Cytotoxic biotransformed products from andrographolide by Rhizopus stolonifer ATCC 12939
作者:Xiangjiu He、Xiaobin Zeng、Hui Hu、Yixuan Wu
DOI:10.1016/j.molcatb.2009.11.002
日期:2010.3
resolution mass spectroscopy (HR-MS), extensive NMR techniques, including 1H NMR, 13C NMR, DEPT, 1H–1H correlation spectroscopy (COSY), two dimensional nuclear Overhauser effect correlation spectroscopy (NOESY), heteronuclear multiple quantum coherence (HMQC) and heteronuclear multiple bond coherence (HMBC). Their structures were identified to be 12(R),13(R)-12-hydroxyandrographolide (2), 12(S),13(S
穿心莲内酯(的生物转化1)由匍枝根霉ATCC 12939进行了研究。分离并鉴定出十种生物转化产物。通过高分辨率质谱(HR-MS),广泛的NMR技术阐明了它们的结构,包括1 H NMR,13 C NMR,DEPT,1 H– 1 H相关光谱(COSY),二维核Overhauser效应相关光谱(NOESY) ),异核多重量子相干性(HMQC)和异核多重键相干性(HMBC)。它们的结构被鉴定为12(R),13(R)-12-羟基穿心莲内酯(2),12(S),13(S)-12-羟基穿心莲内酯(3),异穿心莲内酯(4),3-脱氢异穿心莲内酯(5),14-脱氧-11,12-二氢氢化穿心莲内酯(6),3-氧代-14-脱氧-11 ,12-去氢穿心莲内酯(7),3-脱水(8),14-去氧(9),3-脱氢-14-去氧(10)和3-脱氢-14-去氧-19-酸(11)。其中,化合物5和11是新化合物。stolonif