bluuebunny/crossref_metadata_2025_split huggingface dataset:
Congruence-Association Model and Experiments in Film Music: Toward Interdisciplinary Collaboration
Authors: Cohen Annabel J. 
Published: June 2015

Abstract
The article draws attention to the value of objective measurement of both human responses and soundtracks for validating conjectures about the role of film music. Based on empirical research on film music as well as ideas from film theory and cognitive science, the author’s Congruence-Association Model with Working Narrative (CAM-WN) is introduced as a means for organizing ideas about the role of music in film. The application of CAM-WN to the problem of unattended film music is reviewed, and the notion of subjective silence is examined in the context of spectrographic representation of film music. While empirical research with human participants is also encouraged, the complexity of the enterprise is highlighted by a list of questions to consider in advance. Interdisciplinary collaboration is suggested as a means for overcoming the complexity of film-music behavioral research, though it is not a panacea. The Lund University Film Studies Department offers an important example in this direction.
Deconstructing Incongruence: A Psycho-semiotic Approach toward Difference in the Film-Music Relationship
Authors: Ireland David 
Published: June 2015

Abstract
This article summarizes the incongruent perspective, a psycho-semiotic approach toward the study of film-music difference that is contextualized by poststructuralist thought. Examples are cited from empirical research conducted alongside the initial theoretical deconstruction to demonstrate the following: how the perspective theorizes various levels of film-music difference, and their impact upon perceiver experience and response; and the ways in which empirical studies can facilitate inter- and multidisciplinary conceptual deconstruction.
Le néoconservatisme canadien
Authors: Dorion-Soulié Manuel , Sanschagrin David 
Published: June 2015

Existe-t-il un néoconservatisme canadien ? De nombreux analystes de politique étrangère canadienne utilisent ce terme pour décrire le gouvernement Harper et l’« école de Calgary », sans toutefois conceptualiser précisément l’objet politique dont il est question. Certains affirment même qu’il s’agit d’une idéologie importée des États-Unis. Cet article montre d’abord la « reconnaissance » que les néoconservateurs américains accordent à leurs homologues canadiens, et vice versa, illustrant ainsi la proximité idéologique entre les deux néoconservatismes. Cependant, dans la deuxième portion de l’article est proposée une définition générique du néoconservatisme, montrant que, s’il est juste de parler de néoconservatisme pour décrire Harper et l’« école de Calgary », il ne faut pas y voir une influence américaine. Le néoconservatisme canadien a ses particularités et sa tradition propres.
La politique iranienne du Canada
Authors: Dumas Philippe 
Published: June 2015

L'élection du gouvernement Harper a généré une réflexion chez les chercheurs étudiant la politique étrangère canadienne. Leurs constats oscillant toujours entre continuité et rupture, d’autres contributions sont de mise afin d’alimenter le débat. Cet article répondra à la question suivante : La politique iranienne du Canada, telle qu’elle est formulée et mise en oeuvre, est-elle la manifestation d’une culture stratégique néocontinentaliste ? Cette proposition quant à l’émergence d’une vision néocontinentaliste sera mise à l’épreuve au regard de la politique iranienne du Canada. Évoquée par ce gouvernement comme un élément important de sa politique étrangère, la politique iranienne du Canada n’a été que très peu analysée jusqu’à aujourd’hui.
Le rôle de la gouvernance des clusters dans les capacités dynamiques d’absorption des PME
Authors: Bocquet Rachel , Mothe Caroline 
Published: June 2015

En combinant laKnowledge-Based View of Clusterset l’approche basée sur les capacités dynamiques, notre objectif est d’identifier la manière dont la structure de gouvernance d’un cluster peut accroître les capacités dynamiques d’absorption des entreprises membres. Une étude qualitative longitudinale auprès des membres de la gouvernance d’un pôle de compétitivité français à dominante PME montre le rôle clé de l’implication à la fois directe de la structure de gouvernance dans les actions individuelles et collectives, et indirecte en tant qu’intermédiaire entre les entreprises et les expertises utiles. Ce modèle original de management « intermédié » des connaissances présente d’importantes implications managériales.
Analysis of source characteristics of experimental gas burst and fragmentation explosions generated by rapid decompression of volcanic rocks
Authors: Arciniega‐Ceballos A. , Alatorre‐Ibargüengoitia M. , Scheu B. , Dingwell D. B. 
Published: June 2015

