中国化学快报

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The Unexpected Reductive Products of δ-Alkoxyenal by Sodium Borohydride in Methanol with A Trace of Magnesium Methoxide

Yu XIA, Xiang Shu XIAO, Xu Chang HE, Dong Lu BAI

中国化学快报. 2002, 13(09): 809-810.

摘要 ( )

可视化

Reduction of δ-alkoxy enal 1 and 4 by sodium borohydride in methanol with a catalytic amount of magnesium methoxide gave unexpected methoxylated poducts 3 and 6 respectively.

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Synthesis of Asymmetric Propanetriol Analogues

Yong En GUO, Jia Hua CHEN, Bin FU, Neng Dong WANG, Sheng JIN, Liu Min CHEN, Feng ZOU, Xiu ZHANG, Yan Dong ZHANG, Ze Jin YOU

中国化学快报. 2002, 13(09): 811-813.

摘要 ( )

可视化

From natural tartaric acid, (R)-2-benzyloxy-3-(2-tetrahydropyranyloxy) propanol 3 was designed and synthesized, and (R)-2-benzyloxy-3-(4-methoxybenzyloxy) propanol 7 was prepared in a new method. They can be used as chiral synthons of lysophosphatidic acid and other compounds with asymmetric propanetriol backbone.

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Synthesis and Their Endothelium Vascular Relaxation of Arecoline Derivatives Containing Oxadiazoline

Guo Qiang HU, Wen Long HUANG, Hui Bin ZHANG, Hai WANG

中国化学快报. 2002, 13(09): 814-817.

摘要 ( )

可视化

Ten novel 1,1-dimethyl-3-(2-or 5-aryl-4-acetyl-2,3-dihydro-1,3,4-oxadiazoline-5-or-2-yl)-1,2,5,6-tetrahydropyridinium iodides were synthesized from starting material nicotinalde-hyde or nicotinic acid by two different synthetic methods respectively. The preliminary bioactive tests indicate som compounds exhibit potent relaxing effect on endothelial cells, comparable to Ach or arecoline.

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An Efficient Synthesis of Tertiaryaminomethylphosphonates, A Versatile Precursor for Synthesis of Glyphosate and α-Aminomethylphosphonates

Liang XU, Min XIA, Jun Chao CAI

中国化学快报. 2002, 13(09): 818-819.

摘要 ( )

可视化

Reaction of simple dialkyl phosphites with symmetrical 1,3,5-trisubstituted hexahydro-triazines (HHTs) in the presence of benzyl chloride, afforded tertiaryaminomethylphosphonates in excellent yields. Glyphosate, α-aminomethylphosphonates and their derivatives can therefore be synthesized by this procedure conveniently.

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The Total Synthesis of 14-Deoxycrassin and Pseudoplexaurol:A Convergent Synthesis of Cyclization Precursor

Shu Hua LI, Wei Dong LI, Yu Lin LI

中国化学快报. 2002, 13(09): 820-823.

摘要 ( )

可视化

The synthesis of epoxy aldehyde 4, a cyclization precursor for the total synthesis of 14-deoxycrassin and pseudoplexaurol, starting from geraniol in a convergent and stereoselective manner, is described.

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Synthesis of Methyl-substituted Phthalazinone-based Aromatic Poly(amide imide)s

Xiu Ling ZHU, Xi Gao JIAN, Lian Zhou CHEN

中国化学快报. 2002, 13(09): 824-825.

摘要 ( )

可视化

A series of novel aromatic poly (amide imide)s containing phthalazinone moieties were prepared from 2-(4-aminophenyl)-4-[3-methyl-4-(4-aminophenoxy)-2,3-phthalazinone-1], a novel diamine 1 with four diimide-dicarboxylic acids by Yamazaki phosphorylation method with the inherent viscosity of 0.36~0.65 dL/g. These polymers had high glass transition temperatures above 300℃ and they lost 10% weight between 426~475℃ in N₂. The structure of diamine 1 and the polymers was confirmed by IR, ¹H NMR and MS. The obtained polymers were readily soluble in polar solvents such as NMP, m-cresol etc. and easily cast into tough, flexible films. The X-ray indicated that they are all amorphous.

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The Synthesis and Regioselective Hydrolysis of Dialkyl 2-Phenylfuran (and 2-Phenyltetrahydrofuran)-3,4-dicarboxylates

Shrong Shi LIN, Bo YANG

中国化学快报. 2002, 13(09): 826-829.

