bluuebunny/crossref_metadata_2025_split huggingface dataset:
Extensively Conjugated Homologues of Selenophene-TCNQ as New Electron Acceptors
Authors: Yui Koji , Aso Yoshio , Otsubo Tetsuo , Ogura Fumio 
Published: July 2006

Abstract
5,5′-Bis(dicyanomethylene)-5,5′-dihydro-2,2′-biselenophene, its 3,3′-dibromo derivative, and 5,5″-bis(dicyanomethylene)-5,5″-dihydro-2,2′:5′,2″-terselenophene have been synthesized as extensively conjugated homologues of selenophene-TCNQ. The 3,3′-dibromo compound posseses a considerably better accepting character than selenophene-TCNQ or the other extended homologues and can form highly conductive molecular complexes.
Glucose Oxidase-Modified SnO2 Electrode as Electrochemical Glucose Sensor
Authors: Watanabe Tadashi , Okawa Yusuke , Tsuzuki Hirohiko , Yoshida Shoichiro , Nihei Yoshimasa 
Published: July 2006

Abstract
Glucose oxidase was chemically immobilized on an SnO2 electrode via 1) 2,4,6-trichloro-1,3,5-triazine, 2) 3-aminopropyltriethoxysilane and glutaraldehyde, or 3) crosslinkage of enzyme molecules by glutaraldehyde. These enzyme-immobilized electrodes were compared regarding the performance as amperometric glucose sensors.
Preparation of Novel Electron-Accepting Quinone Methide Imines and Their Polymerizations
Authors: Iwatsuki Shouji , Itoh Takahito , Itoh Hiromu 
Published: July 2006

Abstract
N,7,7-Tricyanoquinone methide imine (1), N,11,11-tricyano-1,4-naphthoquinone methide imine (2), and N,15,15-tricyano-9,10-anthraquinone methide imine (3) were successfully prepared as novel electron-accepting quinone methide imine compounds. 1 is homopolymerizable with free radical and anionic initiators, while 2 and 3 are not.
Effects of Sensitizer Spin Multiplicity on Electron-Transfer Initiated Isomerization of cis-Stilbene
Authors: Kuriyama Yasunao , Arai Tatsuo , Sakuragi Hirochika , Tokumaru Katsumi 
Published: July 2006

Abstract
The excited singlet and triplet states of 2,4,6-triphenylpyrylium were quenched by cis- and trans-stilbene to generate their radical cations; however, isomerization of stilbene occurred through radical cations only when the triplet state of the sensitizer was quenched by the cis isomer.
A New Synthesis of cis-Diol from Olefin Using Iodine-Copper(II) Acetate
Authors: Horiuchi C Akira , Satoh J Yasuo 
Published: July 2006

Abstract
The reaction mixtures of 5α-cholest-2-ene with iodine and copper(II) acetate were converted with potassium hydroxide in methanol-water to give the more hindered 2β, 3β-diol in high yield. Cyclohexene and cycloheptene similarly gave the corresponding cis-diols in good yield. This new synthetic method afforded several advantage over the Prevost reaction.
Synthesis of Carbocyclic Lignan Variants Related to Podophyllotoxin
Authors: Saito Kitoshi , Nishimura Yoshio , Kondo Shinichi , Takeuchi Tomio 
Published: July 2006

Abstract
Carbocyclic lignan variants related to podophyllotoxin were synthesized by a stereoselective BF3-catalyzed coupling of podophyllotoxin derivative with chiral aminocyclitols.
Perfluoroalkyl-thwarted Rearrangement of Quinol Esters. Formation of Catechol Derivatives via 1,3-Migration of Acyloxyl Group
Authors: Suzuki Hitomi , Shiraishi Yasukazu , Shimokawa Kazuhiro , Uno Hidemitsu 
Published: July 2006

