bluuebunny/crossref_metadata_2025_split huggingface dataset:
2,5-DIAZACYCLOPENTADIENYUDENE: A STANDARD CARBENE OR A HIGHLY REACTIVE DIRADICAL ?
Authors: Bru Núria , Vilarrasa Jaume 
Published: July 2006

Abstract
2,5-Diazacyclopentadienylidene (2H-imidazolylidene), generated either by photolysis or thermolysis from 2-diazo-2H-imidazole, reacts with benzene derivatives to give mainly a mixture of o-, m-, and p-substituted 2-phenylimidazoles. The carbene shows a strong diradical character, in sharp contrast with the well-known behavior of cyclopentadienylidene.
CYCLOADDITION REACTION OF 3-CYANOINDOLIZINES WITH DIMETHYL ACETYLENEDICARBOXYLATE —FORMATION OF CYCL[3.2.2]AZINES AND 1:2 ADDUCTS
Authors: Uchida Takane , Matsumoto Kiyoshi 
Published: July 2006

Abstract
3-Cyano- and 3-cyano-6,8-dimethylindolizines (1a) and (1b) react with dimethyl acetylenedicarboxylate in refluxing toluene in the presence of Pd–C to give the cycl[3.2.2]azines (4a) and (4b), respectively, while 3-cyano-7-methyl- and 3-cyano-7-benzylindolizines (1c) and (1d) affording the 1:2 adducts (6c) and (6d) along with cycl[3.2.2]azine (4d).
13C CONTACT SHIFTS OF AROMATIC AMINES INDUCED BY GD(FOD)3 AND SPIN DELOCALIZATION MECHANISM: EVIDENCE FOR THE OCCURRENCE OF DIRECT SPIN TRANSFER
Authors: Hirayama Masatoshi 
Published: July 2006

Abstract
The 13C contact shift patterns of several aromatic amines induced by Gd(fod)3 have clearly been interpreted by the superposition of σ-type delocalization of positive spin transferred directly into C1 from the Gd ion and π-type delocalization of the negative spin introduced into the N-lone pair orbital.
RAPID EXCHANGE OF OXYGEN-18 BETWEEN WATER VAPOR AND HETEROPOLY COMPOUNDS BY DIFFUSION OF CRYSTAL WATER
Authors: Sakata Kanji , Misono Mokoto , Yoneda Yukio 
Published: July 2006

Abstract
By means of in situ IR measurement, it was found that rapid and reversible 18O-exchange took place between all bulk oxygen atoms, but P-O oxygen, of 12-molybdophosphoric acid and water vapor, maintaining the Keggin structure. The rapid exchange is likely due to the rapid diffusion of water molecules in the bulk.
COMPARISON OF RUTHENIUM COMPLEXES FOR PHOTOINDUCED METHYL VIOLOGEN REDUCTION AND HYDROGEN EVOLUTION FROM WATER BY HYDROGENASE
Authors: Okura Ichiro , Kim-Thuan Nguyen 
Published: July 2006

Abstract
Highly active photoinduced systems for methyl viologen reduction are developed by using ruthenium complexes with long lifetime at the photoexcited state. The system, which has the higher activity for methyl viologen reduction, has the higher activity for hydrogen evolution when hydrogenase [EC 1.12.2.1] was added.
TRANSPOSITION OF CO2 GROUP IN 2-FURANONES CATALYZED BY PALLADIUM (0)
Authors: Inoue Yoshio , Hibi Takuo , Kawashima Yasuhiko , Hashimoto Harukichi 
Published: July 2006

Abstract
3,3-Dialkyl-4-methylenedihydro-2(5H)-furanone 1 isomerized into another furanone, 4-methyl-5,5-dialkyl-2(5H)-furanone 2 with transpositin of the CO2 group in the presence of a catalytic amount of Pd(diphos)2[diphos=Ph2PCH2CH2PPh2].
BUTTRESSING EFFECT IN OPPOSITE DIRECTION
Authors: Yamamoto Gaku , Suzuki Masahiko , Oki Michinori 
Published: July 2006

Abstract
Rotational barrier in 1,2,3,4-tetrachloro-9-(1,1-dimethyl-2-phenylethyl)triptycene was 1.8 kcal/mol lower than that in the corresponding 1,4-dichloro derivative. This apparently anomalous “reverse” buttressing effect may be originated from the tilting of the 9-substituent away from the peri-chloro group in this highly congested system.
ADSORPTION OF CESIUM FROM AQUEOUS SOLUTIONS USING A CRYSTALLINE HYDROUS TITANIUM DIOXIDE FIBERS
Authors: Komatsu Yu , Fujiki Yoshinori 
Published: July 2006