摘要 ( )

可视化

Dialkyl 2-phenylfuran (and 2-phenyltetrahydrofuran)-3,4-dicarboxylates (1, 2, 5-7), which are potential precursors of the synthesis of furofuran and tetrahydrofurofuran lignans, can be selectively hydrolyzed to monoacid (3, 8) by potassium hydroxide. The regioselective hydrolysis was affected significantly by the 2-phenyl group of the furan or tetrahydrofuran skeleton. The geometric structures of 3, 8 and related compounds were elucidated and verified by NMR spectra.

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Total Synthesis of (±)-Celaphanol A

Ping Yan BIE, Cheng Lu ZHANG, Xuan Jia PENG, Xin Fu PAN

中国化学快报. 2002, 13(09): 830-831.

摘要 ( )

可视化

The first total synthesis of (±)-Celaphanol A was accomplished starting from α-cyclocitral and 3,4-dimethoxy benzyl chloride via a six-step process, in which the intramolecular cyclization of ketone 4 with BF₃·Et₂O afforded an all-cis isomer intermediate for synthesis of aromatic tricyclic diterpenes.

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The Preparation of 2-O-Acetonyl-β-cyclodextrin as One Key Intermediate for Water Soluble β-Cyclodextrin Derivatives

Ai You HAO, Jin Shan WANG

中国化学快报. 2002, 13(09): 832-835.

摘要 ( )

可视化

2-O-Acetonyl-β-cyclodextrin with a suitable average substitution degree of about 5.8,which could be used as a key intermediate for water soluble functional β-cyclodextrin derivatives,was prepared based on the proper oxidation of heptakis (6-O-dimethyl-tert-butylsilyl)-2-O-hydroxypropyl-β-cyclodextrin.

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The Synthesis of Dialdehyde from Sodium Hydrogen Telluride with 1,1',3,3'-Tetramethyl-2,2'-bis-benzimidazolium Salt

Ke Fen YUE, Huan GU, Zhen SHI

中国化学快报. 2002, 13(09): 836-838.

摘要 ( )

可视化

The reaction of bis-benzimidazolium salts with sodium hydrogen telluride is reported,and a new synthetic method for dialdehydes is provided.

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Synthesis of a New Type of Amphilic and Water-soluble Tertiary Phosphine Ligands Substituted by an Ethoxylated Phosphonic Acid Chain and Their Palladium Complexes

Xiang Kai FU, Xue Bing MA

中国化学快报. 2002, 13(09): 839-842.

摘要 ( )

可视化

The highly water-soluble phosphine ligands Na₂O₃PCH₂CH₂NH(CH₂CH₂O)_nCH₂CH₂N(CH₂PPh₂)₂ (n=1,2,3) were prepared by a new and simple route under mild conditions in goodyield; the palladium (Ⅱ) complexes of the ligands 3a~c with 2:1 or 4:1-PPh₂ to Pd²⁺ molar ratiowere also prepared and characterized.

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Ethylene Oligomerization to Low Carbon Olefins by a Zirconium Complex Incorporating 8-Quinolinolato Ligands at a Low Al/Zr Ratio

Ming Xing QIAN, Mei WANG, Hui WANG, Ren HE

中国化学快报. 2002, 13(09): 843-844.

摘要 ( )

可视化

Bis(8-quinolinolato)zirconium dichloride (Ox)₂ZrCl₂ (Ox^-=8-quinolinolato) was foundactive for ethylene oligomerization with a high selectivity of 84~94% to C₄~C₁₀ olefins at70~100℃ under the pressure of 1.8 MPa using Et₂AlCl as a co-catalyst (Al/Zr=60).

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A Novel Scheme for Production of Polyclonal Antibody against Estrogenic Bisphenols

Mei Ping ZHAO, Yuan Zong LI, Zhen Quan GUO, Xin Xiang ZHANG, Wen Bao CHANG

中国化学快报. 2002, 13(09): 845-848.

摘要 ( )

可视化

A polyclonal antibody against the currently concerned estrogenic bisphcnol compoundswas produced according to a new scheme. 4,4-Bis (4-hydroxyphenyl) valeric acid was used tosynthesize the complete antigen in which the characteristic bisphenol structure was exposed to thelargest extent. The produced polyclonal antibody showed high specificity and affinity forbisphenol A.

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A New Binary Carbazole Alkaloid from Murraya koenigii

Yun Song WANG, Hong Ping HE, Xin HONG, Qing ZHAO, Xiao Jiang HAO

中国化学快报. 2002, 13(09): 849-850.

