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| 1 | Efficient Synthesis of Glycosylated Matijin-Su Derivatives via Ultrasonic Irradiation显示文摘Matijin-Su (1 ) 是有反肝炎 B 的本氨基丙酸 dipeptide 混合物病毒(HBV ) 活动。以前的报告建议 glycosylated Matijin-Su 衍生物的合成需要至少 10 步。简化合成过程,我们经由超声照耀为准备开发了一个更短、更有效的方法。二 galactopyranosylated (2 ) 和二 glucopyranosylated (3 ) 衍生物在 6 或 7 步被综合。为 galactopyranosylated 衍生物的全部的合成的全面收益显著地被增加到 39%(2a ) 或 22%(2b ) 。并且为 glucopyranosylated 衍生物的收益也到达了 29%(3a ) 或 16%(3b ) 。 | Guangping Liang Zhanxing Hu Jie Yuan Guangyi Liang Bixue XU | 2016 | Chinese Journal of Chemistry2016，34，12： | 0 |
| 2 | Inhibitory Effects of Sixteen Fungicides on Mycelial Growth and Spore Germination of Monilinia fructicola显示文摘[Objective]The paper was to compare the indoor toxicities of sixteen fungicides on mycelial growth and spore germination of Monilinia fructicola,to screen out effective fungicides and to discuss use characteristics of various types of fungicides.[Method]The inhibitory activities of 16 fungicides on mycelial growth and spore germination were determined by mycelial growth rate method and spore germination method.[Result]The EC50 values of 16 fungicides against mycelial growth ranged from 0.0184 to 61.5305 mg/L.Prochloraz,tetramycin,fenbuconazole and fludioxonil had strong inhibitory activities on mycelial growth,and their EC50 values were 0.0184,0.0456,0.0531 and 0.0814 mg/L,respectively,significantly lower than those of other 12 fungicides.The EC50 values of 16 fungicides against spore germination ranged from 0.0084 to 189.3938 mg/L.Tetramycin and chlorothalonil had strong inhibitory activities on mycelial growth,and their EC50 values were 0.0084 and 0.0378 mg/L,respectively,significantly lower than those of other 14 fungicides.[Conclusion]The 16 fungicides had great value in preventing and controlling peach brown rot.Benzimidazoles,diformimides and ergosterol inhibitors had good inhibitory activities on mycelial growth.Strobilurins,succinate dehydrogenase inhibitors and multiple-site protective fungicides had good inhibitory activities on spore germination.The agricultural antibiotics tetramycin,phenazine-1-carboxylic acid and pyrrole fungicide fludioxonil had good inhibitory activities on mycelial growth and spore germination. | Song Huawen Xu Nana Gao Deliang Hu Zunji Zhuang Zhiguo Liu Yu Wu Xibao Zhuang Zhanxing | 2021 | Plant Diseases and Pests2021，12，1： | 0 |
| 3 | Indoor Toxicity and Field Efficacy of Five Strobilurins Fungicides against Phomopsis asparagi (Sacc.) Bubak显示文摘[Objective]The study was to evaluate the indoor toxicity and field efficacy of five Strobilurins fungicides including pyraclostrobin 250 g/L EC,azoxystrobin 250 g/L SC,kresoxim-methyl 50%WG,picoxystrobin 22.5%SC and trifloxystrobin 50%WG against Phomopsis asparagi(Sacc.)Bubak,and to screen out effective fungicides.[Method]The toxicity was tested by mycelial growth rate method.The field trials were carried out by routine spraying method.[Result]The indoor toxicities successively were pyraclostrobin>kresoxim-methyl>picoxystrobin>trifloxystrobin>azoxystrobin.The EC50 values were 6.1029,52.5591,83.8257,129.8616 and 252.1214 mg/L,respectively,all significantly higher than that of benzimidazole fungicide carbendazim(753.3650 mg/L).The field efficacies successively were pyraclostrobin>kresoxim-methyl≥picoxystrobin≥azoxystrobin≥trifloxystrobin.The control effects were 81.20%,77.95%,74.80%,71.69%and 68.54%,respectively,all significantly higher than that of benzimidazole fungicide carbendazim(48.27%).[Conclusion]The five Strobilurins fungicides all have good toxicity and field efficacy against P.asparagi. | Song Huawen Gao Deliang Xu Nana Hu Zunji Zhuang Zhiguo Zhuang Zhanxing | 2019 | Plant Diseases and Pests2019，10，5： | 0 |
| 4 | Three rare anti-inflammatory sesquiterpene lactones from Magnolia grandiflora显示文摘[ABSTRACT]Four new sesquiterpene lactones(SLs)(1–4),along with a biosynthetically related SL(5),have been isolated from the leaves of Magnolia grandiflora.Magrandate A(1)is notable as the first C18 homogemarane type SL,featuring a unique 1,7-dioxaspiro[4.4]nonan-6-one core.Compounds 2 and 3,representing the first instances of chlorine-substituted gemarane-type SL analogs in natural products,were also identified.The structures of these isolates were elucidated through a combination of spectroscopic data analysis,electronic circular dichroism calculations,and X-ray single-crystal diffraction analysis.All isolates demonstrated anti-inflammatory activity in lipopolysaccharide-stimulated RAW264.7 cells.Notably,3–5 showed a significant inhibitory effect on nitric oxide production,with IC50 values ranging from 0.79 to 4.73μmol·L−1.Additionally,4 and 5 exhibited moderate cytotoxic activities against three cancer cell lines,with IC50 values between 3.09 and 11.23μmol·L−1. | XU Shuangyu ZHANG Feng TAO Linlan JIANG Yangming HUANG Tao LI Yanan HU Zhanxing YANG Jue HAO Xiaojiang YUAN Chunmao | 2024 | Chinese Journal of Natural Medicines2024，22，3： | 0 |
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