bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Synthesis of Substituted Indoline and Carbazole by Benzyne‐Mediated Cyclization—Functionalization.
Authors: Noji Toshiharu , Fujiwara Hideto , Okano Kentaro , Tokuyama Hidetoshi 
Published: October 2013

AbstractThe preparation of multisubstituted indolines and carbazoles by a benzyne‐mediated cyclization—functionalization sequence is described.
ChemInform Abstract: Selective Sequential Cross‐Coupling Reactions on Imidazole Towards Neurodazine and Analogues.
Authors: Recnik Lisa‐Maria , Abd El Hameid Mohammed , Haider Maximilian , Schnuerch Michael , Mihovilovic Marko D. 
Published: October 2013

AbstractA synthesis of 2,4,5‐triarylated imidazoles is developed and applied to the preparation of neurodazine (XIb), a molecule affecting neuronal cell differentiation.
ChemInform Abstract: Triethylammonium Acetate‐Mediated Domino‐Knoevenagel‐hetero‐Diels—Alder Reaction: Synthesis of Some Angular Polyheterocycles.
Authors: Parmar Narsidas J. , Pansuriya Bhavesh R. , Barad Hitesh A. , Parmar Bhagyashri D. , Kant Rajni , Gupta Vivek K. 
Published: October 2013

AbstractThe title reaction is performed in triethylammonium acetate which acts as catalyst and solvent.
ChemInform Abstract: Copper‐Catalyzed Domino SN2′/Coupling Reaction: A Versatile and Facile Synthesis of Cyclic Compounds from Baylis—Hillman Acetates.
Authors: Niu Qingsheng , Mao Hui , Yuan Guodong , Gao Jilong , Liu Haiquan , Tu Yawei , Wang Xiaoxia , Lv Xin 
Published: October 2013

AbstractThis is a versatile and simple method for the synthesis of quinoline, pyridine, benzothiopyran, and naphthalene derivatives from readily available starting materials.
ChemInform Abstract: N‐Heterocyclic Carbene Catalyzed Oxidative Stannylation of Aldehydes: A Facile Entry to Organotin(IV) Carboxylates.
Authors: Reddi Rambabu N. , Malekar Pushpa V. , Sudalai Arumugam 
Published: October 2013

AbstractAerobic oxidation followed by stannylation of the resulting carboxylic acids allows the preparation of the target compounds.
ChemInform Abstract: Growth, Crystal Structure and Spectrum of a Novel Rare‐Earth Orthophosphate Crystal: Yb:LuPO4.
Authors: Zhong De‐gao , Teng Bing , Cao Li‐feng , Chao Wang , He Lin‐xiang , Li Jian‐hong , Zhang Shi‐ming , Li Yu‐yi 
Published: October 2013

AbstractLarge single crystals of the title compound are prepared from mixtures of Lu2O3, Yb2O3, and PbHPO4 (Pt crucible, 1350 °C, 16 h).
ChemInform Abstract: Intermetallic Compounds Ce4Ru3Ga3 and La3Ru2Ga2 with Crystal Structures of New Types.
Authors: Shablinskaya Ksenia , Murashova Elena , Kurenbaeva Zhanafiya , Yaroslavtsev Alexander , Seropegin Yurii , Kaczorowski Dariusz 
Published: October 2013

AbstractCe4Ru3Ga3 (I) and La3Ru2Ga2 (II) are synthesized by arc melting of the elements under Ar followed by annealing (873 K, 30 d).
ChemInform Abstract: Na8Lu2(CO3)6F2 and Na3Lu(CO3)2F2: Rare Earth Fluoride Carbonates as Deep‐UV Nonlinear Optical Materials.
Authors: Luo Min , Ye Ning , Zou Guohong , Lin Chensheng , Cheng Wendan 
Published: October 2013