AbstractGas burst and fragmentation explosions induced by rapid decompression of volcanic rocks in a high‐pressure autoclave have been analyzed. We performed experiments from 4 to 20 MPa on (1) loose pyroclasts and (2) pumice from recent eruptions of Popocatépetl volcano. Our aim is to characterize the source mechanism distinguishing the physical processes that operate in the conduit which determine the dynamics of explosive volcanoes. For this aim we have analyzed experimentally the parameters that indicate the state and behavior of the conduit (i.e., decompression time, fragmentation threshold and speed, forces, and the partitioning of energy), using microseismic monitoring, the decompression time curves, and the sample rheological properties. The initial available potential energy in the system and its partitioning into different types of energies are correlated in space and time with specific stages of the explosive phenomenon. Such correlations, taken together with the energy distribution, enable the distinction of the individual physical processes involved and their causal sequence and relationships. Our observations suggest that in volcanic conduits with regular explosive activity, a source mechanism may operate whereby a causal sequence of processes results in a system that undergoes both rapid and stable transitions. Such behavior may persist over long periods of time.
Semiautomatic fracture zone tracking
Authors: Wessel Paul , Matthews Kara J. , Müller R. Dietmar , Mazzoni Aline , Whittaker Joanne M. , Myhill Robert , Chandler Michael T. 
Published: June 2015

AbstractOceanic fracture zone traces are widely used in studies of seafloor morphology and plate kinematics. Satellite altimetry missions have resulted in high‐resolution gravity maps in which all major fracture zones and other tectonic fabric can be identified, and numerous scientists have digitized such lineaments. We have initiated a community effort to maintain low‐cost infrastructure that allows seafloor fabric lineaments to be stored, accessed, and updated. A key improvement over past efforts is our processing software (released as a GMT5 supplement) that allows for semiautomatic corrections to previously digitized fracture zone traces given improved gridded data sets. Here we report on our seafloor fabric processing tools, which complement our database of seafloor fabric lineations, magnetic anomaly identifications, and plate kinematic models.
Experimental Study of the Extrusion Characteristic of a Vane Extruder Based on Extensional Flow
Authors: Xiaochun Yin , Sai Li , Guangjian He , Guizhen Zhang , Jinping Qu 
Published: June 2015

ABSTRACTExperiments were carried out to study the extrusion characteristics of a vane extruder based on extensional flow. The effects of rotor speed and die pressure on output were studied and compared with a single screw extruder. The responses of melt pressure to rotor speed and die pressure were also studied in real timescale. Experimental results show that the die pressure has little effect on output, which is significantly different from that of single screw extruders. Oscillation pressure was introduced into the extrusion process by the dynamic convergent–divergent flow channel of the vane extruder. The oscillation frequency of melt pressure is four times of that of the rotor angular frequency. The die pressure has a little influence on the oscillation amplitude of melt pressure. The oscillation amplitude of melt pressure increases with the increase of rotor speed. The oscillation amplitude of melt pressure decreases along the extrusion direction.
Elucidation of Pathways for NO Electroreduction on Pt(111) from First Principles
Authors: Clayborne Andre , Chun Hee‐Joon , Rankin Rees B. , Greeley Jeff 
Published: June 2015

AbstractThe mechanism of nitric oxide electroreduction on Pt(111) is investigated using a combination of first principles calculations and electrokinetic rate theories. Barriers for chemical cleavage of NO bonds on Pt(111) are found to be inaccessibly high at room temperature, implying that explicit electrochemical steps, along with the aqueous environment, play important roles in the experimentally observed formation of ammonia. Use of explicit water models, and associated determination of potential‐dependent barriers based on Bulter–Volmer kinetics, demonstrate that ammonia is produced through a series of water‐assisted protonation and bond dissociation steps at modest voltages (<0.3 V). In addition, the analysis sheds light on the poorly understood formation mechanism of nitrous oxide (N2O) at higher potentials, which suggests that N2O is not produced through a Langmuir–Hinshelwood mechanism; rather, its formation is facilitated through an Eley–Rideal‐type process.
Encapsulation of Halocarbons in a Tetrahedral Anion Cage
Authors: Yang Dong , Zhao Jie , Zhao Yanxia , Lei Yibo , Cao Liping , Yang Xiao‐Juan , Davi Martin , de Sousa Amadeu Nader , Janiak Christoph , Zhang Zhibin , Wang Yao‐Yu , Wu Biao 
Published: June 2015