摘要 ( )

可视化

A new binary carbazole alkaloid, 8,8"-biskoenigine (1), along with its monomer,kocnigine, was isolated from the dried leaves of Murraya koenigii collected in Xishuangbanna,Yunnan province. The structure of 1 was established by spectroscopic methods.

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A New Steroidal Saponin from Dioscorea deltoidea Wall var.orbiculata

Ping SHEN, San Long WANG, Xi Kui LIU, Chong Ren YANG, Bing CAI, Xin Sheng YAO

中国化学快报. 2002, 13(09): 851-854.

摘要 ( )

可视化

Bioactivity-guided fractionation led to the isolation of a new steroidal saponin,orbiculatoside B, together with a pair of furostanol saponins, protobioside and methyl protobioside,from the fresh rhizomes of Dioscorea deltoidea Wall var. orbiculata. The new compound was identified to be isonarthogenin 3-O-α-L-rhamnopyranosyl (1→2)-[α-L-rhamnopyranosyl-(1→4)]-β-D-glucopyranoside by various NMR techniques in combination with chemical methods. The three saponins showed strong activity against Pyricularia oryzae, and were cytotoxic to cancer cell line K562, HCT-15, A549, and A2780a in vitro.

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A New Eudesmanoilde from Carpesium macrocephalum

Chao YANG, Cheng Shan YUAN, Yi Feng HAN, Zhong Jian JIA

中国化学快报. 2002, 13(09): 855-856.

摘要 ( )

可视化

A new eudesmanoilde was isolated from the aerial parts of Carpesium macrocephalum.Its structure was elucidated as 2α-acetoxy-11αH-eudesma-4-en-12,8β-olide by spectral methods.

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A Novel Dihydroflavone from the Roots of Uvaria Macrophylla

Si WANG, Pei Cheng ZHANG, Ruo Yun CHEN, Ying Hong WANG, Wen Yi HE, De Quan YU

中国化学快报. 2002, 13(09): 857-858.

摘要 ( )

可视化

A new dihydroflavone (1), named macrophyllol A, was isolated from the roots of Uvaria nacrophylla. Its structure was elucidated on the basis of spectroscopic evidence.

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Hemislin B Glucoside, a New Lignan from Hemistepta lyrata

Yu Lin REN, Jun Shan YANG

中国化学快报. 2002, 13(09): 859-861.

摘要 ( )

可视化

From the ethanolie Extract of the whole plant of Hemistepta lyrata Bunge.,a new lignan, named hemislin B Glucoside,has been isolated as α-(trans-3-methoxy-4-O-β-D-glucopyranosylbenzylidene)-β-(3,4-dimethoxybenzyl)-γ-butyrolactone. Its structure has been established on the basis of UV, IR, FABMS,¹H-NMR,¹³C-NMR, HMQC and HMBC speetral analysis.

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Two New Aporphine Alkaliods from Fissistigma bracteolatum

Yu DENG, Jin CHEN, Feng E WU

中国化学快报. 2002, 13(09): 862-864.

摘要 ( )

可视化

1,2-methylenedioxy-9-methoxy-N-methoxycarbonyl-aporphine and 1,2-methylenedioxy-8,9-dimethoxy-N-methoxycarbonyl-aporphine, two new alkaloids possessing a N-(methoxy carbonyl) group have been isolated from the stems of Fssistigma bracteolatum. Their structures were established on the basis of spectral analysis.

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Biphenyl Ferulate from Glehnia littoralis

Zhong YUAN, Shigetoshi KADOTA, Xian LI

中国化学快报. 2002, 13(09): 865-866.

摘要 ( )

可视化

From the underground parts of Glehnia littoralis Fr. Schmidt ex Miquel (Umbelliferae), a new compound named glehnilate was obtained. Its structure was determined by analysis of its spectral data.

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Electrochemical Determination of Cortisol by Capillary Electrophoretic Enzyme Immunoassay

Min JIA, Wen Rui JIN

中国化学快报. 2002, 13(09): 867-870.

摘要 ( )

可视化

An electrochemical method for detection of cortisol based on capillary electrophoretic enzyme immunoassay has been developed. A limit of detection of 1.7×10^-9 mol/L was obtained.

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Determination of Thyroxine with Capillary Electrophoretic Enzyme Immunoassay

Zhi Hui HE, Wen Rui JIN

中国化学快报. 2002, 13(09): 871-873.

