bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mechanistic Origin of Ligand‐Controlled Regioselectivity in Pd‐Catalyzed CH Activation/Arylation of Thiophenes
Authors: Tang Shi‐Ya , Guo Qing‐Xiang , Fu Yao 
Published: November 2011

AbstractThe use of ligands to control regioselectivity in transition‐metal‐catalyzed CH activation/functionalization is a highly desirable but challenging task. Recently, Itami et al. reported an important finding relating to Pd‐catalyzed ligand‐controlled α/β‐selective CH arylation of thiophenes. Specifically, the use of the 2,2′‐bipyridyl ligand resulted in α‐arylation, whereas the use of the bulky fluorinated phosphine ligand P[OCH(CF3)2]3 resulted in β‐arylation. Understanding of this surprising ligand‐controlled α/β‐selectivity could provide important insights into the development of more efficient catalyst systems for selective CH arylation, and so we carried out a detailed computational study on the problem with use of density functional theory methods. Three mechanistic possibilities—SEAr and migration, metalation/deprotonation, and Heck‐type arylation mechanisms—were examined. The results showed that the SEAr and migration mechanism might not be plausible, because the key Wheland intermediates could not be obtained. On the other hand, our study indicated that the metalation/deprotonation and Heck‐type arylation mechanisms were both involved in Itami’s reactions. In the metalation/deprotonation pathway the α‐selective product (C5‐product) was preferred, whereas in the Heck‐type arylation mechanism the β‐selective product (C4‐product) was favored. The ligands played crucial roles in tuning the relative barriers of the two different pathways. In the 2,2′‐bipyridyl‐assisted system, the metalation/deprotonation pathway was energetically advantageous, leading to α‐selectivity. In the P[OCH(CF3)2]3‐assisted system, on the other hand, the Heck‐type arylation mechanism was kinetically favored, leading to β‐selectivity. An interesting finding was that P[OCH(CF3)2]3 could produce a CH⋅⋅⋅O hydrogen bond in the catalyst system, which was crucial for stabilization of the Heck‐type transition state. In comparison, this CH⋅⋅⋅O hydrogen bond was absent with the other phosphine ligands [i.e., P(OMe)3, PPh3, PCy3] and these phosphine ligands therefore favored the metalation/deprotonation pathway leading to α‐selectivity. Furthermore, in this study we have provided theoretical evidence showing that the Heck‐type arylation reaction could proceed through an anti‐β‐hydride elimination process.
Assembling Phthalocyanine Dimers through a Platinum(II) Acetylide Linker
Authors: Jiménez Angel J. , Marcos M. Luisa , Hausmann Anita , Rodríguez‐Morgade M. Salomé , Guldi Dirk M. , Torres Tomás 
Published: November 2011

AbstractPhthalocyanine (Pc) dimers connected through trans‐platinum(II) diacetylide linkers have been prepared by reaction of the corresponding ethynylphthalocyanines with trans‐bis(triethylphosphine)platinum(II) chloride. Special emphasis was placed on the analysis of the ground‐ and excited‐state features of these compounds in relation to butadiyne‐bridged Pc dimers and the corresponding monomers. Both ZnII‐containing Pc dimers exhibit long‐lived triplet excited states. The insertion of σ‐bonded trans‐platinum(II) diacetylide spacers decoupled the two Pc groups and led to an appreciable acceleration (by a factor of up to 10) of the radiative and nonradiative decay rate of the singlet and triplet excited states.
Multifunctional and Reactive Enantiopure Organometallic Helicenes: Tuning Chiroptical Properties by Structural Variations of Mono‐ and Bis(platinahelicene)s
Authors: Anger Emmanuel , Rudolph Mark , Norel Lucie , Zrig Samia , Shen Chengshuo , Vanthuyne Nicolas , Toupet Loïc , Williams J. A. Gareth , Roussel Christian , Autschbach Jochen , Crassous Jeanne , Réau Régis 
Published: November 2011