Abstract
The adsorption of cesium in aqueous solutions has been studied by using an ion-exchanger of crystalline hydrous titanium dioxide fibers. Cesium can be perfectly adsorbed from alkaline solutions, and the distribution ratio of cesium is higher than that of lithium, sodium, potassium, or rubidium. This method can be applied to cesium immobilization in the radwastes under mild alkaline conditions.
LIPOSOME IMMUNOELECTRODE
Authors: Shiba Kunio , Watanabe Tokuko , Umezawa Yoshio , Fujiwara Shizuo , Momoi Hironao 
Published: July 2006

Abstract
A new immunoelectrode system is reported, where thin-layer potentiometric measurement of complement and antibody levels in microliter serum was performed using tetrapentylammonium ion(TPA+) loaded liposomes and TPA+ ion selective electrode.
PREPARATION OF (−)-(M)-[2.2]PARACYCLOPHANO-HEXAHELICENE FROM (−)-(M)-1,4-DIMETHYLHEXAHELICENE AND ABSOLUTE CONFIGURATION OF 4-SUBSTITUTED [2.2]PARAOYCLOPHANES
Authors: Nakazaki Masao , Yahamoto Koji , Maeda Miharu 
Published: July 2006

Abstract
Photo-cyclization of a cis–trans mixture of the 1,2-diarylethylene precursor 1 gave 1,4-dimethylhexahelicene (2) whose levorotatory enantiomer with (M)-helicity was converted into (−)-(M)-[2.2]paracyclophano-hexahelicene (7), mp 236–237°C, [α](abs)577-5520°1) confirming the (R)-configuration previously assigned to (−)-[2.2]paracyclophanecarbaldehyde (8).
CHALCOMORACIN, A NATURAL DIELS–ALDER ADDUCT FROM DISEASED MULBERRY
Authors: Takasugi Mitsuo , Nagao Shigemitsu , Masamune Tadashi , Shirata Akira , Takahashi Kokichi 
Published: July 2006

Abstract
The structure elucidation of a new phytoalexin, isolated from diseased mulberry leaves and designated as chalcomoracin, is described. The compound is regarded biogenetically as a Diels–Alder adduct of a chalcone, isolated newly from diseased mulberry shoots, and a substituted 2-phenylbenzofuran.
ELECTROLYTIC METHANOLYSIS OF ACYLATED AMINO SUGARS
Authors: Imagawa Takeshi , Nakashima Yasushi , Kawanisi Mituyosi 
Published: July 2006

Abstract
Electrolysis of 2-acetamido-1,3,4,6-tetra-O-acetyl-2-deoxy-α- or β-d-glucose in methanol gives specifically 1-deacetylated product, 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-α-d-glucose, while methyl 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-α-d-glucoside is deacetylated to yield 2-acetamido-6-O-acetyl-2-deoxy-and 2-acetamido-2-deoxy-α-d-glucosides.
FIRST SYNTHESIS OF AN EPIMER OF (±)-PENTENOMYCIN I
Authors: Shono Tatsuya , Matsumura Yoshihiro , Yamane Shin-ichiro , Suzuki Masahito 
Published: July 2006

Abstract
An epimer of pentenomycin I was first synthesized starting from a furan derivative. The synthetic route involves acid-catalyzed transformation of a 2,5-dihydro-2,5-dimethoxyfuran derivative to a cyclopentenone derivative, which is a key intermediate in the synthesis of the expected compound.
ADSORPTION OF URANIUM ION IN SEA WATER ON COPRECIPITATED SILICA-TITANIA GEL
Authors: Kaneko Shoji , Okuda Shungo , Nakamura Motoshi , Kubo Yasushi 
Published: July 2006

Abstract
Homogeneously coprecipitated silica-titania gel was shown to exhibit selectively high adsorptive ability for uranium ion in sea water. More than 90% of the adsorbed uranium ion on the gel was eluted with ammonium carbonate solution. The recovery percentage of the ion was found to be above 80%.
RATES OF DISSOCIATION OF N,N-DIBENZYLANILINIUM IONS IN APROTIC SOLVENTS
Authors: Oki Michinori , Yoshioka Yasuhiro , Kihara Hiroshi , Nakamura Nobuo 
Published: July 2006

Abstract
Rates of dissociation of N,N-dibenzylanilinium ions into N,N-dibenzylaniline and proton which is captured by chloride anion have been determined by the dynamic NMR technique. The method supplies information about proton affinities of amine and anion in aprotic solvents.
NITROGEN-15 NUCLEAR MAGNETIC RESONANCE OF [MET5]-ENKEPHALIN: SIGNAL ASSIGNMENTS AND THE EFFECT OF pH TO THE CHEMICAL SHIFTS
Authors: Higuchi Naoki , Kyogoku Yoshimasa , Yajima Haruaki 
Published: July 2006