AbstractThe two new title compounds (IV) and (V) are characterized by single crystal XRD, UV/VIS diffuse reflectance spectroscopy, second harmonic generation measurements, and DFT computations.
ChemInform Abstract: A Novel Co‐Precipitation Method for One‐Pot Fabrication of a Co—Ni Multiphase Composite Electrode and Its Application in High Energy‐Density Pseudocapacitors.
Authors: Han Joah , Roh Kwang Chul , Jo Mi Ru , Kang Yong‐Mook 
Published: October 2013

AbstractA multiphase composite film composed of Ni(OH)2 and Co(OH)2 is prepared electrochemically from LiOH solutions containing Co(NO3)2, Ni(NO3)2, and NH2OH (0.9 V, 25 °C, 24 h).
ChemInform Abstract: Magnetic, Transport and Electronic Properties of SmNi4Si Compound.
Authors: Falkowski M. , Pugaczowa‐Michalska M. , Kowalczyk A. 
Published: October 2013

AbstractPolycrystalline SmNi4Si samples are investigated by powder XRD, magnetic susceptibility, magnetization, electrical resistivity, specific heat measurements, and by DFT electronic structure calculations.
ChemInform Abstract: Silica Sulfuric Acid‐Catalyzed Syntheses of Calix[4]resorcinarenes.
Authors: Zhao Ling‐ling , Wan Yu , Huang Shu‐ying , Liu Gui‐xiang , Chen Liang‐feng , Yue Shu‐ning , Zhang Wen‐li , Wu Hui 
Published: October 2013

Abstract14 Title compounds of type (III) are prepared.
ChemInform Abstract: Highly Stereoselective Synthesis of Z‐Homoallylic Alcohols by Kinetic Resolution of Racemic Secondary Allyl Boronates.
Authors: Incerti‐Pradillos Celia A. , Kabeshov Mikhail A. , Malkov Andrei V. 
Published: October 2013

AbstractAn efficient kinetic resolution of secondary allyl bromides in the allylation of aldehydes is developed using a chiral binaphthyl derived phosphonic acid as the catalyst.
ChemInform Abstract: Synergistic Dual Activation Catalysis by Palladium Nanoparticles for Epoxide Ring Opening with Phenols.
Authors: Seth Kapileswar , Roy Sudipta Raha , Pipaliya Bhavin V. , Chakraborti Asit K. 
Published: October 2013

AbstractThe phenolysis of glycidyl ethers and other epoxides under utilization of Pd(II)‐chloride as precatalyst is described.
ChemInform Abstract: Copper‐Catalyzed Oxidation of Deoxybenzoins to Benzils under Aerobic Conditions.
Authors: Cacchi Sandro , Fabrizi Giancarlo , Goggiamani Antonella , Iazzetti Antonia , Verdiglione Rosanna 
Published: October 2013

AbstractThe process proceeds under neutral conditions using air as the oxidant and is tolerant to various functional groups.
ChemInform Abstract: cis‐2,3‐Disubstituted Cyclopropane 1,1‐Diesters in [3 + 2] Annulations with Aldehydes: Highly Diastereoselective Construction of Densely Substituted Tetrahydrofurans.
Authors: Yang Gaosheng , Sun Yongxian , Shen Yue , Chai Zhuo , Zhou Shuangliu , Chu Jiang , Chai Jun 
Published: October 2013

AbstractA facile and highly stereoselective synthesis to pentasubstituted tetrahydrofuran derivatives, which are not easily accessible by other methods, is presented.
ChemInform Abstract: Broensted Acid‐Controlled [3 + 2] Coupling Reaction of Quinone Monoacetals with Alkene Nucleophiles: A Catalytic System of Perfluorinated Acids and Hydrogen Bond Donor for the Construction of Benzofurans.
Authors: Hu Yinjun , Kamitanaka Tohru , Mishima Yusuke , Dohi Toshifumi , Kita Yasuyuki 
Published: October 2013

