum.
abstract: Under the guidance of chemical prescreening by direct infusion electrospray ionization mass spectrometry (DI ESI-MS), a new tetracyclic tetraterpenoid, methyl tortuoate D (1) was isolated from the soft coral Sarcophyton tortuosum collected from the South China Sea. Its structure and relative stereochemistry were established by MS, and 1D- and 2D-NMR spectroscopic techniques.
authors.affiliation: School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China.
authors.forename: Wen-Jian
authors.initials: WJ
authors.lastname: Lan
authors.forename: Shou-Liang
authors.initials: SL
authors.lastname: Wang
authors.forename: Hou-Jin
authors.initials: HJ
authors.lastname: Li
mesh_terms: D000818:Animals; D037421:Anthozoa / Q000737:chemistry*; D002850:Chromatography, Gel; D019906:Nuclear Magnetic Resonance, Biomolecular; D009904:Optical Rotation; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D013729:Terpenes