Abstract
Natural abundance 15N nmr spectra of [Met5]-enkephalin and its constituent peptides were obtained. By comparison of these spectra five 15N resonance signals could be assigned to each amino acid residue. In the pH titration curves of the chemical shifts the effect of the protonation at the C-terminal Met carboxyl group was observed.
SYNTHESIS OF 2-AMINO-2-DEOXY-α-d-GLUCOPYRANOSYL β-d-FRUCTOFURANOSIDE (2-AMINO-2-DEOXY-SUCROSE
Authors: Koto Shinkiti , Inada Shigeru , Zen Shonosuke 
Published: July 2006

Abstract
2-Amino-2-deoxy-α-d-glucopyranosyl β-d-fructofuranoside (2-amino-2-deoxy-sucrose) was synthesized by condensation of 3,4,6-tri-O-acetyl-2-(2,4-dinitroanilino)-2-deoxy-α-d-glucopyranosyl bromide and 1,3,4,6-tetra-O-benzyl-d-fructofuranose with the aid of silver perchlorate and tribenzylamine in benzene, followed by removal of protecting groups.
ASYMMETRIC INDUCTION IN FREE RADICAL ADDITION OF THIOLS TO l-MENTHYL CROTONATE
Authors: Yoshihara Masakuni , Fujihara Hisashi , Maeshima Toshihisa 
Published: July 2006

Abstract
Diastereoface differentiation of l-menthyl crotonate has been achieved in the radical addition with achiral thiols such as thiolacetic acid, mercaptoacetate, and mercaptoacetic acid.
THE FACILE SYNTHESIS OF 2,6-DIAMINO-l,3,5,7-TETRAZACYCOPENT[f]AZULENE
Authors: Yasunami Masafumi , Sasagawa Yasuhiko , Takase Kahei 
Published: July 2006

Abstract
2,6-Diamino-l,3,5,7-tetrazacyclopent[f]azulene, a parent compound of zoanthoxanthins, was synthesized from 5,7-dibromo-2-methoxytropone by two step condensation with guanidine.
A SURPRISING DIFFERENCE IN REACTIVITIES OF 1,2,3,4-TETRACHLORO-9-(2-CHLORO-1,1-DIMETHYLETHYL)TRIPTYCENE ROTAMERS. A REACTION CATALYZED BY LEWIS ACIDS
Authors: Kikuchi Hiromi , Mitsuhashi Tsutomu , Nakamura Nobuo , Oki Michinori 
Published: July 2006

Abstract
±sc-1,2,3,4-Tetrachloro-9-(2-chloro-1,1-dimethylethyl)triptycene was found to react in the presence of TiCl4 at room temperature, whereas the ap isomer required SbCl5 to react. Both gave practically the same mixture of 1,2-dimethyl-7,8,9,10-tetrachloro-1,2,6,10b-tetrahydro-6,10b-o-benzenoaceanthrylenes. The structures of the products were confirmed by independent syntheses.
CYCLOADDITION OF IMIDAZO[2,1-b]THIAZOLES AND THIAZOLO[3,2-a]BENZIMIDAZOLE WITH DIMETHYL ACETYLENEDICARBOXYLATE
Authors: Abe Noritaka , Nishiwaki Tarozaemon , Komoto Noriko 
Published: July 2006

Abstract
Cycloadditions of imidazo[2,1-b]thiazole and thiazolo[3,2-a]benzimidazole with dimethyl acetylenedicarboxylate follow dual courses producing pyrrolo[2,1-b]thiazoles in an aprotic nonpolar solvent or imidazo[1,2-a]pyridines in an aprotic polar solvent.
SYNTHESES AND PROPERTIES OF TRIMETHYLBISDEHYDRO[19]ANNULENONES AND THE BENZANNELATED DERIVATIVES
Authors: Qjima Juro , Wada Kazuyo , Nakagawa Yukiko , Terasaki Masayuki , Juni Yasushi 
Published: July 2006

Abstract
Syntheses of 2,7,12-trimethyl- 5, 7,12,19-trimethyl-8,10-bisdehydro- 6, 14-methylbenzo[h]-10,12-bisdehydro- 7, and 2-methyldibenzo[f,1]-8,10-bisdehydro[19]annulenone 8 are described. The effects of α-methyl substitution and benzannelation for the bisdehydro[19]annulenone ring system are discussed.
BIOTRANSFORMATION OF FOREIGN SUBSTRATES WITH CALLUS TISSUES. TRANSFORMATION OF TERPINEOLS WITH TOBACCO SUSPENSION CELLS
Authors: Suga Takayuki , Aoki Tadashi , Hirata Toshifumi , Lee Ym Sook , Nishimura Osamu , Utsumi Masafumi 
Published: July 2006