摘要 ( )

可视化

A Capillary electrophortic enzyme linked immunoassay with electrochemical detection (CE-EIA-ED) has been developed. The method can be used to determine thyroxine with a limit of 3.8×10^-9 mol/L.

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Monitoring Homovanillic Acid and Vanillylmandelic Acid in Human Urine by Capillary Electrophoresis with Electrochemical Detection

Xiu Jun LI, Wen Rui JIN

中国化学快报. 2002, 13(09): 874-876.

摘要 ( )

可视化

A simple, rapid and low-cost method of separation and determination of homovanillic acid and vanillylmandelic acid in human urine was developed based on capillary zone electrophoresis/amperometric detection with high sensitivity and good resolution.

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Optimized Separation of Nine Xanthones by Microemulsion Electrokinetic Chromatography

Tao BO, Hu Wei LIU, Ke An LI

中国化学快报. 2002, 13(09): 877-880.

摘要 ( )

可视化

A microemulsion electrokinetic chromatography method has been firstly used for the separation of the therapeutically important xanthones from Securidaca inappendiculata. The separation of the nine xanthones was systematically optimized with respect to pH, composition of microemulsion, addition of cyclodextrins, applied voltage and column temperature. Baseline separation was successfully achieved for the nine xanthones, which was also compared with that by micellar electrokinetic chromatography

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Sulfonated Polyetherimide and Its Membranes

Li Qiang SHEN, Zhi Kang XU, You Yi XU

中国化学快报. 2002, 13(09): 881-882.

摘要 ( )

可视化

Polyetherimide (PEI) was sulfonated by chlorosulfonic acid for the first time. The sulfonated products were characterized by FT-IR, DSC, ion exchange capacity and water sorption measurement. The hydrophilicity of PEI was improved by the sulfonation. The PEI was blended with the sodium salt form of sulfonated PEI (SPEI) to prepare microporous membranes. The morphologies of the membranes were studied with Scanning Electron Microscope (SEM).

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Polyurethane Molecular Stamps for the in situ Synthesis of DNA Microarray

Nong Yue HE, Chun YANG, Zheng Chun LIU, Zu Hong LU

中国化学快报. 2002, 13(09): 883-886.

摘要 ( )

可视化

Fabrication of polyurethane molecular stamps (PU stamps) based on polypropylene glycol (PPG) and toluene diisocyanate (TDI), using 3,3'-dichloro-4,4'-methylenedianiline (MOCA) as the crosslinker, is reported. It was shown from the contact angle measurement that PU stamps surface has good affinity with acetonitrile, guaranteeing the well distribution of DNA monomers on patterned stamps. Laser confocal fluorescence microscopy images of oligonucleotide arrays after hybridization confirmed polyurethane is an excellent material for molecular stamps when transferring polar chemicals and conducting reactions on interfaces by stamping.

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Orientations of Rare-earth-containing Heteropolyoxometalates with Different Sizes in the Interlayer of Synthetic Multibilayer Films

Yong Hui WANG, Xin Long WANG, Chang Wen HU, En Bo WANG

中国化学快报. 2002, 13(09): 887-890.

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可视化

Three rare-earth-containing heteropolyoxometalates with different sizes, Na₉[Eu(W₅O₁₈)₂], K₁₃[Eu(SiW₁₁O₃₉)₂], and K₁₇[Eu(P₂W₁₇O₆₁)₂], have been incorporated by self-assembly into the interlayer of synthetic multibilayer films of dimethyldioctadecylammonium chloride and exhibited different orientations.

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Preparation and Photocatalytic Characterization of Nanoporous TiO₂

Xue Ping LI, Jing Bo ZHANG, Fen YIN, Yuan LIN, Xu Rui XIAO

中国化学快报. 2002, 13(09): 891-892.

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可视化

Nanoporous TiO₂ photocatalysts were prepared by use of controlled drying method with surfactants. The surface area and porous properties are dependent on the chain length of incorporated surfactant cation. The TiO₂ materials prepared in the presence of surfactant molecules during the gel formation exhibit much higher photocatalytic activity than that prepared in the absence of surfactants.

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Nonlinear Optical Properties of Tri-nuclear Transition Metal Clusters M-μ-S)s-M'(M=Mo,W;M'=Cu,Ag,Au)

Xi Hua CHEN, Ke Chen WU, Jaap G. SNIJDERS, Chen Sheng LIN

中国化学快报. 2002, 13(09): 893-896.