AbstractThe reaction can also be performed in the presence of fluorinated terephthalic acid as catalyst albeit products are obtained in somewhat lower yields.
ChemInform Abstract: Cu(OTf)2‐Catalyzed Asymmetric Friedel—Crafts Alkylation Reaction of Indoles with Arylidene Malonates Using Bis(sulfonamide)‐Diamine Ligands.
Authors: Wu Jing , Wang Dongping , Wu Fan , Wan Boshun 
Published: October 2013

AbstractIt is also possible to perform the reaction on large scale with only 2.5 mol% catalyst loading.
ChemInform Abstract: Engaging Isatins in Solvent‐Free, Sterically Congested Passerini Reaction.
Authors: Kaicharla Trinadh , Yetra Santhivardhana Reddy , Roy Tony , Biju Akkattu T. 
Published: October 2013

AbstractThe Passerini reaction of isatins (I) with isocyanides and carboxylic acids affords desired oxindole derivatives such as (IV) and (VI).
ChemInform Abstract: Synthesis and Antifungal Activity of 3‐(1,3,4‐Oxadiazol‐5‐yl)‐indoles and 3‐(1,3,4‐Oxadiazol‐5‐yl)methyl‐indoles.
Authors: Zhang Ming‐Zhi , Mulholland Nick , Beattie David , Irwin Dianne , Gu Yu‐Cheng , Chen Qiong , Yang Guang‐Fu , Clough John 
Published: October 2013

AbstractA modified synthetic route affords the novel title compounds.
ChemInform Abstract: A Convenient One‐Pot Access to Phenanthridinones via Suzuki—Miyaura Cross‐Coupling Reaction
Authors: Tanimoto Kouichi , Nakagawa Naomichi , Takeda Kazutaka , Kirihata Mitsunori , Tanimori Shinji 
Published: October 2013

Abstracto‐bromobenzoic acid methyl esters with o‐aminophenylboronic acids
ChemInform Abstract: A Palladium‐Catalyzed Coupling of 3‐Chloroquinoxalinones with Various Nitrogen‐Containing Nucleophiles.
Authors: Brachet Etienne , Peyrat Jean‐Francois , Brion Jean‐Daniel , Messaoudi Samir , Alami Mouad 
Published: October 2013

AbstractApplication of this general method is demonstrated in the synthesis of cannabinoid CB2 receptor antagonist (VIc).
ChemInform Abstract: Substituent‐Controlled Domino‐Henry‐hetero Diels—Alder Reaction: Synthesis of Polycyclic Nitronates.
Authors: Biswas Pritam , Ghosh Jaydip , Maiti Sourav , Banerjee Subhabrata , Bandyopadhyay Chandrakanta 
Published: October 2013

AbstractThe reaction of chromone‐3‐carbaldehydes (I) with nitromethane under conditions A) yields only functionalized nitroalkenes instead of the expected nitronates.
ChemInform Abstract: Palladium‐Catalyzed Ring‐Opening of Cyclopropyl Benzamides: Synthesis of Benzo[c]azepine‐1‐ones via C(sp3)—H Functionalization.
Authors: Ladd Carolyn L. , Roman Daniela Sustac , Charette Andre B. 
Published: October 2013

AbstractA new synthesis of biologically relevant benzo[c]azepins is achieved via a novel Pd/Ag‐catalyzed intramolecular cyclization of ortho halogenated N‐cyclopropyl benzamides.
ChemInform Abstract: Design of Medium Band Gap Ag—Bi—Nb—O and Ag—Bi—Ta—O Semiconductors for Driving Direct Water Splitting with Visible Light.
Authors: Wang Limin , Cao Bingfei , Kang Wei , Hybertsen Mark , Maeda Kazuhiko , Domen Kazunari , Khalifah Peter G. 
Published: October 2013

AbstractPolycrystalline “AgBiNb2O7” (I) and “Ag4/5Bi5/6Ta2O6.65” (II) are synthesized by solid state reaction of Ag2O, Bi2O3, Nb2O5, and Ta2O5 in molar ratios of 0.5:0.5:1 for (I) and 0.4:0.418:1 for (II), resp.
ChemInform Abstract: High Efficient Photocatalytic Selective Oxidation of Benzyl Alcohol to Benzaldehyde by Solvothermal‐Synthesized ZnIn2S4 Microspheres under Visible Light Irradiation.
Authors: Chen Zhixin , Xu Jingjing , Ren Zhuyun , He Yunhui , Xiao Guangcan 
Published: October 2013