Abstract
Treatment of 4-perfluoroalkyl-4-quinols with acetic anhydride-sulfuric acid was found to lead to 1,2- and 1,3-migration of acetoxyl group in initially formed quinol acetates followed by aromatization to give a mixture of 4-perfluoroalkylresorcinol diacetate and 4-perfluoroalkylcatechol diacetate.
Molecular Interactions through Carbonyl Groups. Dimerizations of Dibenzylideneacetone and Dicinnamylideneacetone at Low Temperature
Authors: Hoshi Toshihiko , Okubo Jun , Kawase Hiromitsu , Inoue Hiroyasu , Sakurai Tadamitsu , Kobayashi Michio 
Published: July 2006

Abstract
From the UV spectral data together with the MO calculated results, it has been suggested that dibenzylideneacetone or dicinnamylideneacetone forms a noncentrosymmetric dimer in a nonpolar matrix at low temperature. The dimerizations occur through interactions between carbonyl groups.
MoO2(acac)2 Complex as a Reagent for Oxidative Cleavage of vic-Diols
Authors: Kaneda Kiyotomi , Morimoto Kenichi , Imanaka Toshinobu 
Published: July 2006

Abstract
MoO2(acac)2-t-BuOOH system has high activity for oxidative cleavage of tertiary and secondary vic-diols. MoO2(acac)2 cleaves the diols to give cafbonyl compounds in the absence of t-BuOOH.
Vapor-phase Hydration of Dicyclopentadiene Catalyzed by Niobic Acid
Authors: Okazaki Susumu , Harada Hirofumi 
Published: July 2006

Abstract
Vapor-phase hydration of dicyclopentadiene in a flow system was promoted by niobic acid. Maximum conversion to the hydrated product was obtained at around the boiling point of dicyclopentadiene, 170 °C. Niobic acid rapidly decreased its catalytic activity when it was heat-treated at temperatures higher than 300 °C.
Synthesis and Electrochemical Properties of 2,3,6,7-Tetrahydro-1,4,5,8-tetrathiaanthracene (HTA) and Its Derivatives
Authors: Nabeshima Tatsuya , Iwata Satoru , Furukawa Naomichi , Morihashi Kenji , Kikuchi Osamu 
Published: July 2006

Abstract
2,3,6,7-Tetrahydro-1,4,5,8-tetrathiaanthracene (HTA), 9-amino-HTA, 9-acetyl-HTA, 9,10-dimethyl-HTA, and 1,4,5,8-tetrathiaanthracene have been synthesized. Electrochemical properties and preparation of the charge transfer complexes of HTAs with several acceptors are also reported.
Study of Charge Compensation Mechanism in IrOx Electrochromic Reactions by In Situ Electrogravimetry
Authors: Masuda Hideki , Yoshino Takako , Arai Kenji , Baba Nobuyoshi 
Published: July 2006

Abstract
The mechanism of the charge compensation in the coloring/bleaching reactions in IrOx films was studied by in situ electrogravimetry. The weight change measured with a liquid phase quartz crystal microbalance indicated that the cations were ejected from the IrOx film to a bulk electrolyte during anodic coloration.
Reaction of 4,4-Diethyl-1,2-dithiolane with Grignard Reagents
Authors: Tazaki Masato , Nagahama Shizuo , Takagi Makoto 
Published: July 2006

Abstract
Clean ring cleavage of 1,2-dithiolane by carbanion was first recognized for 4,4-diethyl-1 ,2-dithiolane (3) in the reaction with Grignard reagents, the reactivity being attributed to the low polymerizing tendency of 3, similar to that of the enzyme-bound lipoic acid.
Regio- and Stereoselective Trapping of Pentadienyl Anion by a Tin Electrophile
Authors: Naruta Yoshinori , Nishigaichi Yutaka , Maruyama Kazuhiro 
Published: July 2006

Abstract
Electrophilic trapping of the pentadienyl anions bearing a methoxymethyl group with Me3SnBr gives Z-pentadienylstannanes in high regioselectivity regardless of the structure of the anion.
Rate-Determining Electron Transfer from Allylic Grignard Reagents to Benzophenone
Authors: Matsuyama Toyoki , Yamataka Hiroshi , Hanafusa Terukiyo 
Published: July 2006

