bluuebunny/crossref_metadata_2025_split huggingface dataset:
Self-aggregates of Hydrophobized Polysaccharide as a Host for Macromolecular Guests
Authors: Akiyoshi Kazunari , Nagai Kenichi , Nishikawa Takehiro , Sunamoto Junzo 
Published: May 2006

Abstract
Nano-particles, which are self-aggregates of hydrophobized pullulan partly substituted cholesterol moieties (CHP), formed a complex with various globular and soluble proteins such as hemoglobin, peroxidase, myoglobin, and cytochrome c. The nano-particle also showed an excellent colloidal stability and almost no dissociation of the protein from the complex.
Molecular Recognition Using Cyanine-α-Helical Poly(L-Lysine) Complexes in Methanol
Authors: Ihara Hirotaka , Shibata Masaaki , Hirayama Chuichi 
Published: May 2006

Abstract
Cyanine dyes bound to α-helical poly(L-lysine·HBr) (PLL·HBr) in methanol provide extremely strong exciton couplings in CD spectra caused by their R-chiral dimer formation and that dyes-PLL complexes show varying degrees of remarkable strength change in the CD recognizing on their methylene numbers upon addition of α,ω-diaminoalkanes.
Antioxidant Activities of α-Tocopherol and Hydroxycarbazole against Lipid Peroxidation in Homogeneous Solution and in Liposomal Membranes
Authors: Iwatsuki Misato , Niki Etsuo , Kato Shinichiro , Nishikori Koji 
Published: May 2006

Abstract
α-Tocopherol and carazostatin (1-heptyl-3-hydroxy-2-methyl-carbazole) acted as a potent antioxidant against lipid peroxidation. α-Tocopherol was more active than carazostatin in homogeneous solution, whereas, in the liposomal membranes, carazostatin exhibited a stronger antioxidant activity than α-tocopherol. This novel finding on such a reversal in relative antioxidant activity by the change in reaction media suggests the importance of mobility of an antioxidant at microenvironment in determining antioxidant activity.
Regioselective Thermal Cyclization of N-Aryl-4-chloro-1-aza-1,3-butadiene Derivatives. A Short and Efficient Synthesis of Dibenz[c,h]acridines
Authors: Kar Gandhi Kumar , Sami Izhar , Ray Jayanta Kumar 
Published: May 2006

Abstract
Dibenz[c,h]acridines have been synthesised in good yields by thermal cyclization (140–180 °C) of N-aryl-4-chloro-1-aza-1,3-butadiene derivatives followed by dehydrogenation.
Crystal Engineering and Substituent Effect of Hindered Phenols for SHG Materials
Authors: Takagi Koichi , Mizuno Akira , Kubata Michiru , Mizoguchi Akira , Furushow Masaru , Matsuoka Masaru 
Published: May 2006

Abstract
2,6-Di-tert-butylphenol moiety was found to be effective to control molecular packing in crystals for SHG materials. Many derivatives having compact acceptor group at 4-position of hindered phenols showed SHG responses depending on the electron withdrawing effect of an acceptor. The X-ray structural analyses revealed that molecular packing was controlled both by the steric requirements and the intermolecular hydrogen bonding.
A New and Efficient Method for the Preparation of S-Phenyl Carbothioates via Mixed Anhydrides Using Active Titanium(IV) Salts
Authors: Mukaiyama Teruaki , Miyashita Mitsutomo , Shiina Isamu 
Published: May 2006

Abstract
In the presence of a catalytic amount of titanium(IV) salt, various S-phenyl carbothioates are prepared in excellent yields by the reaction of nearly equimolar amounts of silyl derivatives of carboxylic acids and benzenethiols with p-trifluoromethylbenzoic anhydride.
An Efficient Catalytic Friedel-Crafts Acylation Reaction of Equimolar Amounts of Aromatic Compounds and Free Carboxylic Acids or Their Trimethylsilylesters via Mixed Anhydrides
Authors: Mukaiyama Teruaki , Suzuki Kaoru 
Published: May 2006