AbstractAcetylacetonato‐platina[6]‐ and ‐platina[7]helicenes have been prepared from 2‐pyridyl‐substituted benzophenanthrene ligands by following a two‐step cycloplatination reaction. The photophysical properties (UV‐visible absorption and emission behavior) and chiroptical properties (circular dichroism and molar rotation) of the resolved enantiomers have been measured. These metallahelicenes constitute a novel family of easily accessible helicene derivatives that exhibit large and tuneable chiroptical properties that can be rationalized theoretically and compared to the parent [6]‐ and [7]carbohelicenes. Furthermore, they are red phosphors at room temperature and their large chiroptical properties can be modulated by oxidation of the metal center to PtIV. Hetero‐ and homochiral diastereomeric bis(metallahelicene)s that possess a rare PtIIIPtIII scaffold bridged by benzoato ligands have also been prepared. It is shown that the heterochiral (P,M)‐bis(PtIII–[6]helicene) 9 a1 can isomerize into the homochiral (P,P)‐ and (M,M)‐bis(PtIII–[6]helicene) 9 a2. Spectral assignments and an analysis of the optical rotation of these systems were made with the help of time‐dependent density functional theory. The calculations highlight the contributions of the metal centers to the chiroptical properties. For 9 a1 and 9 a2, σ–π conjugation between the helicenes and the PtPt moiety may contribute strongly to the optical rotation and electronic circular dichroism.
Synthesis, Crystal and Electronic Structures, and Magnetic Properties of LiLn9Mo16O35 (Ln=La, Ce, Pr, and Nd) Compounds Containing the Original Cluster Mo16O36
Authors: Gougeon Patrick , Gall Philippe , Cuny Jérôme , Gautier Régis , Le Pollès Laurent , Delevoye Laurent , Trébosc Julien 
Published: November 2011

AbstractThe new compounds LiLn9Mo16O35 (Ln=La, Ce, Pr, and Nd) were synthesized from stoichiometric mixtures of Li2MoO4, Ln2O3, Pr6O11 or CeO2, MoO3, and Mo heated at 1600 °C for 48 h in a molybdenum crucible sealed under a low argon pressure. The crystal structure, determined from a single crystal of the Nd member, showed that the main building block is the Mo16O36 unit, the Mo16 core of which is totally new and results from the fusion of two bioctahedral Mo10 clusters. It can also be viewed as a fragment of an infinite twin chain of edge‐sharing Mo6 octahedra. The Mo16O36 cluster units share some oxygen atoms to form infinite chains running parallel to the b axis, which are separated by the rare‐earth and lithium cations. 7Li‐NMR experiments, carried out at high field on the nonmagnetic LiLa9Mo16O35, provided insights into the local environment of the lithium ions. Magnetic susceptibility measurements confirmed the trivalent oxidation state of the magnetic rare‐earth cations and indicated the absence of localized moments on the Mo16 clusters. The electronic structure of the LiLn9Mo16O35 compounds was analyzed using molecular and periodic quantum calculations. The study of the molecular orbital diagrams of isolated Mo16O36 models allowed the understanding of this unique metallic architecture. Periodic density functional theory calculations demonstrated that few interactions occur between the Mo16 clusters, and predicted semiconducting properties for LiLn9Mo16O35 as a band gap of 0.57 eV was computed for the lanthanum phase.
ChemInform Abstract: Crystal Structure, Charge Transport, and Magnetic Properties of MnSb2Se4.
Authors: Djieutedjeu Honore , Makongo Julien P. A. , Rotaru Aurelian , Palasyuk Andriy , Takas Nathan J. , Zhou Xiaoyuan , Ranmohotti Kulugammana G. S. , Spinu Leonard , Uher Citrad , Poudeu Pierre F. P. 
Published: November 2011

