AntiA3typeinfluenza virus activity and toxicity for chick embryo of some heteropoly compounds containing rare earth elements were investigated. The results demonstrate that these heteropoly compounds directly inactiva...AntiA3typeinfluenza virus activity and toxicity for chick embryo of some heteropoly compounds containing rare earth elements were investigated. The results demonstrate that these heteropoly compounds directly inactivate the A3type influenza virus, and the inhibition rate of K15)2]15H2O for the A3type influenza virus is more than 90% with antivirus index TI 69. The result is obviously superior to that of the positive reference drug ribavirin.展开更多
A new flavonol oligosaccharide, quercetin-3-O-[b-D-xylopyranosyl-(12)- a-L-rhamnopyranosyl-(16)]-b-D-glucopyranoside-3-O-b-D-glucopyranoside, named aescuflavoside was isolated from Aesculus chinensis. Its structure w...A new flavonol oligosaccharide, quercetin-3-O-[b-D-xylopyranosyl-(12)- a-L-rhamnopyranosyl-(16)]-b-D-glucopyranoside-3-O-b-D-glucopyranoside, named aescuflavoside was isolated from Aesculus chinensis. Its structure was elucidated by spectra FAB-MS, 1D NMR and 2D NMR including 1H NMR, 13C NMR, HMQC and HMBC techniques.展开更多
A series of novel N-tert-butyl-N＇-acyl-5-methyl-1,2,3-thiadiazole-4-carbohydrazides were designed and synthesized. Their structures were characterized by melting points, ^1H NMR, IR, ESI-MS, and elemental analysis. T...A series of novel N-tert-butyl-N＇-acyl-5-methyl-1,2,3-thiadiazole-4-carbohydrazides were designed and synthesized. Their structures were characterized by melting points, ^1H NMR, IR, ESI-MS, and elemental analysis. The bioassay tests indicated that compound 7o exhibited excellent direct anti-TMV activity and induction activity in vivo at 50μg/mL, which was better than that of Ninamycin and tiadinial. Our studies indicated that 1,2,3-thiadiazole was an active substructure for novel pesticide development.展开更多
文摘AntiA3typeinfluenza virus activity and toxicity for chick embryo of some heteropoly compounds containing rare earth elements were investigated. The results demonstrate that these heteropoly compounds directly inactivate the A3type influenza virus, and the inhibition rate of K15)2]15H2O for the A3type influenza virus is more than 90% with antivirus index TI 69. The result is obviously superior to that of the positive reference drug ribavirin.
文摘A new flavonol oligosaccharide, quercetin-3-O-[b-D-xylopyranosyl-(12)- a-L-rhamnopyranosyl-(16)]-b-D-glucopyranoside-3-O-b-D-glucopyranoside, named aescuflavoside was isolated from Aesculus chinensis. Its structure was elucidated by spectra FAB-MS, 1D NMR and 2D NMR including 1H NMR, 13C NMR, HMQC and HMBC techniques.
基金funded in part by the NNSFC(No.20872071)the NSF of Tianjin(No.10JCZDJC17500)+3 种基金the National Key Project for Basic Research(No.2010CB126105)National Key Technology Research and Development Program(Nos.2011BAE06B02 and 2011BAE06B05)the Foundation of Achievements Transformation and Application of Tianjin Agricultural Science and Technology(No.201002250)Tianjin Key Technology Research and Development Program(No.11ZCGYNC00100)
文摘A series of novel N-tert-butyl-N＇-acyl-5-methyl-1,2,3-thiadiazole-4-carbohydrazides were designed and synthesized. Their structures were characterized by melting points, ^1H NMR, IR, ESI-MS, and elemental analysis. The bioassay tests indicated that compound 7o exhibited excellent direct anti-TMV activity and induction activity in vivo at 50μg/mL, which was better than that of Ninamycin and tiadinial. Our studies indicated that 1,2,3-thiadiazole was an active substructure for novel pesticide development.