Abstract
In the presence of an active catalyst generated from SiCl4 and AgClO4, the Friedel-Crafts acylation reaction between equimolar amounts of aromatic compounds and mixed anhydrides, formed in situ from free carboxylic acids (or their trimethylsilylesters) and p-trifluoromethylbenzoic anhydride, smoothly proceeds at room temperature to afford the corresponding aromatic ketones in high yields.
Stereoselective Synthesis of 2-Amino-2-deoxy-β-D-glucopyranosides and Galactopyranosides by Using a Catalytic Amount of Tin(II) Trifluoromethanesulfonate
Authors: Mukaiyama Teruaki , Matsubara Koki 
Published: May 2006

Abstract
In the presence of a catalytic amount of tin(II) trifluoromethanesulfonate, various 2-amino-2-deoxy-β-D-glucopyranosides or galactopyranosides are stereoselectively synthesized in good yields from 1,3,4,6-tetra-O-acetyl-2-deoxy-2-(2,2,2-trichloroethoxy carbonylamino)-β-D-glucopyranose or galactopyranose and alkyl trimethylsilyl ethers, respectively.
Approaches toward High-Spin Poly[m-(nitrenophenylene)ethynylenes]. Magnetic Interaction in the Oligomers Containing Two, Three, and Five Nitrene Units
Authors: Sasaki Shigeru , Iwamura Hiizu 
Published: May 2006

Abstract
Oligonitrenes representing the various unit structures in poly[m-(nitrenophenylene)ethynylenes] (1) were prepared and studied by means of EPR and magnetization measurements which support our hypothesis that 1 will have a superhigh-spin ground state.
Photoregulation of Tilt Angle of Nematic Liquid Crystals by Azobenzene Layers
Authors: Sakuragi Masako , Tamaki Takashi , Seki Takahiro , Suzuki Yasuzo , Kawanishi Yuji , Ichimura Kunihiro 
Published: May 2006

Abstract
Hybrid-type liquid crystal cells were prepared with glass plates modified with octadecyltrichlorosilane and Langmuir-Blodgett film of azobenzene polymer. The tilt angle of director of the nematic liquid crystals is continuously varied by regulating the fraction of trans-azobenzene units by irradiating light wavelength.
Preferential Exhibition of Smectic A Phase through Intramolecular Hydrogen Bonding in 2-Amino-5-phenyltropone Liquid Crystals
Authors: Mori Akira , Katahira Kouki , Kida Katsuhiko , Takeshita Hitoshi 
Published: May 2006

Abstract
Two new types of liquid crystals, 5-(4-alkanoylaminophenyl)-2-alkanoylaminotropones and 5-(4-alkanoylaminophenyl)-2-alkanoyloxytropones, were prepared. The former showed the smectic A phase and the latter did the smectic A and C phases. The 1H NMR spectra indicated the former to be in intramolecularly hydrogen-bonded L-shaped alignment.
Through-Bond Interaction in the Trifluoroethanolysis of 4-Oxo-2eq-adamantyl Triflate and Its Essential Vanishing in the Corresponding 2-Phenyl Substituted Trifluoroacetate
Authors: Yoshida Masayasu , Mitsuhashi Koichi , Kimura Tsutomu , Takeuchi Ken’ichi , Fukuyo Emiko , Yanagi Kazunori 
Published: May 2006

Abstract
Attachment of an oxo substituent on the 4-position of 2-adamantyl triflate alters the rate of trifluoroethanolysis at 25 °C by respective factors of 10−1.1 and 10−2.5 for 2eq- and 2ax-triflates, and 10−2.9 and 10−2.5 for the corresponding 2-phenyl-2eq- and -2ax-adamantyl trifluoroacetates, indicating the presence of through-bond interaction in the secondary equatorial and its essential vanishing in the 2-phenyl system. Product distributions agree with this notion.
Dependence of the Lewis Acid-induced Reaction of β-Stannyl Ketones upon Substitution Pattern. 1,2-Alkyl Migration versus Cyclopropanation
Authors: Fujiwara Jun , Yamamoto Taro , Sato Tadashi 
Published: May 2006