AbstractThe title compound is synthesized by solid state reaction of a stoichiometric mixture of the elements (573 K for 48 h and 773 K for 72 h).
ChemInform Abstract: Crystal Water Molecules as Magnetic Tuners in Molecular Metamagnets Exhibiting Antiferro—Ferro—Paramagnetic Transitions.
Authors: Herchel Radovan , Tucek Jiri , Travnicek Zdenek , Petridis Dimitris , Zboril Radek 
Published: November 2011

AbstractCompounds (III)—(V) are characterized by 57Fe Moessbauer spectroscopy, single crystal XRD for (III) and (V), and magnetization measurements to study the effects of the number of crystal water molecules on the magnetic behavior.
ChemInform Abstract: Aluminum Germanides of the Divalent Lanthanoides Eu and Yb: Synthesis, Structural Chemistry and Chemical Bonding.
Authors: Bauer Britta , Roehr Caroline 
Published: November 2011

AbstractThe new compounds Eu3Al2Ge4 (I), Eu3Al1.8Ge2.2 (II), Yb2AlGe3 (III), and Yb17Al8Ge19 (IV) are synthesized by melting mixtures of the elements and their structures are determined by single crystal XRD.
ChemInform Abstract: Ternary Antimonides Ln2Ir3Sb4 (Ln: La, Ce, Pr, Nd).
Authors: Schaefer Konrad , Hermes Wilfried , Rodewald Ute Ch. , Hoffmann Rolf‐Dieter , Poettgen Rainer 
Published: November 2011

AbstractThe title compounds are obtained from stoichiometric melts of the elements and their structure is determined by single crystal XRD.
ChemInform Abstract: Diastereoselective Preparation of (S)‐(1,4,4‐Trimethylpyrrolidin‐3‐yl)amine, a New Chiral 1,2‐Diamine for Thiourea‐Type Organocatalysts.
Authors: Camps Pelayo , Galdeano Carles , Munoz‐Torrero Diego , Rull Jordi , Calvet Teresa , Font‐Bardia Merce 
Published: November 2011

AbstractPTU is used in several enantioselective Michael reactions of trans‐β‐nitrostyrene (I) with 1,3‐dicarbonyl compounds.
ChemInform Abstract: Rhodium(I)‐Catalyzed Ene—Allene—Allene [2 + 2 + 2] Cycloadditions: Stereoselective Synthesis of Complex trans‐Fused Carbocycles.
Authors: Brusoe Andrew T. , Alexanian Erik J. 
Published: November 2011

AbstractA variety of trans‐fused hydrindans and decalins is synthesized with complete stereochemistry, except for the (Z)‐isomer (IV).
ChemInform Abstract: The Intramolecular Asymmetric Allylation of Aldehydes via Organo‐SOMO Catalysis: A Novel Approach to Ring Construction.
Authors: Pham Phong V. , Ashton Kate , MacMillan David W. C. 
Published: November 2011

AbstractSelective oxidation of chiral enamines generated in situ by condensation of an aldehyde and a secondary amine catalyst, and subsequent cyclization provide a new approach to five‐, six‐ and seven‐membered carbocycles.
ChemInform Abstract: Unexpected Formation of (E)‐4‐Alkene 1,3‐Diketones from the Three‐Component Reaction of Lithium Selenolates with 1‐(1‐Alkynyl)cyclopropyl Ketones and Aldehydes.
Authors: Xu Jianfeng , Wu Luling , Huang Xian 
Published: November 2011

AbstractThe diketones can smoothly be converted into isoxazoles, pyrazoles, and other derivatives like (VII).
ChemInform Abstract: Stereospecific Synthesis of syn‐α‐Oximinoamides by a Three‐Component Reaction of Isocyanides, syn‐Chlorooximes, and Carboxylic Acids.
Authors: Pirali Tracey , Mossetti Riccardo , Galli Simona , Tron Gian Cesare 
Published: November 2011

