Key Laboratory of Tobacco Chemistry of Yunnan Province

Laboratory of, China

Key Laboratory of Tobacco Chemistry of Yunnan Province

Laboratory of, China
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Lv J.,Kunming University of Science and Technology | Lv J.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Liao Z.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Wang L.,Key Laboratory of Tobacco Chemistry of Yunnan Province | And 2 more authors.
Asian Journal of Chemistry | Year: 2012

A new lignan, smallanlignan B (1) together with seven known lignans (2-8) were isolated from the leaves of S. sonchifolius. Their structures were elucidated by the analysis of spectroscopic data. The antioxidant activity of smallanlignan B was also evaluated and it showed antioxidant activity with an IC 50 value of 2.18 mg/mL.


Zhang X.,Sun Yat Sen University | Zhou F.,BYD Industry Co. Shenzhen 518118 China | He P.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Zhang M.,Guangxi University | Gong M.,Sun Yat Sen University
Luminescence | Year: 2015

Eu3+-activated Y(P,V)O4 phosphors were prepared by the EDTA sol-gel method, and the corresponding morphologies and luminescent properties were investigated. The sample particles were relatively spheroid with size of 2-3μm and had a smooth surface. The excitation spectra for Y(P,V)O4:Eu3+ consisted of three strong excitation bands in the 200-350nm range, which were attributed to a Eu3+-O2- charge-transfer band and 1A1-1T1/1T2 transitions in VO43-. The as-synthesized phosphors exhibited a highly efficient red luminescence at 613nm due to the Eu3+ 5D0-7F2 electric dipole transition. With the increase in the V5+/P5+ ratio, the luminescence intensity of the red phosphor under UV excitation was greatly improved due to enhanced VO43-→Eu3+ energy transfer. © 2015 John Wiley & Sons, Ltd.


Kong G.-H.,Yunnan Academy of Agricultural Sciences | Wu Y.-P.,Yunnan Academy of Agricultural Sciences | Wu Y.-P.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Wu Y.-P.,Tobacco Yunnan Industrial Co. | And 14 more authors.
Heterocycles | Year: 2016

Two new isoindolin-1-ones, 2-(2-hydroxyethyl)-5-methyl-6-(3- methylbut-2-enyl)isoindolin-1-one (1) and 2,5-dimethyl-6-(3-methylbut-2-enyl)- isoindolin-1-one (2), were isolated from the leaves of Nicotiana tabacum. Their structures were determined by means of HRESIMS and extensive 1D and 2D NMR spectroscopic studies. Compounds 1 and 2 were tested for their anti-tobacco mosaic virus (anti-TMV) activities. The results revealed that compounds 1 and 2 showed potential anti-TMV activities with inhibition rates of 48.2 and 45.6%, respectively. © 2016 The Japan Institute of Heterocyclic Chemistry.


Xu Y.-R.,Yuxi Teachers College | Li Y.-K.,Yuxi Teachers College | Cao J.-L.,Yunnan Nationalities University | Zhang X.,Yuxi Teachers College | And 3 more authors.
Asian Journal of Chemistry | Year: 2010

A new daphne diterpenoid (daphnediterp A) was isolated from the leaf and steam of Daphne acutiloba Rehd. Its structure was determined by means of HRESIMS, extensive 1D and 2D NMR spectroscopic studies and chemical evidence. The anti HIV-1 activity was also evaluated and it shows an anti HIV-1 activity with a therapeutic index above 31.4.


Cao J.-L.,Yunnan Nationalities University | Cao J.-L.,Yuxi Teachers College | Xue J.-J.,Yunnan Nationalities University | Xue J.-J.,Yuxi Teachers College | And 6 more authors.
Asian Journal of Chemistry | Year: 2010

A new arylnaphthalene lignan (daphnelignan B), together with three known one, were isolated from the leaf and steam of Daphne acutiloba Rehd. Their structures were determined by means of HRESIMS, extensive 1D and 2D NMR spectroscopic studies and chemical evidence. The anti-HIV-1 activity of daphnelignan B was also evaluated and it shows an anti-HIV-1 activity with a TI (Therapeutic Index) above 35.62.


Yang X.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Yang X.,Yunnan Nationalities University | Wei J.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Xu S.,Key Laboratory of Tobacco Chemistry of Yunnan Province | And 4 more authors.
Asian Journal of Chemistry | Year: 2012

A new monoterpene 4-acetyl-3-hydroxy-6-isopropyl-pyran-2-one (m.f. C 10H 12O 4) was isolated from the fruits of Ziziphus jujuba Mill. The structure was elucidated on the basis of extensive NMR and MS means. The antioxidant activity of the new monoterpene was evaluated and it showed antioxidant activity with an IC 50 value of 3.53 μ g/mL.


Wang L.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Chen Z.-Y.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Jiang C.-Q.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Liao Z.,Key Laboratory of Tobacco Chemistry of Yunnan Province | And 2 more authors.
Asian Journal of Chemistry | Year: 2010

A new neolignan, daphnelignan C (1), together with four known one, were isolated from the leaves of Daphne feddei levl. var. The structures of daphnelignan C (1) were elucidated by spectroscopic methods, including extensive 1-D and 2-D NMR techniques. All the five compounds were tested for their cytotoxicity. Compound daphnelignan C (1) showed significant potential cytotoxic ability and weak anti HIV-1 activities.


Xue J.J.,Yunnan Nationalities University | Xue J.J.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Chzn L.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Chzn Y.K.,Key Laboratory of Tobacco Chemistry of Yunnan Province | And 6 more authors.
Asian Journal of Chemistry | Year: 2011

Phytochemical investigation of the leaf of Smallanthus sonchifolius led to the isolation and identification of a new lignan (smallanlignan A) and five known lignans. The structures were elucidated by the analysis of spectroscopic data. The antioxidant activity of smallanlignan A was evaluated and it showed antioxidant activity with an IC50 value of 1.65 μg/mL.


Wu N.,Yunnan Nationalities University | Wu N.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Wang L.,Key Laboratory of Tobacco Chemistry of Yunnan Province | Chzn Y.-K.,Key Laboratory of Tobacco Chemistry of Yunnan Province | And 5 more authors.
Asian Journal of Chemistry | Year: 2011

A new lignan (Styrlignan A), together with four known lignans, were isolated from the steam of Styrax japonica (Styracaceae). Their structures were determined by means of HRESIMS, extensive 1D and 2D NMR spectroscopic studies and chemical evidence. The anti HIV-1 activity of Styrlignan A was also evaluated and it shows an anti HIV-1 activity with a TI (therapeutic index) above 38.5.

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