Abstract
3-Stannylcyclohexanones fully substituted at 2 and 3 positions undergo a 1,2-alkyl migration and cyclopropanation. The balance of the reaction pattern depends upon the steric environment and migratory aptitude of the alkyl groups.
Heterocyclic Betaines. Imidazolium Benzimidazolate Inner Salts with a Vinylene and Oxoethylene Interannular Linkages
Authors: Alcalde Ermitas , Pérez-Garcia Lluïsa , Pons Josep M , Roca Tomás 
Published: May 2006

Abstract
A novel ensemble of heterocyclic betaines is reported. The title compounds were synthesized by two methodologies according to the nature of the interannular linkage. Their highly dipolar structure is well shown by their physicochemical properties.
NMR Study on Compositional Inhomogeneity in Electroless-Deposited CoNiP Films for Perpendicular Magnetic Recording
Authors: Homma Takayuki , Asai Hiroki , Osaka Tetsuya , Takei Koji , Maeda Yasushi 
Published: May 2006

Abstract
Compositional inhomogeneity in electroless-deposited CoNiP films with perpendicular magnetic anisotropy was examined using the spin echo 59Co-NMR technique for the first time. The existence of a Co-rich component was observed which was thought to cause the formation of an hcp structure and produce high perpendicular coercivity, Hc(⊥). An increment in the Co-rich component by heat-treatment was also observed which might be an origin of the increase in Hc(⊥).
Electroactivity Change of Electropolymerized Polypyrrole/Polystyrenesulfonate Composite Film in Some Organic Electrolytes
Authors: Osaka Tetsuya , Momma Toshiyuki , Nishimura Ken 
Published: May 2006

Abstract
Electroactivity of polypyrrole/polystyrenesulfonate composite film obtained from an aqueous solution was examined in various organic electrolytes. The composite film worked like electroinactive film in electrolyte using propylene carbonate or some solvents except in the case of DMF or DMSO electrolytes, however, the film changed from electroinactive to electroactive even in propylene carbonate and some organic electrolytes after an electrochemical potential application to the film while in DMF or DMSO electrolytes.
Glucose Sensitivity of Poly(mercapto-p-benzoquinone) Films Containing Immobilized Glucose Oxidase
Authors: Arai Gorou , Masuda Miwako , Yasumori Iwao 
Published: May 2006

Abstract
Glucose oxidase was immobilized in poly(mercapto-p-benzoquinone) film by an electropolymerization of mercaptohydroquinone in the presence of the enzyme. The resulting polymer-coated electrode functioned well as a glucose sensor in an N2 atmosphere. The sensor showed excellent selectivity for glucose and was possessed of good durability.
Preparation and Structural Characterization of Cationic Dinuclear Ruthenium(II) — Thiolate Complexes, [Ru2(SPh)3(η6-p-cymene)2]Y (Y = Cl and PF6)
Authors: Mashima Kazushi , Mikami Aki , Nakamura Akira 
Published: May 2006

Abstract
Treatment of [RuCl2(p-cymene)]2 with sodium benzenethiolate in methanol afforded a cationic dinuclear ruthenium thiolate complexes, [Ru2(SPh)3(p-cymene)2]Y (2a: Y = Cl; 2b: Y = PF6), whose structure is determined by X-ray analysis of 2b.
Copper-Ion Responsive Chemical Bimetal
Authors: Yamada Takeshi 
Published: May 2006