AbstractHexagonal ZnIn2S4 samples are solvothermally synthesized from mixtures of ZnCl2, InCl3, and excess thiacetamide dispersed in EtOH (autoclave, 433 K, 24 h).
ChemInform Abstract: Mixed‐Valence Uranium(V,VI) and Uranyl Oxyhydroxides Synthesized under High‐Temperature, High‐Pressure Hydrothermal Conditions: Na5[U5O16(OH)2] and Na5[U5O17(OH)].
Authors: Liu Hsin‐Kuang , Lii Kwang‐Hwa 
Published: October 2013

AbstractThe mixed‐valence uranium(V,VI) oxyhydroxide Na5[U5O16(OH)2] is prepared via reduction of UO22+ under hydrothermal conditions using UO3, NaOH, Na2MoO4 (mineralizer), and Zn as reductant (autoclave, gold ampoule, 570 °C and 150 MPa, 2 d, 50% yield).
ChemInform Abstract: Exploring the Assembly of Supramolecular Polyoxometalate Triangular Morphologies with Johnson Solid Cores: [(MnII(H2O)3)2 (K@{α‐GeW10MnII2O38 }3)]19‐.
Authors: Molina Pedro I. , Miras Haralampos N. , Long De‐Liang , Cronin Leroy 
Published: October 2013

AbstractK8Li11 [(Mn(H2O)3)2 (K@{α‐GeW10Mn2O38}3)] ·35H2O is prepared by adding aqueous LiCl and MnCl2 to K8[γ‐GeW10O36]·6H2O under vigurous stirring (pH 7.6 adjusted with 1M NaOH, 80 °C, 10 min) followed by crystallization at 18 °C (21% yield based on W).
ChemInform Abstract: Cross Metathesis of Allyl Alcohols: How to Suppress and How to Promote Double Bond Isomerization.
Authors: Schmidt Bernd , Hauke Sylvia 
Published: October 2013

AbstractCross metathesis of allyl alcohols (I) and methyl acrylate (II) under standard conditions is accompanied by formation of ketones (IV), resulting from uncontrolled double bond isomerization.
ChemInform Abstract: Palladium‐Catalyzed Regioselective and Stereoselective Oxidative Heck Arylation of Allylamines with Arylboronic Acids.
Authors: Zhang Lingjuan , Dong Chaonan , Ding Chenjun , Chen Jing , Tang Weijun , Li Huanrong , Xu Lijin , Xiao Jianliang 
Published: October 2013

AbstractA general and convenient method for the oxidative Heck arylation of both N‐mono‐ and N,N‐diprotected allylic amines under mild conditions is developed.
ChemInform Abstract: Mild Rhodium(III)‐Catalyzed Direct C—H Allylation of Arenes with Allyl Carbonates.
Authors: Wang Honggen , Schroeder Nils , Glorius Frank 
Published: October 2013

AbstractAllylic carbonates are useful reagents for the ortho‐directed allylation of a variety of aromatic carboxylic N,N‐diisopropylamides in the presence of a Rh/Ag‐mixed catalyst.
ChemInform Abstract: Efficient Ruthenium‐Catalyzed S—S, S—Si and S—B Bond Forming Reactions.
Authors: Fernandez‐Salas Jose A. , Manzini Simone , Nolan Steven P. 
Published: October 2013

AbstractAn efficient and general method for synthesis of disulfides, thioboranes, and silylthioethers under mild dehydrogenation reaction conditions is presented.
ChemInform Abstract: Synthesis and Biological Evaluation of 4‐Arylphthalazones Bearing Benzenesulfonamide and Anti‐Inflammatory and Anticancer Agents.
Authors: Yaseen Shafiya , Ovais Syed , Bashir Rafia , Rathore Pooja , Samim Mohammed , Singh Surender , Nair Vinod , Javed Kalim 
Published: October 2013