AbstractCaged supramolecular systems are promising hosts for guest inclusion, separation, and stabilization. Well‐studied examples are mainly metal‐coordination‐based or covalent architectures. An anion‐coordination‐based cage that is capable of encapsulating halocarbon guests is reported for the first time. This A4L4‐type (A=anion) tetrahedral cage, [(PO4)4L4]12−, assembled from a C3‐symmetric tris(bisurea) ligand (L) and phosphate ion (PO43−), readily accommodates a series of quasi‐tetrahedral halocarbons, such as the Freon components CFCl3, CF2Cl2, CHFCl2, and C(CH3)F3, and chlorocarbons CH2Cl2, CHCl3, CCl4, C(CH3)Cl3, C(CH3)2Cl2, and C(CH3)3Cl. The guest encapsulation in the solid state is confirmed by crystal structures, while the host–guest interactions in solution were demonstrated by NMR techniques.
Ibrutinib and rituximab induced rapid response in refractory Richter syndrome
Authors: Lamar Zanetta , Kennedy LeAnne , Kennedy Brooke , Lynch Mary , Goad Amanda , Hurd David , McIver Zachariah 
Published: June 2015

Key Clinical MessageWe report a 53‐year‐old man diagnosed with Richter syndrome. He was heavily pretreated and was refractory to prior therapy. He received rituximab and ibrutinib, and achieved a significant response after 1 month of therapy. Our case illustrates the importance of investigation of rituximab and ibrutinib in Richter's syndrome.
ChemInform Abstract: Crystal Structure of Bis(fluorosulfato‐ϰO)xenon(II), Xe(SO3F)2.
Authors: Malischewski Moritz , Seppelt Konrad 
Published: June 2015

AbstractThermally unstable Xe(SO3F)2 is prepared by reaction of XeF2 with HSO3F (sealed PFA tube, 273 K) and single crystals are obtained from HSO3F by slow cooling in the sealed tube to 193 K.
ChemInform Abstract: Structural Origin of the Anisotropic and Isotropic Thermal Expansion of K2NiF4‐Type LaSrAlO4 and Sr2TiO4.
Authors: Yashima Masatomo , et al.  
Published: June 2015

AbstractThe anisotropic and isotropic thermal expansion of LaSrAlO4 and Sr2TiO4, resp.
ChemInform Abstract: Facile Construction of Graphene‐Like Ni3S2 nanosheets Through the Hydrothermally Assisted Sulfurization of Nickel Foam and Their Application as Self‐Supported Electrodes for Supercapacitors.
Authors: Zhuo Ming , Zhang Ping , Chen Yuejiao , Li Qiuhong 
Published: June 2015

AbstractGraphene‐like large‐area Ni3S2 nanosheets are obtained via hydrothermally assisted sulfurization of nickel foam in an aqueous solution of MeCSNH2 (autoclave, 120 °C, 4 h).
ChemInform Abstract: Sr2MgOsO6: A Frustrated Os6+(5d2) Double Perovskite with Strong Antiferromagnetic Interactions.
Authors: Sarapulova Angelina , Adler Peter , Schnelle Walter , Mikhailova Daria , Felser Claudia , Tjeng Liu Hao , Jansen Martin 
Published: June 2015

AbstractThe Os6+ (t2g2) double perovskite Sr2MgOsO6 is prepared by solid state reaction of stoichiometric amounts of SrO2, OsO2, and MgO under intermittent regrinding and final oxidation (1.
ChemInform Abstract: Electronic Pseudogap‐Driven Formation of New Double‐Perovskite‐Like Borides within the Sc2Ir6—xTxB (T: Pd, Ni; x: 0—6) Series.
Authors: Hermus Martin , Scheifers Jan P. , Touzani Rachid , Fokwa Boniface P. T. 
Published: June 2015