Abstract
A new type of sensor, called “Chemical Bimetal”, has been developed. Chemical Bimetal uses the “Bimetal effect” and can effectively amplify the expansion or the contraction of materials. The copper-ion responsive Chemical Bimetal was constructed from polyethylene terephthalate (PET) membrane and polyvinyl chloride (PVC) membrane which contains 7-(1-ethenyl-3,3,5,5-tetramethylhexyl)-8-quinolinol (Kelex 100) as a reactant. This Chemical Bimetal responds to copper ion concentration from 0.2 to 1 mM.
Unusual Diastereofacial Selectivity in the Michael Addition Reactions of Lithiated 2-Aminoacetates and -acetamides to α,β-Unsaturated Carbonyl Compounds
Authors: Kanemasa Shuji , Nomura Masafumi , Taguchi Yasuhisa 
Published: May 2006

Abstract
Unusual diastereofacial selectivities are observed in the Michael addition reactions of lithiated aminoacetates and -acetamides to α,β-unsaturated carbonyl acceptors. Lithiated (methylamino)acetates and -acetamides show opposite anti- and syn-selectivities, respectively, while lithiated (dialkylamino)acetates and -acetamides are both highly syn-selective.
A Hybrid of Amphiphilic α-Helical Peptides and meso-Tetra(α,α,α,α-o-carboxyphenyl)porphyrin. Membrane-Penetrating Porphyrin-4α-Helix Artificial Protein
Authors: Mihara Hisakazu , Nishino Norikazu , Hasegawa Ryuji , Fujimoto Tsutomu 
Published: May 2006

Abstract
Four amphiphilic α-helical peptides were hybridized with α,α,α,α-isomer of meso-tetra(o-carboxyphenyl)porphyrin to synthesize a picket-fence-type 4α-helix bundle polypeptide. The peptide sequence was designed so that the hybrid polypeptide could penetrate into phospholipid bilayers. Circular dichroism spectra showed that the hybrid folds in a complete four α-helix bundle structure both in methanol and dipalmitoylphosphatidylcholine vesicles.
Probing Behavior of 1-Pyrenylalanine for Interaction of Two α-Helices Anchored on a Bipyridyl Group
Authors: Mihara Hisakazu , Nishino Norikazu , Fujimoto Tsutomu 
Published: May 2006

Abstract
Two strands of an amphiphilic α-helical 14-peptide were anchored in parallel on a bipyridyl group to construct a helix-helix structure. The interaction of two α-helices in various circumstances was probed by behavior of 1-pyrenylalanine residues in circular dichroism and fluorescence spectra.
Design of a Hybrid of Two α-Helix Peptides and Ruthenium Trisbipyridine Complex for Photo-induced Electron Transfer System in Bilayer Membrane
Authors: Mihara Hisakazu , Nishino Norikazu , Hasegawa Ryuji , Fujimoto Tsutomu , Usui Satoshi , Ishida Hitoshi , Ohkubo Katsutoshi 
Published: May 2006

Abstract
Two strands of an amphiphilic α-helical 22-peptide were anchored on ruthenium trisbipyridine complex. The hybrid was equipped with the triad of the ruthenium complex, anthraquinone, and viologen as photo-induced electron transfer system embedded in bilayer membrane.
Remarkable Effect of D-Sorbitol on the Second Stage in the PLE-Catalyzed Hydrolyses of a σ-Symmetric Diester, cis-Cyclohex-4-ene-1,2-bis(methyl acetate)
Authors: Nagao Yoshimitsu , Tohjo Toshiaki , Kaneuchi Tohru , Yukimoto Yusuke , Kume Masaharu 
Published: May 2006

Abstract
Enantioselective hydrolysis of cis-cyclohex-4-ene-1,2-bis(methyl acetate) with porcine liver esterase (PLE) in the presence of D-sorbitol afforded a chiral monoester in a highly enantioselective manner. During the enzymatic hydrolyses, D-sorbitol efficiently accelerate the second stage; hydrolysis of the resultant minor monoester toward the dicarboxylic acid leaving the desired major monoester.
A Simple Synthesis of Pure 2-Aminotroponimine, the Nitrogen Analogue of Tropolone
Authors: Machiguchi Takahisa , Takeno Tetsumi , Hasegawa Toshio , Kimura Yoshiyasu 
Published: May 2006