AbstractThe synthesized compounds are tested for their anti‐inflammatory and anticancer activities.
ChemInform Abstract: Viologen as Catalytic Organic Reductant: Electro‐Reductive Dimerization of Aryl Bromides in a Pd/Viologen Double Mediatory System.
Authors: Kuroboshi Manabu , Shiba Takuya , Tanaka Hideo 
Published: October 2013

AbstractThe Pd‐catalyzed electro‐reductive coupling of aryl bromides is achieved using a small amount of viologen additive as an in situ recyclable organic reductant.
ChemInform Abstract: Asymmetric Synthesis of Trifluoromethylated Aziridines from CF3‐Substituted N‐tert‐Butanesulfinyl Ketimines.
Authors: Yang Yanmei , Huang Yangen , Qing Feng‐Ling 
Published: October 2013

AbstractChiral CF3‐substituted ketimines react with sulfur ylides generated in situ from iodide (I) to produce aziridines with good diastereoselectivties.
ChemInform Abstract: Synthesis of a Novel Class of Benzofurans via a Three‐Component, Regiospecific Intramolecular Heterocyclization Reaction.
Authors: Karami Bahador , Khodabakhshi Saeed , Hashemi Fatemeh 
Published: October 2013

AbstractAn operationally simple protocol is developed for the three component reaction of arylglyoxals, phenolic substrates, and benzamide in the presence of tungstate sulfuric acid as safe and recyclable solid catalyst to yield benzofuran derivatives.
ChemInform Abstract: Electrophilic Cyclization of o‐Anisole‐ and o‐Thioanisole‐Substituted Ynamides: Synthesis of 2‐Amidobenzofurans and 2‐Amidobenzothiophenes.
Authors: Kong Yulong , Yu Lian , Fu Lingzi , Cao Jian , Lai Guoqiao , Cui Yuming , Hu Ziqiang , Wang Guanhai 
Published: October 2013

AbstractA simple protocol allows the electrophilic cyclization of the title ynamides with iodine, NBS, or NCS to provide benzofurane and benzothiophene derivatives.
ChemInform Abstract: Regioselective Arene Halogenation Using the FAD‐Dependent Halogenase RebH.
Authors: Payne James T. , Andorfer Mary C. , Lewis Jared C. 
Published: October 2013

AbstractA biocatalytic method using the tryptophan‐7‐halogenase RebH is developed for the highly regioselective halogenation of indoles and electron rich naphthalenes.
ChemInform Abstract: Synthesis of New Aryl‐Substituted Tandospirone and Epiboxidine Analogues and Isoxazoline Derivatives.
Authors: Kulu Irem , Goksu Gokce , Sucu Bilgesu Onur , Kopruceli Asli , Ocal Nuket , Kaufmann Dieter E. 
Published: October 2013

AbstractNew tandospirone [cf.(IIIa)—(IIId)] and epiboxidine analogues [cf.
ChemInform Abstract: Synthesis and Biological Evaluation of Pyrazoline Derivatives Bearing an Indole Moiety as New Antimicrobial Agents.
Authors: Oezdemir Ahmet , Altintop Mehlika Dilek , Kaplancikli Zafer Asim , Turan‐Zitouni Guelhan , Karaca Huelya , Tunali Yagmur 
Published: October 2013

AbstractThe compound (IIIc) shows promising activity against K.
ChemInform Abstract: Pd‐Catalyzed N‐Arylation of 2‐Imidazolines Provides Convenient Access to Selective Cyclooxygenase‐2 Inhibitors.
Authors: Krasavin Mikhail 
Published: October 2013