AbstractA small library of biologically relevant title compounds is prepared.
ChemInform Abstract: Homologous Mukaiyama Reactions via Trapping of the Nazarov Intermediate with Silyloxyalkenes.
Authors: Wu Yen‐Ku , McDonald Robert , West F. G. 
Published: November 2011

AbstractThe domino reaction of various 1,4‐pentadien‐3‐ones and silyloxyalkenes results in formation of 1,4‐dicarbonyl products bearing highly substituted cyclopentanones with up to five new stereocenters.
ChemInform Abstract: Cu‐Mediated Chemoselective Trifluoromethylation of Benzyl Bromides Using Shelf‐Stable Electrophilic Trifluoromethylating Reagents.
Authors: Kawai Hiroyuki , Furukawa Tasuya , Nomura Yoshinori , Tokunaga Etsuko , Shibata Norio 
Published: November 2011

AbstractThe reaction is general and tolerates various functional groups.
ChemInform Abstract: Reduction of Hydrazines to Amines with Aqueous Solution of Titanium(III) Trichloride.
Authors: Zhang Yan , Tang Qiang , Luo Meiming 
Published: November 2011

AbstractThe new method is compatible with C=C, Bn—N, Cbz—N‐ and Ac—N bonds and proceeds under a broad pH range from acidic to neutral and basic conditions to afford the corresponding primary and secondary amines.
ChemInform Abstract: Ligand‐Free Highly Effective Iron/Copper Cocatalyzed Formation of Dimeric Aryl Ethers or Sulfides.
Authors: Qu Xiaoming , Li Tingyi , Zhu Yan , Sun Peng , Yang Hailong , Mao Jincheng 
Published: November 2011

AbstractThe Fe/Cu cocatalyzed coupling of diiodoarenes (I) with phenols (IV) or benzenethiol (II) provides an efficient access towards dimeric arylethers (V) or thioethers (III).
ChemInform Abstract: Copper‐Catalyzed Rearrangement of Oximes into Primary Amides.
Authors: Sharma Sumeet K. , Bishopp Simon D. , Allen C. Liana , Lawrence Ruth , Bamford Mark J. , Lapkin Alexei A. , Plucinski Pawel , Watson Robert J. , Williams Jonathan M. J. 
Published: November 2011

AbstractThe process is efficient under thermal and microwave conditions in the presence of Cu(O‐Ac)2.
ChemInform Abstract: Vanadium‐Catalyzed Enantioselective Oxidation of Allyl Sulfides.
Authors: Zeng Qingle , Gao Yuxing , Dong Junyu , Weng Wen , Zhao Yufen 
Published: November 2011

AbstractAllyl and cinnamyl sulfides (I) are efficiently converted into chiral allyl sulfoxides using a new vanadyl complex of 3,5‐diiodosalicylidene tert‐leucinol.
ChemInform Abstract: New Ligands that Promote Cross‐Coupling Reactions Between Aryl Halides and Unactivated Arenes.
Authors: Qiu Yatao , Liu Yanghan , Yang Kai , Hong Wenkun , Li Zheng , Wang Zhaoyang , Yao Zhiyi , Jiang Sheng 
Published: November 2011

AbstractA wide range of aromatic and heteroaromatic aryl iodides and bromides react with arenes using quinoline‐1‐amino‐2‐carboxylic acid as a catalyst to afford the corresponding cross‐coupling products.
ChemInform Abstract: Highly Efficient Synthesis of β‐Amino Ketones via Direct Mannich‐Type Reaction Catalyzed by Acidic Ionic Liquid.
Authors: Zhang Dong‐Nuan , Li Ji‐Tai , Song Ya‐Li , Chen Guo‐Feng 
Published: November 2011

AbstractAn ionic liquid‐catalyzed one‐pot three‐component Mannich‐type reaction of aromatic aldehydes, aromatic amines and cyclohexanone is presented.
ChemInform Abstract: Palladium‐Catalyzed Oxidative Rearrangement of Diaryl Alkenyl Carbinols to β,β‐Diaryl α,β‐Unsaturated Ketones.
Authors: Rosa David , Orellana Arturo 
Published: November 2011