Abstract
The reactions of allyl magnesium bromide and crotyl magnesium bromide with benzophenone were determined to proceed via a rate-determining electron transfer mechanism by means of the isotope effect and substituent effect technique.
Efficient Optical Resolution of 2,2′-Dihydroxy-1,1′-binaphthyl and 10,10′-Dihydroxy-9,9′-biphenanthryl by Complex Formation with Novel Chiral Host Compounds Derived from Tartaric Acid
Authors: Toda Fumio , Tanaka Koichi , Nassimbeni Luigi , Niven Margaret 
Published: July 2006

Abstract
2,2′-Dihydroxy-1,1′-binaphthyl and 10,10′-dihydroxy-9,9′-biphenanthryl were resolved efficiently by complex formation with novel chiral host compounds derived from tartaric acid, (R,R)-(+)-2,3-dimethoxy-N,N,N′,N′-tetramethylsuccinamide and (R,R)-(+)-N,N,N′,N′ -tetramethyl-2,2-dimethyl-1,3-dioxolane-trans-4,5-dicarboxamide, respectively. X-Ray crystal structure of these complexes was studied.
Application of the Benzyloxycarbonyloxymethyl Moiety to a Protective Group of 5-Fluorouracil. Selective Alkylation of Amide Nitrogen of the Uracil Ring
Authors: Nagase Toshio , Seike Kanzo , Shiraishi Kazuto , Yamada Yutaka , Ozaki Shoichiro 
Published: July 2006

Abstract
Selective alkylation of 5-fluorouracil using the benzyloxycarbonyloxymethyl moiety as a protective group of amide nitrogen of the uracil ring is described. Protection, alkylation and deprotection were carried out in high yields.
Electrocatalytic Oxidation of Nerol with Nitroxyl Radical Covalently Immobilized to Poly(acrylic acid) Coated on Carbon Electrodes
Authors: Osa Tetsuo , Akiba Uichi , Segawa Isao , Bobbitt James M 
Published: July 2006

Abstract
Glassy carbon electrode coating poly(acrylic acid) immobilized covalently with 2,2,6,6-tetramethylpiperydinyl-1-oxy was characterized electrochemically and a similar modified carbon felt electrode was utilized successfully to electrocatalytic oxidation of nerol.
A Short Synthesis of 15-Dehydroprostaglandin B1 Methyl Ester
Authors: Naora Hirokazu , Ohnuki Takashi , Nakamura Asao 
Published: July 2006

Abstract
A new synthetic method for 15-dehydroprostaglandin B1 methyl ester (15-dehydroPGB1 methyl ester) in four steps from commercially available starting materials is described.
Highly Stereoselective Total Synthesis of Plaunotol
Authors: Sato Kikumasa , Miyamoto Osamu , Inoue Seiichi , Iwase Norimichi , Honda Kiyoshi 
Published: July 2006

Abstract
Highly stereoselective total synthesis of plaunotol has been achieved by the application of the (Z)-stereoselective direct Wittig olefination to α-alkoxy ketones having geranyl-acetone skeleton.
Deoxygenat ion of 1,3-Diene 1,4-Endoperoxides by Tin(II) Chloride
Authors: Kohmoto Shigeo , Kasai Satoru , Yamamoto Makoto , Yamada Kazutoshi 
Published: July 2006

Abstract
The reaction of bicyclic 1,3-diene 1,4-endoperoxides with SnCl2 re-generated the corresponding dienes in 15–70% yield. The efficiency of the deoxygenation depended on the structure of peroxides. The results were compared with those of Fe(II) as well as Pd(O) assisted reactions.
The Crystal Structure, Absolute Configuration and Circular Dichroism of (−)630CD- and (+)630CD-cis-Bis[2-(2-benzoxazolyl)phenol-N]dichloroplatinum(II)·ethanol
Authors: Furuhashi Akiko , Endo Kunihiko , Ouchi Akira , Saito Yoshihiko 
Published: July 2006