Abstract
2-Aminotroponimine (1) is conveniently synthesized in high yield and is isolated in pure form, starting from 2-aminotropone via 2-methoxytroponiminium fluorosulfonate. N,N′-Dimethyl derivative of 1 is prepared similarly.
Novel Bis(triphenylphosphine)platinum(II) Complexes Containing a Thiourea or a 1,3-Diethylthiourea Dianion as an N,S-Chelating Ligand
Authors: Okeya Seichi , Fujiwara Yasuko , Kawashima Setsuko , Hayashi Yoshihito , Isobe Kiyoshi , Nakamura Yukio , Shimomura Hiroshi , Kushi Yoshihiko 
Published: May 2006

Abstract
Three kinds of platinum(II) complexes, [Pt{S=C(NHEt)2}2h(PPh3)2](hfac)2, (2; R = Et or H, X = hfac) and (R = Et (3a) or H), containing thiourea derivatives as neutral, monoanionic, and dianionic ligands, respectively, have been prepared. Thioureido(1−) complex 2 (R = Et, X = OTs) was also prepared by protonation of 3a with TsOH·H2O. The structure of 3a with an N,S-chelating thioureido(2−) ligand was determined by single-crystal X-Ray diffraction.
Strong Dichroism of π-Conjugated Poly(2,2′-bipyridine-5,5′-diyl) and Poly(pyridine-5,2-diylthiophene-2,5-diyl) in Stretched Poly(vinyl alcohol) Film
Authors: Maruyama Tsukasa , Kubota Kenji , Yamamoto Takakazu 
Published: May 2006

Abstract
Stretching of poly(vinyl alcohol) PVA film containing poly(2,2′-bipyridine-5,5′-diyl) PBPy or poly(pyridine-5,2-diyl-thiophene-2,5-diyl)PTPy in the surface region of PVA leads to alignment of the π-conjugated polymers along the stretching direction. The stretched PVA-PBPy and PVA-PTPy aduct films showed a strong dichroism and polarizing effect at 350 nm and 450 nm, respectively.
Preparation and Isolation of an Exceptionally Persistent Nitrogen-centered Free Radical. N-[(4-Nitrophenyl)thio]-2.7-di-t-butyl-1-pyrenylaminyl
Authors: Miura Yozo , Yamano Eiji , Tanaka Akio , Ogo Yoshiaki 
Published: May 2006

Abstract
Oxidation of N-[(4-nitrophenyl)thio]-2,7-di-t-butyl-1-aminopyrene yields an exceptionally persistent and oxygen-insensitive N-[(4-nitrophenyl)thio]-2,7-di-t-butyl-1-pyrenylaminyl, which has been isolated as pure radical crystals in 31% yield. The crystals can be stored, without decomposition, for a long period.
A Controlled Synthesis of 9α-Methyl- and 9α-Cyanoisocarbacyclins
Authors: Hashimoto Shun-ichi , Suzuki Atsushi , Shinoda Tomohiro , Miyazaki Yoji , Ikegami Shiro 
Published: May 2006

Abstract
A controlled synthesis of 9α-methyl- and 9α-cyanoisocarbacyclins from the keto-diol, a key intermediate in the convergent synthesis of isocarbacyclin, has been accomplished by exploiting the sequence of a one-pot construction of the regio-defined enol triflate via 1,4-hydrosilylation of the enone and Pd(0)-catalyzed cross-coupling.
Cooperative Binding of Adenine via Complementary Hydrogen Bonding to an Imide Functionalized Monolayer at the Air-Water Interface
Authors: Kawahara Takaharu , Kurihara Kazue , Kunitake Toyoki 
Published: May 2006