AbstractThe reaction proceeds with complete stereoselectivity when a substrate bears one ortho‐substituted aromatic ring but is not sensitive to electronic effects.
ChemInform Abstract: 3‐(Hetero)aryl‐4‐indolylamino‐α‐tetralones by Diastereoselective Internal Redox Cyclization: An “Azaenamine” Conjugate Addition.
Authors: Ghavtadze Nugzar , Narayan Rishikesh , Wibbeling Birgit , Wuerthwein Ernst‐Ulrich 
Published: November 2011

AbstractTreatment of hydrazones of type (I) with BF3·SMe2 is found to allow new and diastereoselective access to biologically important trans‐substituted tetralones like (II).
ChemInform Abstract: Intramolecular Friedel—Crafts Alkylation of Chalcone Epoxides Using Indium(III) Chloride as an Efficient Catalyst.
Authors: Ahmed Naseem , Babu V. Venkata , Kumar Harendra 
Published: November 2011

AbstractInCl3 is explored as the most efficient catalyst for the preparation of highly functionalized cis‐2‐hydroxyindanones.
ChemInform Abstract: Alkali Metal Mediated Zincation of N‐Heterocyclic Substrates Using the Lithium Zincate Complex, (THF)Li(TMP)Zn(tBu)2 and Applications in in situ Cross‐Coupling Reactions.
Authors: Blair Victoria L. , Blakemore David C. , Hay Duncan , Hevia Eva , Pryde David C. 
Published: November 2011

AbstractThe direct regioselective zincation is studied and the resulting zinc organics are quenched with iodine or employed in Pd‐catalyzed Negishi cross‐coupling reactions.
ChemInform Abstract: Regioselective Transformation of O‐Propargylic Arylaldoximines to Four‐Membered Cyclic Nitrones by Copper‐Catalyzed Skeletal Rearrangement.
Authors: Nakamura Itaru , Araki Toshiharu , Zhang Dong , Kudo Yu , Kwon Eunsang , Terada Masahiro 
Published: November 2011

AbstractThe reaction proceeds via tandem [2,3]‐rearrangement of the O‐propargylic arylaldoximes and 4π‐electrocyclization of the intermediate N‐allenylnitrones.
ChemInform Abstract: Alternative Pathways for Heck Intermediates: Palladium‐Catalyzed Oxyarylation of Homoallylic Alcohols.
Authors: Zhu Chen , Falck John R. 
Published: November 2011

AbstractOxidative Heck arylation of homoallylic alcohols occurs in the presence of TFA affording α‐aryltetrahydrofurans in good yields and regioselectivities.
ChemInform Abstract: Rh‐Catalyzed Transannulation of N‐Tosyl‐1,2,3‐triazoles with Terminal Alkynes.
Authors: Chattopadhyay Buddhadeb , Gevorgyan Vladimir 
Published: November 2011

AbstractThe reaction is applied to electron‐rich terminal aryl alkynes including sterically congested ones and to triazoles with aromatic substituents, ester or alkyl groups to produce substituted N‐Tos‐pyrrole derivatives.
ChemInform Abstract: Microwave‐Assisted Synthesis of Indole‐Annulated Dihydropyrano[3,4‐c]chromene Derivatives via Hetero‐Diels—Alder Reaction.
Authors: Jha Mukund , Guy Stephanie , Chou Ting‐Yi 
Published: November 2011

AbstractKnoevenagel condensation of salicylaldehyde derivatives with indolin‐3‐ones affords the precursors of type (III) with yields <85%.
ChemInform Abstract: Tetrasubstituted 2‐Imidazolones via Ag(I)‐Catalyzed Cycloisomerization of Propargylic Ureas.
Authors: Peshkov Vsevolod A. , Pereshivko Olga P. , Sharma Sweta , Meganathan Thirumal , Parmar Virinder S. , Ermolat'ev Denis S. , Van der Eycken Erik V. 
Published: November 2011