AbstractDFT calculations for the ternary phases Sc2M6B (M: Ir, Pd, Ni) reveal the presence of pseudogaps near their Fermi levels between 61 and 68 valence electrons leading to the prediction of new phases Sc2Ir6‐xPdxB and Sc2Ir6‐xNixB (x = 0—6) in the double‐perovskite‐like Ti2Rh6B‐type structure.
ChemInform Abstract: Facile, Diversity‐Oriented, Normal‐Electron‐Demand Diels—Alder Reactions of 6‐Amino‐2H‐pyran‐2‐ones with Diethyl Acetylene‐dicarboxylate, 1,4‐Naphthoquinone, and N‐Phenylmaleimide.
Authors: Khatri Adil I. , Samant Shriniwas D. 
Published: June 2015

AbstractThe Diels—Alder reactions of the title dienophiles with pyranones (I) follow three different pathways to produce benzene, anthraquinone, and polycyclic diimide derivatives.
ChemInform Abstract: Enantioselective Construction of Tetrasubstituted Stereogenic Carbons Through Broensted Base Catalyzed Michael Reactions: α′‐Hydroxy Enones as Key Enoate Equivalent.
Authors: Palomo Claudio , et al.  
Published: June 2015

Abstractα‐Hydroxy enones undergo asymmetric Michael reactions with a broad variety of Michael donors catalyzed by varying chiral catalysts.
ChemInform Abstract: Asymmetric Dual‐Reagent Catalysis: Mannich‐Type Reactions Catalyzed by Ion Pair.
Authors: Wang Hong‐Yu , Zhang Kai , Zheng Chang‐Wu , Chai Zhuo , Cao Dong‐Dong , Zhang Jia‐Xing , Zhao Gang 
Published: June 2015

AbstractThis method uses new bifunctional phosphines and methyl acrylate which in situ generate zwitterions serving as catalysts for asymmetric Mannich‐type and aza‐Henry reactions through a homogeneous ion‐pairing mode.
ChemInform Abstract: Diastereoselective Nitroaldol Reaction Catalyzed by Binuclear Copper(II) Complexes in Aqueous Medium.
Authors: Arunachalam Rajendran , Aswathi Chirayil S. , Das Anjan , Kureshy Rukhsana I. , Subramanian Palani S. 
Published: June 2015

AbstractTwo polydentate ligands are incorporated to produce the Cu‐complexes (I) and (II).
ChemInform Abstract: C—H Activation Dependent Pd‐Catalyzed Carbonylative Coupling of (Hetero)aryl Bromides and Polyfluoroarenes.
Authors: Lian Zhong , Friis Stig D. , Skrydstrup Troels 
Published: June 2015

AbstractThis method uses a two chamber system allowing the reaction to run with near stoichiometric amounts of freshly generated CO.
ChemInform Abstract: Two‐Step Cyanomethylation Protocol: Convenient Access to Functionalized Aryl‐ and Heteroarylacetonitriles.
Authors: Lindsay‐Scott Peter J. , Clarke Aimee , Richardson Jeffery 
Published: June 2015

AbstractA protocol for the coupling of potassium aryltrifluoroborate salts or heteroarylstannanes with a bromoisoxazole derivative is developed, and the products are deprotected under conventional or microwave‐assisted heating to form various aryl or hetarylacetonitriles, respectively.
ChemInform Abstract: Gold‐Catalyzed Hydroarylating Cyclization of 1,2‐Bis(2‐iodoethynyl)benzenes.
Authors: Noesel Pascal , Mueller Vanessa , Mader Steffen , Moghimi Setareh , Rudolph Matthias , Braun Ingo , Rominger Frank , Hashmi A. Stephen K. 
Published: June 2015

AbstractThe title reaction with benzene or electron rich arenes as reacting solvent produces aryl‐diiodonaphthalenes in good yields.
ChemInform Abstract: Tetracyclopenta[def,jkl,pqr,vwx]tetraphenylene: A Potential Tetraradicaloid Hydrocarbon.
Authors: Nobusue Shunpei , Miyoshi Hirokazu , Shimizu Akihiro , Hisaki Ichiro , Fukuda Kotaro , Nakano Masayoshi , Tobe Yoshito 
Published: June 2015

AbstractCompound (I), a derivative of the hitherto unknown title compound which is a potential tetraradicaloid hydrocarbon, is synthesized in five steps starting from a known polycyclic tetracarboxylic acid (synthetic pathway not shown).
ChemInform Abstract: Enantioselective Assembly of Functionalized Carbocyclic Spirooxindoles Using an L‐Proline Derived Thiourea Organocatalyst.
Authors: Reddy Gajulapalli V. Pratap , Vinayagam Poopathy , Kesavan Venkitasamy 
Published: June 2015

