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), twodimensionalnuclearOverhausereffectcorrelation spectroscopy (NOESY), heteronuclearmultiplequantumcoherence (HMQC) and heteronuclearmultiple 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