AbstractA new and efficient one‐pot method to prepare tri‐ and tetrasubstituted 2‐imidazoles is reported.
ChemInform Abstract: A Simple and Efficient Method for the Synthesis of Highly Substituted Imidazoles Using 3‐Aroylquinoxalin‐2(1H)‐ones.
Authors: Mamedov Vakhid A. , Zhukova Nataliya A. , Beschastnova Tat'yana N. , Gubaidullin Aidar T. , Rakov Dimitry V. , Rizvanov Il'dar Kh. 
Published: November 2011

AbstractBenzoylquinoxalinone (I) is used as an hetero analogue of α‐diketones in the three‐component reaction.
ChemInform Abstract: A Multicomponent Coupling Reaction Induced by Insertion of Arynes into the C=O Bond of Formamide.
Authors: Yoshioka Eito , Kohtani Shigeru , Miyabe Hideto 
Published: November 2011

AbstractSynthesis of various chromene and coumarin derivatives is achieved by three‐component coupling of aryne precursors, dimethylformamide and active methylenes under neutral conditions.
ChemInform Abstract: Synthesis of Some Fluorine‐Containing Pyridinealdoximes of Potential Use for the Treatment of Organophosphorus Nerve‐Agent Poisoning.
Authors: Timperley Christopher M. , Banks R. Eric , Young Ian M. , Haszeldine Robert N. 
Published: November 2011

AbstractA series of fluorine‐containing pyridinealdoximes is synthesized and evaluated for their potential for treating nerve agents poisoning.
ChemInform Abstract: UV Promoted Phenanthridine Syntheses from Oxime Carbonate Derived Iminyl Radicals.
Authors: McBurney Roy T. , Slawin Alexandra M. Z. , Smart Laura A. , Yu Yanping , Walton John C. 
Published: November 2011

AbstractOxime carbonates (I), (III), (V) and (VII) are found to be excellent precursors for the generation of iminyl radicals under UV irradiation.
ChemInform Abstract: Copper‐Catalyzed Tandem Reaction of Isocyanides with N‐(2‐Haloaryl)propiolamides for the Synthesis of Pyrrolo[3,2‐c]quinolin‐4‐ones.
Authors: Zhou Fengtao , Liu Jianguang , Ding Ke , Liu Jinsong , Cai Qian 
Published: November 2011

AbstractA new, simple, and efficient method is reported.
ChemInform Abstract: Synthesis and Evaluation of Highly Potent GABAA Receptor Antagonists Based on Gabazine (SR‐95531).
Authors: Iqbal Favaad , Ellwood Ryan , Mortensen Martin , Smart Trevor G. , Baker James R. 
Published: November 2011

AbstractThe compounds (VIa) and (VII) are highly potent GABAA receptor antagonists compared to the parent antagonist gabazine.
ChemInform Abstract: Synthesis and Substitution Reactions of 4(6)‐Chlorodihydropyrimidines.
Authors: Cho Hidetsura , Yasui Yoshizumi , Kobayashi Satoshi , Kwon Eunsang , Arisawa Mieko , Yamaguchi Masahiko 
Published: November 2011

AbstractCross‐coupling reactions at the 4‐position of dihydropyrimidine derivative (IV) are performed with organoboronic acids or triethylborane to afford dihydropyrimidines (VI), (IX), and (XI) having a variety of functional groups.
ChemInform Abstract: An Easy Entry into 2‐Halo‐3‐aryl‐4(3H)quinazoliniminium Halides from Heteroenyne‐Allenes.
Authors: Naganaboina Vijaya Kumar , Chandra Kusum Lata , Desper John , Rayat Sundeep 
Published: November 2011