摘要 ( )

可视化

The static polarizabilities and the second-order hyperpolarizabilities of a series of tri-nuclear metal cluster models MS₄(M'PPh₃)₂(M'PPh₃) (M=Mo,W;M'=Cu, Ag, Au) have been calculated within the first-principle theoretical framework. The model clusters have two fragments of rhombic units and it is the charge transfer from one of these moieties to the other that is responsible for nonlinear optical property. This kind of electronic delocalization, differentiated from that of planar π-system, is very interesting and is worthy for further investigation.

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Biogenic Isoprene Emission Mechanism from ¹³CO₂ Exposure Experiments

Min SHAO

中国化学快报. 2002, 13(09): 897-900.

摘要 ( )

可视化

Biogenic isoprene emissions have been believed to be from only photosynthesis processes in plant. However nocturnal isoprene emission from pine is detected. And by feeding ¹³CO₂ to plants, it is found that both photosynthesis pathway and light independent processes contribute to isoprene emissions.

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Enhancement of Formation of Polar Microenvironment in Polymer by Compressed CO₂

Rui ZHANG, Jun HE, Jun LIU, Bu Xing HAN, Guan Ying YANG

中国化学快报. 2002, 13(09): 901-902.

摘要 ( )

可视化

The copolymer (EO)₂₂(PO)₅₂(EO)₂₂ in p-xylene can solubilize much more water in the presence of compressed CO₂ than the case without CO₂.

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A Novel Biomass Supported Na₂CO₃ System for Flue Gas Desulfurization

Hong Shan SHANG, Yuan KOU, Fan YANG

中国化学快报. 2002, 13(09): 903-906.

摘要 ( )

可视化

The breakthrough and stoichiometric SO₂ adsorption efficiencies of a biomass supported Na₂CO₃ system (80 wt %Na₂CO₃/straw) have reached 48.9% and 80.6% respectively at a desulfurization temperature of 80℃.

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Dynamic Structure of Mo-O Species in Ag-Mo-P-O Catalyst for Oxidative Dehydrogenation of Propane

Xin ZHANG, Hui Lin WAN, Wei Zheng WENG, Xiao Dong YI

中国化学快报. 2002, 13(09): 907-910.

摘要 ( )

可视化

The dynamic structure of Mo-O species in Ag-Mo-P-O catalyst was studied by in situ confocal microprobe laser Raman spectroscopy (LRS) and catalytic test. The results indicate Mo-O species of MoO₃ transformed to Mo-O species of AgMoO₂PO₄ in C₃H₈/O₂/N₂ (3/1/4) flow at 773 K. This behavior is closely relative to oxidative dehydrogenation of propane and intrinsic properties of Mo-O species. The Mo-O species of AgMoO₂PO₄ may be active species for oxidative dehydrogenation of propane.

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Studies of the Effects of Alkali Metal Oxides Promoter on the Oxidative Methylation of Toluene with Methane over KY Zeolite Catalysts

Ling Ping ZHOU, Wei LI, He Xuan LI, Ke Yi TAO

中国化学快报. 2002, 13(09): 911-914.

摘要 ( )

可视化

The toluene conversion, the selectivity to styrene and ethylbenzene (C₈ selectivity) in the oxidative methylation of toluene with methane have been studied comparatively for the KY zeolite catalyst promoted with Li₂O, Na₂O, K₂O, and Cs₂O respectively. It was found that the effect of promoter decreased in the order:Cs₂O > Na₂O > Li₂O > K₂O.

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A Novel Organic-Inorganic Complex:Synthesis and Crystal Structure of [Ca(DMSO)₅(H₂O)]₂SiMo₁₂O₄₀

Jing Ping WANG, Qiang WU, Jing Yang NIU

中国化学快报. 2002, 13(09): 915-918.

摘要 ( )

可视化

A novel organic-inorganic complex [Ca(DMSO)₅(H₂O)]₂SiMo₁₂O₄₀ was synthesized from CaCl₂, DMSO and H₄SiMo₁₂O₄₀·nH₂O in mixed solvent of acetonitrile and water. Its structure was characterized with elemental analysis, IR and X-ray diffraction analysis.

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2002年, 第13卷, 第09期　刊出日期：2002-09-20

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2002年, 第13卷, 第09期 刊出日期：2002-09-20

2002年, 第13卷, 第09期　刊出日期：2002-09-20