Abstract
The crystals of the title complex resolve spontaneously. The enantiomeric crystals were separated under a microscope. They are orthorhombic, space group P212121. This is a square planar complex with 2Cl in cis-positions. The ligand acts as a unidentate with its N atom. The absolute configuration was correlated with the CD spectrum in microcrystalline state.
Synthesis of Octaalkyl- and Octaarylporphyrins from Nitroalkenes
Authors: Ono Noboru , Maruyama Kazuhiro 
Published: July 2006

Abstract
Symmetrically substituted octaalkyl- and octaarylporphyrins are readily prepared by the reduction of 2-ethoxycarbonyl-3,4-diarkyl (or diaryl)pyrroles with LiAlH4 followed by treatment with acetic acid and oxidizing agents.
Preparation of Bi–Sr–Ca–Cu–O Films by Chemical Vapor Deposition with Metal Chelate and Alkoxide
Authors: Yamane Hisanori , Kurosawa Hideyuki , Hirai Toshio 
Published: July 2006

Abstract
Bi–Sr–Ca–Cu–O films were chemically deposited on yttria stabilized zirconia substrates at 1083 K and 130 Pa using a bismuth alkoxide and β-diketonate chelates with Sr, Ca, and Cu as source materials.
Trioxazolo[23]metacyclophane. Synthesis and Properties of a Novel [23]Metacyclophane Annelated with Three Oxazole Rings
Authors: Sasaki Hideaki , Nakagawa Hidetoshi , Khuhara Masahiro , Kitagawa Tokujiro 
Published: July 2006

Abstract
The title compound (6) was synthesized by the base-induced condensation of 3-(isocyanotosylmethyl)benzaldehyde as a new bifunctional reactant for the synthesis of [2n]metacyclophanes. The treatments of 6 with silver triflate in several molar ratios in THF at room temperature afforded only 2:1 silver triflate complex on the basis of the 1H NMR and the analytical data.
Synthesis of 2,4-Dideoxy-4-[(S)-methyl- and (R)-cyclohexylphosphinyl]-α,β-d-erythro-pentofuranoses. The First P-in-Ring Sugar Analogues of 2-Deoxy-d-ribofuranose Type
Authors: Yamamoto Hiroshi , Noguchi Ayashi , Torii Kenji , Ohno Keiji , Hanaya Tadashi , Kawamoto Heizan , Inokawa Saburo 
Published: July 2006

Abstract
Starting with 3-deoxy-1,2-O-isopropylidene-α-d-ribo-hexofuranose, methyl 2,4-dideoxy-4-[(methoxy)methyl- and cyclohexylphosphinyl]-d-glycero-pentopyranosides were prepared in a 9 step sequence (20–25% overall yield). These were converted into the title compounds, which were characterized as the 1,3,5-tri-O-acetates.
Novel Intermolecular Heterocycle Exchange Reaction of Cyclohepta[b][1,4]benzoxazines and Their S-Analogs with 1,2-Bifunctional Reagents
Authors: Nozoe Tetsuo , Shindo Kimio , Ishikawa Sumio 
Published: July 2006

Abstract
The benzoxazine and the benzothiazine moieties of cyclohepta[b][1,4]benzoxazines and their S-analogs were easily exchanged with o-aminobenzenethiol, o-phenylenediamine and other related 1,2-bifunctional reagents in ethanol. The exchange of the two fused heterocycles of a tropylium compound is also described.
Practical Reversibility of HCN Synthesis by Electric Discharge in CH4/N2 Mixture
Authors: Tanaka Kazunori , Morio Toshiki , Takagi Yuzuru 
Published: July 2006

Abstract
Electric discharge in CH4/N2 mixture yielded HCN and H2 as main products, accompanied by transient formation of C2- and C3- hydrocarbons. The practical reversibility of this HCN synthesis has been demonstrated by obtaining CH4 and N2 by electric discharge in HCN/H2 mixture.
Reductive Phosphorylation of 1,2-Dithiolanes with Dialkyl Phosphites
Authors: Tazaki Masato , Nagahama Shizuo , Takagi Makoto 
Published: July 2006

