Halogenated terpenes and a C(15)-acetogenin from the marine red alga Laurencia saitoi.
Seven parguerane diterpenes: 15-bromo-2,7,19-triacetoxyparguer-9(11)-en-16-ol (1), 15-bromo-2,7,16,19-tetraacetoxyparguer-9(11)-ene (2), 15-bromo-2,19-diacetoxyparguer-9(11)-en-7,16-diol (3), 15-bromo-2,16,19-triacetoxyparguer-9(11)-en-7-ol (4), 15-bromo-2,16-diacetoxyparguer-9(11)-en-7-ol (5), 15-bromoparguer-9(11)-en-16-ol (6), 15-bromoparguer-7-en-16-ol (7), two polyether triterpenes: thyrsiferol (8) and thyrsiferyl 23-acetate (9), and one C(15)-acetogenin, neolaurallene (10), were isolated from a sample of marine red alga Laurencia saitoi collected off the coast of Yantai. Their structures were established by detailed NMR spectroscopic analysis and comparison with literature data.
Ji
Nai-Yun
NY
Yantai Institute of Coastal Zone Research for Sustainable Development, Chinese Academy of Sciences, Yantai, PR China. nyji@yic.ac.cn
Li
Xiao-Ming
XM
Wang
Bin-Gui
BG
D054378:Acetogenins / Q000737:chemistry* / Q000302:isolation & purification*; D006219:Halogens / Q000737:chemistry* / Q000302:isolation & purification*; D044722:Laurencia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D013729:Terpenes / Q000737:chemistry* / Q000302:isolation & purification*
D054378:Acetogenins; D006219:Halogens; D013729:Terpenes