AbstractMultifunctional spirooxindole scaffolds are synthesized by enantioselective multi‐component reactions involving sequential vinylogous Michael addition and cyclization.
ChemInform Abstract: Type II Intramolecular [5 + 2] Cycloaddition: Facile Synthesis of Highly Functionalized Bridged Ring Systems.
Authors: Mei Guangjian , Liu Xin , Qiao Chuang , Chen Wei , Li Chuang‐chuang 
Published: June 2015

AbstractThe first type II intramolecular [5 + 2] cycloaddition reaction involving an oxopyrylium ylide and a simple alkene provides a range of bridged cycloheptenone derivatives.
ChemInform Abstract: Coupling of Carboxylic Acids with Internal Alkynes by Supported Ruthenium Catalysts: Direct and Selective Syntheses of Multi‐Substituted Phthalide Derivatives.
Authors: Miura Hiroki , Tsutsui Kentaro , Wada Kenji , Shishido Tetsuya 
Published: June 2015

AbstractThe applied catalyst can be recycled at least five times with no loss of activity.
ChemInform Abstract: Multicomponent One‐Pot Synthesis of Highly‐Functionalized Pyrrole‐3‐carbonitriles in Aqueous Medium and Their Computational Study.
Authors: Pagadala Ramakanth , Kommidi Devendar Reddy , Kankala Shravankumar , Maddila Suresh , Singh Parvesh , Moodley Brenda , Koorbanally N. A. , Jonnalagadda Sreekantha B. 
Published: June 2015

AbstractA simple four‐component reaction of aldehydes, malononitrile, isocyanates and cyclic secondary amines yields fully substituted pyrroles by mild heating in water.
ChemInform Abstract: Oxidative Alkenylation/Annulation of Benzimidates via Ruthenium(II)‐Catalyzed C—H Activation to Generate 3‐Methyleneisoindolin‐1‐ones.
Authors: Li Xing Guang , Sun Min , Liu Kai , Liu Pei Nian 
Published: June 2015

AbstractThe N—H imidate group efficiently acts as a directing group in Ru‐catalyzed C—H activation allowing the regio‐ and stereoselective synthesis of methyleneisoindolinones.
ChemInform Abstract: 1,6‐Addition Reaction of 5H‐Oxazol‐4‐ones to Conjugated Dienones Catalyzed by Chiral Guanidines.
Authors: Morita Akane , Misaki Tomonori , Sugimura Takashi 
Published: June 2015

AbstractThe 1,6‐addition of 5H‐oxazolones to conjugated dienones catalyzed by chiral guanidines to yield oxazol derivatives is described.
ChemInform Abstract: 2‐Pyrrolecarbaldiminato—Cu(II) Complex Catalyzed Three‐Component 1,3‐Dipolar Cycloaddition for 1,4‐Disubstituted 1,2,3‐Triazoles Synthesis in Water at Room Temperature.
Authors: Zhou Changjian , Zhang Jie , Liu Ping , Xie Jianwei , Dai Bin 
Published: June 2015

Abstract2‐Pyrrolecarbaldiminato—Cu(II) complexes are highly efficient catalysts for the one‐pot three‐component cycloaddition of various benzyl halides with alkyl/aryl acetylenes/acetylene gas, and NaN3 leading to 1,4‐disubstituted 1,2,3‐triazoles with high regioselectivity.
ChemInform Abstract: Stereoselective Synthesis and Physicochemical Properties of Liquid‐Crystal Compounds Possessing a trans‐2,5‐Disubstituted Tetrahydropyran Ring with Negative Dielectric Anisotropy.
Authors: Araki Keisuke , Yamamoto Tetsuya , Tanaka Ryoji , Tanaka Saori , Ushioda Makoto , Gotoh Yasuyuki , Yamakawa Tetsu , Inoue Munenori 
Published: June 2015

AbstractThree alternative stereoselective syntheses of an important liquid‐crystal compound bearing a trans‐2,5‐disubstituted tetrahydropyran ring (VI) are described.
ChemInform Abstract: Copper Catalyzed Room Temperature Lactonization of Aromatic C—H Bond: A Novel and Efficient Approach for the Synthesis of Dibenzopyranones.
Authors: Singha Raju , Dhara Shubhendu , Ghosh Munmun , Ray Jayanta K. 
Published: June 2015