Abstract
Lipoamide was reductively phosphorylated by dialkyl phosphites in the presence of triethylamine with high regioselectivity. Acid anhydride did not interfere with the phosphorylation. Thus, 6-S-acyldihydrolipoamides bearing 8-S-phosphoryl group were synthesized in one-pot reaction in good yields.
A New Feeding-Deterrent Diterpenoid from the Brown Alga Dilophus okamurai Dawson
Authors: Kurata Kazuya , Shiraishi Kazunari , Takato Tohru , Taniguchi Kazuya , Suzuki Minoru 
Published: July 2006

Abstract
A new unusual metabolite with feeding-deterrent activity, closely related to spatane-type diterpenoids, has been isolated from the title alga, and its structure was determined by the spectroscopic method.
Vapor-Phase Reduction of Aldehydes and Ketones with 2-Propanol over Hydrous Zirconium Oxide
Authors: Shibagaki Makoto , Takahashi Kyoko , Kuno Hideyuki , Kawakami Hiroshi , Matsushita Hajime 
Published: July 2006

Abstract
Vapor-phase reduction of aldehydes and ketones with 2-propanol was carried out over hydrous zirconium oxide. The reduction proceeded efficiently to give corresponding alcohols. The oxide worked continuously for 10 h without being inactivated.
Photolysis of β-(o-Methylthiophenyl)vinyl Bromides. A Versatile Synthesis of Benzo[b]thiophens
Authors: Kitamura Tsugio , Kobayashi Shinjiro , Taniguchi Hiroshi 
Published: July 2006

Abstract
Exclusive cyclization in photolysis of β-(o-methylthiophenyl)vinyl bromides to give benzo[b]thiophens is described.
Kinetic Pressure Effect on Photoreduction of 2,4,6-Trinitrobenzoic Acid as Studied by Time-Resolved ESR
Authors: Sueishi Yoshimi , Kuwata Keiji 
Published: July 2006

Abstract
Kinetic time-resolved ESR study was carried out on Photoreduction of 2,4,6-trinitrobenzoic acid (TNA). The CIDEP signal decayed in a biphasic manner, and the activation volumes for the fast and the slow decays were 26 and 11 cm3 mol−1, respectively.
Litophynin C, a New Insect Growth Inhibitory Diterpenoid from a Soft Coral Litophyton sp.
Authors: Ochi Masamitsu , Futatsugi Kensuke , Kume Yasuhiro , Kotsuki Hiyoshizo , Asao Kazuhiko , Shibata Kozo 
Published: July 2006

Abstract
A new diterpenoid, litophynin C, which exhibits insect growth inhibitory activity against the silkworm, Bombyx mori L., has been isolated from a soft coral Litophyton sp., and its structure including the absolute configuration established on the basis of spectral and chemical evidence.
Selective Hydrogenation of Crotonaldehyde to Crotyl Alcohol on Ag-MnO2/Al2O3·5AlPO4 Catalysts
Authors: Nagase Yoshinori , Muramatu Hideaki , Sato Takuzi 
Published: July 2006

Abstract
The activity and selectivity of Ag-MnO2/Al2O3·5AlPO4 catalysts for the hydrogenation of crotonaldehyde to crotyl alcohol have been investigated in liquid phase. When MnO2 was added to the catalyst, the activity and selectivity for the reaction were remarkably improved to give the conversion of 100 mol% and the selectivity of 69.5%.
Oxidative Cleavage of 4,6-O-Benzylidene Ring with t-Butyl Hydroperoxide and Copper(II) Chloride. Preparation of Methyl 4-O- and 6-O-Benzoylhexopyranoside Derivatives
Authors: Sato Ken-ichi , Igarashi Tetsutaro , Yanagisawa Yukio , Kawauchi Nobuya , Hashimoto Hironobu , Yoshimura Juji 
Published: July 2006