AbstractVarious imidazole derivatives of type (III) and compound (X) are prepared with a Pd‐catalyzed N‐arylation as key step.
ChemInform Abstract: Synthesis of New N‐Substituted 5‐Arylidene‐2,4‐thiazolidinediones as Antiinflammatory and Antimicrobial Agents.
Authors: Nastasa Cristina , Tiperciuc Brindusa , Parvu Alina , Duma Mihaela , Ionut Ioana , Oniga Ovidiu 
Published: October 2013

AbstractThe products (III) are screened in vitro for their anti‐inflammatory activity and their antimicrobial activities against Gram‐positive and ‐negative bacteria and one fungal strain.
ChemInform Abstract: Pd‐Catalyzed ortho‐C—H Acylation/Cross Coupling of 2‐Arylbenzo[d]thiazoles with Aldehydes Using tert‐Butyl Hydroperoxide as Oxidant.
Authors: Wang Jian , Nie Ziyi , Li Yan , Tan Shuang , Jiang Jiantao , Jiang Pusheng , Ding Qiuping 
Published: October 2013

AbstractThis strategy can be used for the direct synthesis of aromatic ketones from aldehydes and is compatible with a variety of functional groups including electron‐donating and ‐withdrawing groups attached to both 2‐arylbenzo[d]thiazoles and aldehydes.
ChemInform Abstract: Highly Enantioselective [4 + 2] Annulation via Organocatalytic Mannich‐Reductive Cyclization: One‐Pot Synthesis of Functionalized Piperidines.
Authors: Kumar Indresh , Ramaraju Panduga , Mir Nisar A. , Singh Deepika , Gupta Vivek K. , Rajnikant Rajnikant 
Published: October 2013

AbstractThe practicability of the described method is illustrated by gram‐scale application and through the synthesis of a functionalized (‐)‐anabasine derivative (IV*).
ChemInform Abstract: InCl3‐Catalyzed Green Synthesis of 1H‐Pyrazolo[1,2‐b]phthalazine‐5,10‐diones under Solvent‐Free Conditions.
Authors: Reddy Mudumala Veeranarayana , Jeong Yeon Tae 
Published: October 2013

AbstractThe procedure allows the access to various biologically interesting title compounds in high yields within a short time.
ChemInform Abstract: Synthesis of 8,9‐Dihydro[1,2,4]triazolo[1,5‐a]quinazolin‐6(7H)‐one Derivatives.
Authors: Petrov A. A. , Kasatochkin A. N. 
Published: October 2013

AbstractThe title compounds (III) and (VI) are regioselectively obtained in a two‐component condensation of 2‐substituted 1H‐1,2,4‐triazol‐3‐amines (I) with 2‐acyl‐5,5‐dimethylcyclohexane‐1,3‐diones (II) and three‐component reaction of aminotriazole (Ia) with dimedone and dimethylformamide dimethyl acetal.
ChemInform Abstract: Microwave‐Assisted Synthesis and Bioactivities of Novel Quinoline Lactones.
Authors: Zheng Hui , Liu Juan , Shi Qiaoyue , Mei Yijia , Du Kui , Zhang Pengfei 
Published: October 2013

AbstractNewly synthesized title compounds (II) are screened for their antibacterial and antifungal activities (only few data given).
ChemInform Abstract: Nocapyrones H—J, 3,6‐Disubstituted α‐Pyrones from the Marine Actinomycete Nocardiopsis sp. KMF‐001.
Authors: Kim Min Cheol , Kwon Oh‐Wook , Park Jin‐Soo , Kim Sun Yeou , Kwon Hak Cheol 
Published: October 2013

AbstractNocapyrone H (Ia) reduces the pro‐inflammatory factor and shows stronger inhibitory effect on NO production than chrysin in lipopolysaccharide‐stimulated BV‐2 microglial cells.
ChemInform Abstract: Highly Uniform α‐NaYF4:Yb/Er Hollow Microspheres and Their Application as Drug Carrier.
Authors: Han Yunhua , Gai Shili , Ma Ping'an , Wang Liuzhen , Zhang Milin , Huang Shaohua , Yang Piaoping 
Published: October 2013

