Dinitroterephthalic acid （DNTPA） and diaminoterephthalic acid （DATPA） were prepared in 85% and 75% yields, respectively. These compounds were characterized by using FTIR and ^1HNMR. DATPA can be used as a monomer ...Dinitroterephthalic acid （DNTPA） and diaminoterephthalic acid （DATPA） were prepared in 85% and 75% yields, respectively. These compounds were characterized by using FTIR and ^1HNMR. DATPA can be used as a monomer for the preparation of polyesters and polyamides. 2009 H. Migbani. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.展开更多
Two new C-glucoside oxanthrones, 6-methoxyl-10-hydroxyaloin A （1） and 6-methoxyl-10-hydroxyaloin B （2）, were isolated from the roots of Rumex gmelini Turcz. Their structures were elucidated on the basis of spectro...Two new C-glucoside oxanthrones, 6-methoxyl-10-hydroxyaloin A （1） and 6-methoxyl-10-hydroxyaloin B （2）, were isolated from the roots of Rumex gmelini Turcz. Their structures were elucidated on the basis of spectroscopic techniques and chemical means C 2009 Zhen Yue Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All fights reserved.展开更多
A novel phenylpropanoid glycoside, Callicarposide A has been isolated from the aerial parts of Callicarpa kwangtungensis Chun. The chemical structure is elucidated on the basis of spectral analysis. C 2009 Teng Fei Ji...A novel phenylpropanoid glycoside, Callicarposide A has been isolated from the aerial parts of Callicarpa kwangtungensis Chun. The chemical structure is elucidated on the basis of spectral analysis. C 2009 Teng Fei Ji. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.展开更多
A novel flavonoid was isolated from the root of Macrothelypteris torresiana （Gaud.） Ching. The structure of the product was identified as 5, 7-dihydroxy-2-（1, 2-isopropyldioxy-4-oxocyclohex-5-enyl）-chromen-4-one o...A novel flavonoid was isolated from the root of Macrothelypteris torresiana （Gaud.） Ching. The structure of the product was identified as 5, 7-dihydroxy-2-（1, 2-isopropyldioxy-4-oxocyclohex-5-enyl）-chromen-4-one on the ground of chemical and spectro-scopic methods.2009 Jin Lan Ruan. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.展开更多
Three new sesquiterpenes, namely schensianol A （1）, schensianolside A （2） and schensianolside B （3） were isolated from the stems and leaves of Euonymus schensianus Maxim. Their structures were established by che...Three new sesquiterpenes, namely schensianol A （1）, schensianolside A （2） and schensianolside B （3） were isolated from the stems and leaves of Euonymus schensianus Maxim. Their structures were established by chemical methods and spectroscopic techniques including 2D NMR. ？ 2009 Wei Sheng Feng. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.展开更多
Chemical kinetics and reaction dynamics, as a crucial branch of physical chemistry, mostly concerns with the ＂how, why and when＂ of chemical reactions, which is not only an exciting intellectual frontier but also ad...Chemical kinetics and reaction dynamics, as a crucial branch of physical chemistry, mostly concerns with the ＂how, why and when＂ of chemical reactions, which is not only an exciting intellectual frontier but also addresses grand societal needs. These two aspects promote rapidly developing a series of experimental techniques, including ultrafast lasers, high resolution mass spectrometry and optical spectroscopy, and crossed molecular beam etc. Thanks to the rapid development of computer sci- ence, nowadays it is possible to calculate the reaction rates of complex reaction systems by advanced statistical kinetic theories based on accurate potential energy surfaces,展开更多
文摘Dinitroterephthalic acid （DNTPA） and diaminoterephthalic acid （DATPA） were prepared in 85% and 75% yields, respectively. These compounds were characterized by using FTIR and ^1HNMR. DATPA can be used as a monomer for the preparation of polyesters and polyamides. 2009 H. Migbani. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
基金supported by the National Natural Science Foundation of China(No.30270156).
文摘Two new C-glucoside oxanthrones, 6-methoxyl-10-hydroxyaloin A （1） and 6-methoxyl-10-hydroxyaloin B （2）, were isolated from the roots of Rumex gmelini Turcz. Their structures were elucidated on the basis of spectroscopic techniques and chemical means C 2009 Zhen Yue Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All fights reserved.
文摘A novel phenylpropanoid glycoside, Callicarposide A has been isolated from the aerial parts of Callicarpa kwangtungensis Chun. The chemical structure is elucidated on the basis of spectral analysis. C 2009 Teng Fei Ji. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
文摘A novel flavonoid was isolated from the root of Macrothelypteris torresiana （Gaud.） Ching. The structure of the product was identified as 5, 7-dihydroxy-2-（1, 2-isopropyldioxy-4-oxocyclohex-5-enyl）-chromen-4-one on the ground of chemical and spectro-scopic methods.2009 Jin Lan Ruan. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
文摘Three new sesquiterpenes, namely schensianol A （1）, schensianolside A （2） and schensianolside B （3） were isolated from the stems and leaves of Euonymus schensianus Maxim. Their structures were established by chemical methods and spectroscopic techniques including 2D NMR. ？ 2009 Wei Sheng Feng. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
文摘Chemical kinetics and reaction dynamics, as a crucial branch of physical chemistry, mostly concerns with the ＂how, why and when＂ of chemical reactions, which is not only an exciting intellectual frontier but also addresses grand societal needs. These two aspects promote rapidly developing a series of experimental techniques, including ultrafast lasers, high resolution mass spectrometry and optical spectroscopy, and crossed molecular beam etc. Thanks to the rapid development of computer sci- ence, nowadays it is possible to calculate the reaction rates of complex reaction systems by advanced statistical kinetic theories based on accurate potential energy surfaces,