Abstract
Copper(II) chloride and palladium(II) acetate were found to be highly effective catalysts for oxidative cleavage of O-benzylidene ring with t-butyl hydroperoxide. Using the former catalyst 4,6-O-benzylidenehexopyranoside derivatives were converted into the corresponding 4- and 6-benzoates in high yields. This reaction was also applicable for conversion of benzyl group into benzoyl one.
Preparation of Hexafluoroacetone by Vapor Phase Oxidation Of Hexafluoropropene
Authors: Kurosaki Akito , Okazaki Susumu 
Published: July 2006

Abstract
Hexafluoroacetone was readily formed by circulating a gaseous mixture of hexafluoropropene and oxygen over platinum group metals supported on carbon. Reaction temperatures, ranging from 130 to 170 °C, gave both high selectivity and conversion for the hexafluoroacetone formation using a Pd/C catalyst.
Effect of Univalent Cations on the Rotational Motion of Perchlorate Ion in Aqueous Solution
Authors: Masuda Yuichi , Yamatera Hideo 
Published: July 2006

Abstract
The rotational correlation times of ClO4− in D2O solutions of lithium, sodium, and ammonium perchlorates (0.1–2 mol/kg) were determined by measuring the 17O spin-lattice relaxation rates arid calculating the electric field gradient at the 17O nucleus by an ab initio MO method. The correlation time increased with increasing concentration of the perchlorates. The effect of cations increased in the order: Li+ &lt; NH4+ &lt; Na+.
Preparation and Crystal Structure of a New Hetero-metal Mixed Valence CuII–PtIVComplex with One Dimensional Chain Structure [Cu(en)2][PtCl2(en)2](ClO4)4
Authors: Oshio Hiroki , Toriumi Koshiro , Bando Shunji 
Published: July 2006

Abstract
Bis(ethylenediamine)copper(II) trans-dichlorobis(ethylenediamine)platinum(IV) perchlorate was prepared and the halogen-bridged linear chain structure has been determined by X-ray diffractometry. The copper and platinum complexes are stacked alternately in the chain. Temperature dependence of the magnetic susceptibility and EPR data indicate no strong magnetic interaction between copper atoms.
Novel Clathrate Compound of Cadmium Cyanide Host with an Adamantane-like Cavity. Cadmium Cyanide-Carbon Tetrachloride(1/1)
Authors: Kitazawa Takafumi , Nishikiori Shin-ichi , Kuroda Reiko , Iwamoto Toschitake 
Published: July 2006

Abstract
Carbon tetrachloride molecule is accommodated in the cavity formed in the three-dimensional framework of cadmium cyanide to give the title clathrate compound. The cavity has a shape of adamantane-like cage edged with –Cd–CN–Cd– linkage where the Cd atom takes a tetrahedral configuration.
Wavelength- and Temperature-dependent Photolysis of a Diphosphene. Generation of 2,4,6-Tri-t-butylphenylphosphinidene and E/Z Isomerization
Authors: Yoshifuji Masaaki , Sato Takahiro , Inamoto Naoki 
Published: July 2006

Abstract
A phospha-indane derivative was obtained via intramolecular C–H insertion of the phosphinidene generated as an intermediate by the photolysis of E-1,2-bis(2,4,6-tri-t-butylphenyl)diphosphene whereas the photolysis through a Pyrex filter at −40 °C gave an equilibrium mixture of E and Z.
Asymmetric Syntheses of (−)-Malyngolide and (−)-Frontalin by Utilizing Bakers’ Yeast Reduction of S-Ethyl 2-Cyclopentanonecarboxylthioate
Authors: Sato Toshio , Maeno Hajime , Noro Tomohiro , Fujisawa Tamotsu 
Published: July 2006

Abstract
Bakers’ yeast reduction of S-ethyl 2-cyclopentanonecarboxylthioate affords optically pure S-ethyl (1R,2S)-2-hydroxycyclopentanecarboxylthioate which is stereoselectively converted into (−)-malyngolide and (−)-frontalin.
Adsorption Characteristics of Lithium in Sea Water with Coprecipitated Alumina-Magnesia Gel
Authors: Kaneko Shoji , Takahashi Wataru 
Published: July 2006