Abstractα‐NaYF4:Yb/Er hollow microspheres are prepared via a two‐step route.
Catalytic Mechanism of Cytochrome P450 2D6 for 4‐Hydroxylation of Aripiprazole: A QM/MM Study
Authors: Shi Rongwei , Li Weihua , Liu Guixia , Tang Yun 
Published: October 2013

AbstractDrug metabolism is an important issue in drug discovery. Understanding how a drug is metabolized in the body will provide helpful information for lead optimization. Cytochrome P450 2D6 (CYP2D6) is a key enzyme for drug metabolism and responsible for the metabolism of about one third marketed drugs. Aripiprazole is an atypical antipsychotic and metabolized by CYP2D6 to its hydroxylated form. In this study, a series of computational methods were performed to understand how CYP2D6 accomplishes the 4‐hydroxylation of aripiprazole. Molecular docking and molecular dynamics simulations were first performed to prepare the initial conformations for QM/MM calculations. The results revealed two possible conformations for the drug‐CYP2D6 complex. The ONIOM method for QM/MM calculations was then carried out to show detailed reaction pathways for the CYP2D6‐catalyzed aripiprazole hydroxylation reaction, which demonstrated that the dominant reactive channel was electrophilic and involved an initial attack on the π‐system of the dichlorophenyl group of aripiprazole to produce cation δ‐complex. Furthermore, the product complex for each conformation was thermodynamically stable, which is in good agreement with previous reports.
Synthesis and Anti‐HIV Activity of a Series of 6‐Modified 2′,3′‐Dideoxyguanosine and 2′,3′‐Didehydro‐2′,3′‐dideoxyguanosine Analogs
Authors: Xie Lujia , Yang Xiantao , Pan Delin , Cao Yingli , Cao Mou , Lin Guichun , Guan Zhu , Guo Ying , Zhang Lihe , Yang Zhenjun 
Published: October 2013

AbstractIn search of potential 2′,3′‐dideoxyguanosine (ddG) and 2′,3′‐didehydro‐2′,3′‐dideoxyguanosine (D4G) prodrugs, a series of 6‐modified ddG, D4G analogs were synthesized and evaluated for their anti‐HIV activities and cytotoxities in cell‐based assays. All analogs showed low cytotoxicities and some of them displayed benign anti‐HIV activities. The active triphosphate forms in vivo, ddGTP and D4TTP, were also synthesized by a novel and facile "one‐pot" method. The recognition of ddGTP and D4TTP by Taq, Therminater DNA polymerase and HIV reverse transcriptase (RT) incorporated in DNA/RNA strands were investigated by a non‐radioactivity method and Km were determined.
Synthesis, Biological Activity Evaluation and Molecular Modeling Study on the New Isoconessimine Derivatives as Acetylcholinesterase Inhibitors
Authors: Jin Guofei , Yang Zhongduo , Xue Weiwei , Sheng Jie , Shi Yin , Yao Xiaojun 
Published: October 2013

AbstractNew isoconessimine derivatives were synthesized from conessine (1) and evaluated as acetylcholinesterase (AChE) inhibitors. The derivatives were prepared via two reaction steps, N‐demethylation and nucleophilic substitution. All of the synthesized derivatives exhibited more potential anti‐acetylcholinesterase activities than conessine (1) (IC50=16 µmol·L−1) and isoconessimine (2) (IC50>300 µmol·L−1). Compound 7b (3β‐[methyl‐[2‐(4‐nitrophenoxy)ethyl]amino]con‐5‐enine) showed the most potent inhibitory activity with an IC50 of 110 nmol/L which is close to that of reference compound huperzine A (IC50=70 nmol/L). The mode of AChE inhibition by 7b was reversible and non‐competitive. In addition, molecular modeling was performed to explore the binding mode of inhibitor 7b at the active site of AChE and the results showed that 7b could be docked into the acetylcholinesterase active site and compound 7b had hydrophobic interactions with Trp279 and Leu282.