AbstractThe title compounds are efficiently obtained by intramolecular aryl C—H oxidative lactonization of 2‐arylbenzaldehydes using tBuOOH as oxidant and CuCl as low‐cost catalyst.
ChemInform Abstract: Exploring the Scope of the Isothiourea‐Mediated Synthesis of Dihydropyridinones.
Authors: Yeh Pei‐Pei , Daniels David S. B. , Fallan Charlene , Gould Eoin , Simal Carmen , Taylor James E. , Slawin Alexandra M. Z. , Smith Andrew D. 
Published: June 2015

AbstractTetramisole‐mediated reaction of 2‐substituted acetic acids (I) and (IV) and α,β‐unsaturated ketimines (II) gives the title compounds in good to high yields and with excellent stereoselectivities.
ChemInform Abstract: Phosphine‐Catalyzed Dearomatizing [3 + 2] Annulations of Isoquinolinium Methylides with Allenes.
Authors: Jia Zhi‐Jun , Daniliuc Constantin Gabriel , Antonchick Andrey P. , Waldmann Herbert 
Published: June 2015

AbstractThe title reaction furnishes highly functionalized pyrroloisoquinolines with high regioselectivity and in moderate to good yields.
ChemInform Abstract: Copper‐ and Ligand‐Free Heteroannulation of o‐Halohydroxypyridine with Terminal Alkynes Using Pd/C Catalyst: One‐Pot Synthesis of 2‐Substituted Furopyridines and Their Functionalization.
Authors: Park Hee Jung , Kim Ji‐Eun , Yum Eul Kgun , Kim Young Hoon , Han Chang‐Woo 
Published: June 2015

AbstractThe double functionalization can be achieved through heteroannulation followed by bromination and Suzuki/Heck reactions (X), (XII).
ChemInform Abstract: Synthesis of Bridged Benzazocines and Benzoxocines by a Titanium‐Catalyzed Double‐Reductive Umpolung Strategy.
Authors: Bichovski Plamen , Haas Thomas M. , Kratzert Daniel , Streuff Jan 
Published: June 2015

AbstractA sequence of two Ti(III)‐catalyzed reductive umpolung reactions is reported that allows the rapid construction of benzazo‐ and benzoxozine derivatives.
ChemInform Abstract: 7‐endo Cyclization of 2,3‐Epoxyamides and 2,3‐Aziridine Carboxamides by Intramolecular Friedel—Crafts Reaction.
Authors: Palillero‐Cisneros Angel , Gordillo‐Guerra Paola G. , Aparicio‐Solano David M. , Gnecco Dino , Mendoza Angel , Juarez Jorge R. , Teran Joel L. 
Published: June 2015

AbstractThe title reaction gives the products in high yield and in a regio‐ and stereoselective manner.
ChemInform Abstract: Mn(OAc)3‐Mediated Phosphonation—Lactonization of Alkenoic Acids: Synthesis of Phosphono‐γ‐butyrolactones.
Authors: Gao Yuzhen , Li Xueqin , Xu Jian , Wu Yile , Chen Weizhu , Tang Guo , Zhao Yufen 
Published: June 2015

AbstractThe reaction proceeds through Mn(OAc)3‐mediated radical oxidative phosphonation and lactonization of alkenoic acids with H‐phosphonates and H‐phosphine oxide.
ChemInform Abstract: Synthesis and Characterization of Ytterbium Guanidinates Stabilized by Bridged Bis(phenolate) Ligand and Their Application for the Hydrophosphonylation Reaction of Aldehydes.
Authors: Zeng Tinghua , Qian Qinqin , Wang Yaorong , Yao Yingming , Shen Qi 
Published: June 2015

AbstractYtterbium guanidinates are shown to be highly efficient catalysts for the hydrophosphonylation of various aldehydes (16 examples) under mild conditions.
ChemInform Abstract: Dysifragilones A—C, Unusual Sesquiterpene Aminoquinones and Inhibitors of NO Production from the South China Sea Sponge Dysidea fragilis.
Authors: Li Yu‐Shan , et al.  
Published: June 2015

AbstractThree unusual sesquiterpene aminoquinones based on a rearranged avarone skeleton, dysifragilones A (Ia), B (Ib), and C (II), are isolated from the marine sponge Dysidea fragilis.