Abstract
Alumina-magnesia mixed-oxide gel exhibited adsorptive ability for lithium in sea water attributed to weak acidic sites and micro-pores of diameter 20–30 Å. The adsorption of lithium proceeded predominantly by the mechanism of ion-exchange, on which the facility was shown in the order of Na+&gt; H+&gt; NH4+. The elution of lithium adsorbed on the gel was complete with dilute hydrochloric acid.
Aminated Polystyrene-Bound Rhodium Carbonyl Clusters as a Catalyst for Deoxygenation of Various N–O Bonds
Authors: Kaneda Kiyotomi , Takemoto Tetsuya , Imanaka Toshinobu 
Published: July 2006

Abstract
Aminated polystyrene-bound rhodium carbonyl cluster complexes are prepared by treatment of Rh6(CO)16 with various aminated polystyrenes. The polymeric rhodium complexes show a catalytic activity for deoxygenation of nitro compounds, oximes, hydroxylamines, and N-oxides under the conditions using CO and H2O. The recovered rhodium complexes maintain the deoxygenation ability with a small loss of the selectivity.
Synthesis and Characterization of the Di(μ-oxo)Dimanganese(III,IV) Complex with Carboxylato Groups as a Terminal Ligand
Authors: Suzuki Masatatsu , Senda Hitoshi , Kobayashi Yumiko , Oshio Hiroki , Uehara Akira 
Published: July 2006

Abstract
A dinuclear manganese(III,IV) mixed valence complex [Mn2(N3O-py)2(O)2]ClO4·2.5H2O was prepared (N3O-py:N,N-bis(2-pyridylmethyl)glycinate) and its crystal structure was determined by X-ray crystal structure analysis. The analysis showed that two manganese ions are linked by two oxo bridges with the separation of 2.656(2) Å and the structural difference between manganese(III) and manganese(IV) moieties is relatively small compared to those of complexes so far reported.
A Photolysis of N-[3-(2-Hydroxy-3-methoxyphenyl)propyl]-6-bromobenzamides. One-step Synthesis of 5,6-Dihydro-4H,8H-pyrido[3,2,1-de]phenanthridin-8-ones
Authors: Hoshino Osamu , Ogasawara Hiromichi , Hirokawa Akihisa , Umezawa Bunsuke 
Published: July 2006

Abstract
A photolysis of phenolic bromoarylalkanamides in methanol containing sodium hydroxide gave two kinds of 5,6-dihydro-4H,8H-pyrido[3,2,1-de]phenanthridin-8-ones accompanied with debrominated amides.
Concentration Dependence of the Rotational Motion of Tetraphenylborate and Tetraphenylarsonium Ions in Aqueous Solution. Effect of Their Self-Association
Authors: Masuda Yuichi , Yokoyama Haruhiko 
Published: July 2006

Abstract
The 13C spin-lattice relaxation times and NOE for the para carbons of Ph4As+ and BPh4− were measured in D2O and CD3OD. The osmotic coefficients were also determined in the aqueous solutions of Ph4AsCl+ and NaBPh4. A remarkable increase in the rotational correlation time of the Ph4As+ ion with increasing concentration was attributed to the formation of aggregates containing two or more Ph4As+ ions.
Molecular Recogniton of Polysaccharide-Coated Liposomes. Importance of Sialic Acid Moiety on Liposomal Surface
Authors: Sunamoto Junzo , Sakai Kouichi , Sato Toshinori , Kondo Hiroki 
Published: July 2006

Abstract
Conjugation of sialic acid to cholesterol-substituted polysaccharides has been carried out. Liposomes, which are coated with sialic acid-modified polysaccharide, were significantly aggregated by sialic acid-specific lectin, and inhibition of phagocytosis of the liposomes by phagocytic cells was observed. Appropriate treatment of the liposomes with a neuraminidase made the efficient removal of sialic acid from the polysaccharide on the liposomal surface.