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( Yao Da Lei ),( Zhang Chang Hao ),( Li Ren ),( Luo Jie ),( Jin Mei ),( Piao Jin Hua ),( Zheng Ming Shan ),( Cui Jiong Mo ),( Son Jong Keun ),( Li Gao ) 영남대학교 약품개발연구소 2015 영남대학교 약품개발연구소 연구업적집 Vol.25 No.-
The present study was designed to isolate and characterize novel chemical constituents of the stem bark of Juglans mandshurica Maxim. (Juglandaceae).The chemical constituents were isolated and purified by various chromatographic techniques. The structures of the compounds were elucidated on the basis of spectral data (1D and 2D NMR, HR-ESI-MS, CD, UV, and IR) and by the comparisons of spectroscopic data with the reported values in the literatures. Two long chain polyunsaturated fatty acids (1 and 2) were obtained and identified as (S)-(8E, 10E)-12-hydroxy-7-oxo-8, 10-octadecadienoic acid (1) and (S)-(8E, 10E)-12-hydroxy-7-oxo-8,10-octadecadienoic acid methyl ester (2). To the best of our knowledge, this is the first report on the isolation and structural elucidation of the two new conjugated ketonic fatty acids from this genus.
( Da Lei Yao ),( Chang Hao Zhang ),( Jie Luo ),( Mei Jin ),( Ming Shan Zheng ),( Jiong Mo Cui ),( Jong Keun Son ),( Gao Li ) 영남대학교 약품개발연구소 2015 영남대학교 약품개발연구소 연구업적집 Vol.25 No.-
Two new (1 and 3) two known diarylhep-tanoids (2 and 4), along with two tetralones (5 and 6), one naphthoquinone (7), four phenylpropanoids (8-11), and phenol (12) were isolated from the leaves of Juglans mandshurica. Their structures were elucidated on the basis of spectral and chemical data. Compounds 2 and 10 are firstly isolated from this plant and 8 and 12 were isolated from the Juglans genus for the first time. Among these compounds, only 7 cxhibitcd moderate cytotoxicities against cultured Mgc-803, A549, K562, and Hela tumor cell lines with IC50 values of 25.90, 28.60, 39.06, 44.90 LLM, respectively.
Chemical constituents from the leaves of Juglans mandshurica
Da Lei Yao,Chang Hao Zhang,Jie Luo,Mei Jin,Ming Shan Zheng,Jiong Mo Cui,손종근,Gao Li 대한약학회 2015 Archives of Pharmacal Research Vol.38 No.4
Two new (1 and 3) and two known diarylheptanoids(2 and 4), along with two tetralones (5 and 6), onenaphthoquinone (7), four phenylpropanoids (8–11), andone phenol (12) were isolated from the leaves of Juglansmandshurica. Their structures were elucidated on the basisof spectral and chemical data. Compounds 2 and 10 arefirstly isolated from this plant and 8 and 12 were isolatedfrom the Juglans genus for the first time. Among thesecompounds, only 7 exhibited moderate cytotoxicitiesagainst cultured MGC-803, A549, K562, and HeLa tumorcell lines with IC50 values of 25.90, 28.60, 39.06,44.90 lM, respectively.
Zhu, Lei,Tang, Jia-Yao,Fan, Jia-Yi,Sun, Chen,Meng, Ze-Da,Oh, Won-Chun Materials Research Society of Korea 2021 한국재료학회지 Vol.31 No.11
Herein, a series of g-C<sub>3</sub>N<sub>4</sub> modified Bi<sub>2</sub>MoO<sub>6</sub> nanocomposites using Bi<sub>2</sub>MoO<sub>6</sub> and melamine as original materials are fabricated via sintering process. For presynthesis of Bi<sub>2</sub>MoO<sub>6</sub> an ultrasonic-assisted hydrothermal technique is researched. The structure and composition of the nanocomposites are characterized by Raman spectroscopy, X-ray diffraction (XRD), and high-resolution field emission scanning electron microscopy (SEM). The improved photoelectrochemical properties are studied by photocurrent density, EIS, and amperometric i-t curve analysis. It is found that the structure of Bi<sub>2</sub>MoO<sub>6</sub> nanoparticles remains intact, with good dispersion status. The as-prepared g-C<sub>3</sub>N<sub>4</sub>/Bi<sub>2</sub>MoO<sub>6</sub> nanocomposites (BMC 5-9) are selected and investigated by SEM analysis, which inhibits special morphology consisting of Bi<sub>2</sub>MoO<sub>6</sub> nanoparticles and some g-C<sub>3</sub>N<sub>4</sub> nanosheets. The introduction of small sized g-C<sub>3</sub>N<sub>4</sub> nanosheets in sample BMC 9 is effective to improve the charge separation and transfer efficiency, resulting in enhancing of the photoelectric behavior of Bi<sub>2</sub>MoO<sub>6</sub>. The improved photoelectronic behavior of g-C<sub>3</sub>N<sub>4</sub>/Bi<sub>2</sub>MoO<sub>6</sub> may be attributed to enhanced charge separation efficiency, photocurrent stability, and fast electron transport pathways for some energy applications.
Cytotoxic anthraquinone dimers from Melandrium firmum
Chang Hao Zhang,Da Lei Yao,Cheng-Shen Li,Jie Luo,Mei Jin,Ming-Shan Zheng,Zhen-Hua Lin,Tie-Feng Jin,Gao Li 대한약학회 2015 Archives of Pharmacal Research Vol.38 No.6
Two new anthraquinone dimers, melrubiellin A(1) and melrubiellin B (2), were isolated from the aerialpart of Melandrium firmum Rohrbach, along with sevenknown compounds (3–9). The structures of these compoundswere elucidated by spectral analyses, including 1Dand 2D NMR (COSY, HMQC, HMBC and NOESY)experiments. Compound 1 and 2 exhibited significantcytotoxicity towards HeLa, NCI-H460, Hep G2, Hep 3Band MKN-28 cell lines with IC50 values ranging from 5.26to 81.16 lM.
Chemical constituents from the aerial parts of Melandrium firmum
Chang Hao Zhang,Gao Li,Jie Luo,Tian Li,Yong Cui,Mei Jin,Da Lei Yao,Ming Shan Zheng,Zhen-Hua Lin,Jiong Mo Cui 대한약학회 2015 Archives of Pharmacal Research Vol.38 No.10
Two new anthraquinones, melrubiellin C (1) andmelrubiellin D (2), were isolated from the aerial parts of Melandriumfirmum Rohrbach, together with eight known compounds(3–10). The structures of these compounds wereelucidated using 1Dand 2DNMR(COSY,HMQC,HMBCandNOESY) experiments. All isolated compounds were tested fortheir cytotoxicity against NCI-H460, Hep G2, MKN-28 andA-549 cells.Of these 10 compounds,1 and 2 exhibitedmoderatecytotoxicity with IC50 values ranging from 9.54 to 32.41 lM.