Abstract
Double-chain derivatives of orotic acid (1) and hydroorotic acid (2) formed stable monolayers at the air-water interface. FT-IR and ESCA spectroscopies revealed specific cooperative binding of adenine from the aqueous subphase to monolayer 1 in preference to thymine. Monolayer 2 did not bind these nucleic acid bases.
An Efficient Synthesis of Selenocarbonyl Compounds by the Treatment of Carbonyl Compounds with Bis[1,5-cyclooctanediylboryl] Selenide
Authors: Shimada Kazuaki , Jin Norikazu , Fujimura Manabu , Nagano Yumi , Kudoh Eiichi , Takikawa Yuji 
Published: May 2006

Abstract
An efficient synthesis of selenoaldehydes, selenoketones, and selenoamides was achieved by the treatment of carbonyl compounds with bis[1,5-cyclooctanediylboryl] selenide.
Difference between Chlorophylls a and a′ in the Intermolecular Association Behavior. Visible Absorption and Circular Dichroism Spectral Features in Aqueous Methanol
Authors: Watanabe Tadashi , Kobayashi Masami , Hongu Akinori , Oba Toru 
Published: May 2006

Abstract
Visible absorption and circular dichroism (CD) spectroscopies on a series of chlorophyll (Chl) a/a′ epimeric mixtures in aqueous methanol have unraveled a striking influence of the stereochemistry at carbon 132 on the mode of intermolecular association of these pigments.
Synthesis of Asperuloside Aglucon Silyl Ether and Garjasmine from (+)-Genipin via Gardenoside Aglucon Disilyl Ether as a Common Intermediate
Authors: Nakatani Kazuhiko , Hiraishi Atsushi , Han Qingjun , Isoe Sachihiko 
Published: May 2006

Abstract
Synthesis of asperuloside aglucon silyl ether (4) and garjasmine from (+)-genipin was accomplished by utilizing the gardenoside aglucon disilyl ether (3) as a common intermediate. During the transformation of 3 into 4 the acid catalyzed transposition reaction of hydroxy group was found to proceed from more hindered concave side.
Mechanical and Optical Anisotropies of Nematic and Cholesteric Hydrogels of Poly(L-glutamic acid)
Authors: Matsuoka Yoshiki , Kishi Ryoichi , Sisido Masahiko 
Published: May 2006

Abstract
Cross-linked gels of poly(L-glutamic acid) (PGA) possessing cholesteric or nematic liquid-crystalline (LC) order were prepared from the corresponding LC gels of poly(γ-benzyl L-glutamate). Optical anisotropy measured by transmitted light intensity through cholesteric LC hydrogels between crossed polarizers showed reversible changes with the alternation of pH values. Mechanical anisotropy was also found in the nematic LC hydrogels.
Anaerobic Biodegradability of Water-Soluble High Molecular Weight Polycarboxylate by River Sediments
Authors: Matsumura Shuichi , Shimokobe Hisaki 
Published: May 2006

Abstract
High molecular weight poly(sodium carboxylate)s designed as biodegradable functional polymers were confirmed to be biodegraded under anaerobic conditions using river sediment. They were biodegraded to an extent similar to that under aerobic conditions.
Scillasaponins A, B, and C, New Triterpenoid Oligosaccharides from the Plants of the Subfamily Scilloideae
Authors: Mimaki Yoshihiro , Ori Kazutomo , Kubo Satoshi , Sashida Yutaka , Nikaido Tamotsu , Song Lian-Gang , Ohmoto Taichi 
Published: May 2006

Abstract
Three new triterpenoid oligosaccharides, scillasaponins A, B, and C, were isolated from the fresh bulbs of Eucomis bicolor, Scilla peruviana, and Chionodoxa gigantea, respectively. Their structures were established by extensive NMR studies. Scillasaponins were active as a cyclic AMP phosphodiesterase inhibitor.
Alkylation of Acetaldehyde with Methanol over Titanium Oxide-supported Vanadium Oxide
Authors: Wang Fey-long , Lin Yi-hsuan 
Published: May 2006