AbstractThe method is general and is not sensitive to electronic effects of the substituents.
ChemInform Abstract: Annulation and Evaluation of Antibacterial Activity of the New Fused Tricyclic (5,5,6) Ring System of Pyrazolo[1,5‐c]‐1,2,4‐triazolo[4,3‐a]pyrimidines.
Authors: Atta Kamal F. M. , Marei Mohamed G. , Abd El‐Magiad Somia M. , El‐Nashar Faten H. A. 
Published: November 2011

AbstractReaction of pyrazolopyrimidines (I) with carbon disulfide (II) afford the new fused pyrazolotriazolopyrimidinethiones (III).
ChemInform Abstract: Copper‐Catalyzed Aerobic Oxidative Intramolecular Alkene C—H Amination Leading to N‐Heterocycles.
Authors: Lu Juyou , Jin Yibao , Liu Hongxia , Jiang Yuyang , Fu Hua 
Published: November 2011

AbstractThe process affords the synthetically valuable N‐heterocycles as scaffolds of natural products with high yields.
ChemInform Abstract: Ion Pair Receptor Based on Anion—π Interaction.
Authors: Chen Yin , Wang De‐Xian , Huang Zhi‐Tang , Wang Mei‐Xiang 
Published: November 2011

AbstractNovel azacrown (VI) is synthesized via a one‐pot reaction between triazine (I) and benzaldehyde (II), followed by condensation with diamine (IV) and reduction of the intermediate bisimine.
ChemInform Abstract: Sesquiterpenoids from the Formosan Soft Coral Lemnalia flava.
Authors: Su Jui‐Hsin , Lu Yi , Hung Wen‐Yu , Huang Chiung‐Yao , Chiang Michael Y. , Sung Ping‐Jyun , Kuo Yao‐Haur , Sheu Jyh‐Horng 
Published: November 2011

AbstractFour new nardosinane‐type sesquiterpenoids, named flavalins E (I), F (II), G (III), and H (IV), and two new nornardosinane‐type norsesquiterpenoids, named flavalins I (V) and J (VI), are isolated along with five known compounds.
ChemInform Abstract: A New Polyoxygenated Triterpene and Two New Aeginetic Acid Quinovosides from the Roots of Rehmannia glutinosa.
Authors: Lee So Young , Kim Ju Sun , Choi Ran Joo , Kim Yeong Shik , Lee Je‐Hyun , Kang Sam Sik 
Published: November 2011

AbstractThe polyoxygenated triterpene, named glutinolic acid (I), and the two aeginetic acid quinovosides (II) are tested for their ability to inhibit NO production in LPS‐treated RAW 264.7 cells.
ChemInform Abstract: Composite Constituent: Lactucenyl Acetate, a Novel Migrated Lupane Triterpenoid from Lactuca indica Revision of Structure of Tarolupenyl Acetate.
Authors: Shinozaki Junichi , Nakane Takahisa , Onodera Naoe , Takano Akihito , Masuda Kazuo 
Published: November 2011

AbstractThe new lupan triterpenoid lactucenyl acetate (I) is isolated together with six known triterpenoids.
ChemInform Abstract: Eudistomidins H—K, New β‐Carboline Alkaloids from the Okinawan Marine Tunicate Eudistoma glaucus.
Authors: Suzuki Teppei , Kubota Takaaki , Kobayashi Jun'ichi 
Published: November 2011

AbstractThe four new β‐carboline alkaloids, eudistomidins H‐K (I)—(III), are isolated and their structures are elucidated based on spectroscopic data.
ChemInform Abstract: 1,2,4‐Triazine Chemistry. Part 1. Orientation of Cyclization Reactions of Functionalized 1,2,4‐Triazine Derivatives
Authors: Abdel‐Rahman Reda Mohammady , Makki Mohammed Saleh Tawfik , Ali Tarik El‐Sayed , Ibrahim Magdy Ahmed 
Published: November 2011

AbstractReview: 58 refs.