Abstract
Among various titanium oxide-supported vanadium oxides (V/TiO2), V(2.5 wt%)/TiO2 showed the highest catalytic activity at 350 °C in the reaction of methanol and acetaldehyde, selectively yielding propionaldehyde and isobutyraldehyde. Total alkylated products selectivity attained 83% at 76% acetaldehyde conversion.
Synthesis and Crystal Structure of Molybdenum-Trisubstituted Tungstophosphate Anion Salt, A-β-[N(CH3)4]3[PMo3W9O40]
Authors: Kawafune Isao , Matsubayashi Gen-etsu 
Published: May 2006

Abstract
The molybdenum-trisubstituted tungstophosphate anion, [PMo3W9O40]3−, was synthesized by a reaction of Na2MoO4 and A-Na9[PW9O34] in an HCl and 1,4-dioxane mixed solution. X-ray crystal structure analysis of the tetramethylammonium salt of the mixed addenda polyanion revealed the anion geometry as an A-type trisubstituted, β-isomer.
Synthesis of Tetrathiafulvalene Derivatives by the Use of Organoaluminium Reagents
Authors: Mori Takehiko , Inokuchi Hiroo 
Published: May 2006

Abstract
Bis(dimethylaluminium) salts of ethanedithiol, 1,2-benzenedithiol, and ethylenedithiol react with 1,3-dithiolane-2-carboxylate esters to give dihydro- and tetrahydro-tetrathiafulvalenes as well as tetrathiafulvalene derivatives.
Inhibition of Intervesicular Aggregation of Phospholipid Vesicles by Incorporation of Dialkyl Oligosaccharide Glycerol
Authors: Takeoka Shinji , Sakai Hiromi , Takisada Mikimasa , Tsuchida Eishun 
Published: May 2006

Abstract
1,2-Di-O-octadecyl-3-O-α(β)-maltopentaosyl-rac-glycerol (DOMPG) was incorporated into lipid vesicles to modify the surface of the vesicles. The aggregation of small unilamellar vesicles below the gel-to-liquid crystalline phase transition temperature and the aggregation of negatively-charged vesicles by the addition of calcium ion were effectively inhibited.
Structures of Sideroxylonals from Eucalyptus sideroxylon
Authors: Satoh Hirofumi , Etoh Hideo , Watanabe Naoharu , Kawagishi Hirokazu , Arai Koshi , Ina Kazuo 
Published: May 2006

Abstract
The structures of two novel isopentyl phloroglucinol dimers, designated as sideroxylonals A and B were deduced on the basis of proton magnetic resonance, 13C-nuclear magnetic resonance and mass spectral evidences.
Definitive Evidence for Enantioselective Catalysis over “Molecular Footprint” Catalytic Cavities Chirally Imprinted on a Silica(Alumina) Gel Surface
Authors: Matsuishi Tamae , Shimada Toyoshi , Morihara Kensaku 
Published: May 2006

Abstract
“Molecular footprint”-like catalytic cavities were marked on a silica(alumina) gel surface by the authors’ molecular imprinting method using a chiral mandelic acid derivative ((−)-(5R)-5-phenyl-2,4-diketo-tetrahydro-oxazole); these chirally imprinted cavities displayed distinct enantioselective catalysis on the transacylation of the corresponding substrates, N-carboxy-(R)-phenylglycine anhydrides and the (S)-isomer.
Preparation of Organosol of Noble Metal Clusters with Novel Method
Authors: Toshima Naoki , Liu Hanfan 
Published: May 2006

Abstract
The organosols of noble metal clusters such as monometallic Pt, Pd, and Rh clusters, and bimetallic Au/Pd, Pd/Pt, and Pt/Rh clusters in organic media like butanol were prepared by reversible transfer of the cluster particles from an aqueous phase to the organic phase by using a coordination capture technique with triphenylphosphosphine. The electronic spectra and transmission electron micrographs of the dispersed clusters before and after the transfer indicate that no change occurs in size and size distribution during the transfer.