Abstract
Biotransformation of foreign substrates with the suspension cells of Nicotiana tabacum was tested with α-terpineol (I), trans-β-terpineol (II), and trans-β-terpinyl acetate (III). It was found that the cultured cells have the ability to hydroxylate the C–C double bond itself as well as its allylic positions.
THE USE OF PRE-COLUMN TO AVOID THE INTERFERENCE OF POLYAMIDES(NYLONS) IN THE HIGH-PERFORMANCE LIQUID CHROMATOGRAPHIC ANALYSIS OF SALICYLATES
Authors: Saotome Toshiyuki , Ogasawara Yoshio , Ishijima Itaru , Masuda Nobuo 
Published: July 2006

Abstract
A new liquid chromatographic procedure for the determination of salicylic acid and its derivatives in the presence of nylon has been developed. By using pre-column(packing material; silica gel) and main-column(packing material; Hitachi gel 3011), salicylates could be easily determined by means of a UV detector (at 254nm) without any interference of nylon. The average salicylates recovery over a concentration range of 50–800 μg/ml was 99.7±1.3%.
ON THE REACTION MECHANISM OF THE RADIOLYSIS OF THE AQUEOUS NICOTINAMIDE ADENINE DINUCLEOTIDE
Authors: Aikawa Masayuki , Honna Takeshi , Sumiyoshi Takashi , Katayama Meiseki 
Published: July 2006

Abstract
The radiolysis studies of aqueous NAD+ solutions have been performed. It is suggested that NADH and (NAD)2 are produced in the irradiated solution. A reaction scheme including a dimerization of NAD free radicals and the formation of NADH is presented.
UNEXPECTED HIGH PHOTOOXIDIZING EFFICIENY OF BENZOPHENONE DERIVATIVES HAVING TETRAALKYLAMMONIUM SUBSTITUENTS
Authors: Tazuke Shigeo , Kawasaki Yasuhiro , Kitamura Noboru , Inoue Takashi 
Published: July 2006

Abstract
Benzophenone derivatives having various tetraalkylammonium ion in the 4 position (II, III, IV, and V) were found to be much more efficient sensitizers than benzophenone(I) in photooxidation of Leuco Crystal Violet(LCV) to Crystal Violet(CV+) in acetonitrile in air, which was interpreted in terms of the cationic atmosphere effect facilitating the primary electron transfer process from LCV to BP*3.
ASYMMETRIC ADDITION OF ACETYLIDE TO ALIPHATIC ALDEHYDES—PREPARATION OF OPTICALLY ACTIVE 5-OCTYL-2(5H)-FURANONE—
Authors: Mukaiyama Teruaki , Suzuki Keisuke 
Published: July 2006

Abstract
Various optically active acetylenic alcohols (40-80%e.e.) were obtained by enantioface-differentiating addition of lithium trimethylsilylacetylide to aliphatic aldehydes utilizing (2S, 2′S)-2-hydroxymethyl-1-[(1-methylpyrrolidin-2-yl)methyl]pyrrolidine as a chiral ligand. Optically active (R)-1-trimethylsilyl-l-undecyn-3-ol (80%e.e.) was transformed into optically active 5-octyl-2(5H)-furanone in good yield.
UNUSUAL BEHAVIOUR OF β-tert-ALKYLSTYRENES IN PHOTOSENSITIZED CIS–TRANS ISOMERIZATION. STRUCTURAL EFFECTS ON TRIPLET ENERGY TRANSFER
Authors: Arai Tatsuo , Sakuragi Hirochika , Tokumaru Katsumi 
Published: July 2006

Abstract
Photostationary state isomer ratios, rate constants for triplet energy transfer, and quantum yields of isomerization were determined for the triplet sensitized isomerization of β-alkylstyrenes (PhCH=CHR, R = CH3, CH2CH3, CH(CH3)2, C(CH3)3, and C(CH3)2CH2CH3) in benzene. The remarkably high ratio of cis-tert-alkylstyrenes at the photostationary state is mainly attributed to lower rate constants for energy transfer to cis-isomers than to trans-isomers.
PHOTOELECTROCHEMICAL STUDIES OF METALLOTETRAPHENYLPORPHYRIN ELECTRODES
Authors: Katsu Takashi , Tamagake Keietsu , Fujita Yuzaburo 
Published: July 2006

Abstract
Eight kinds of metallotetraphenylporphyrins(MeTPP’s) evaporated onto platinum plates were utilized as photoelectrodes in a wet cell, and their photo-induced voltage and current were measured under oxygen atmosphere. The largest photo-voltage(+0.6V) and cathodic photocurrent(4μA/cm2 at +0.1V vs. SCE) were observed with the PdTPP electrode. The photovoltage decreased in the order Pd(0.6V)&gt;H2(0.4V) &gt;Zn≅Cu(0.3V)&gt;Mg(0.2V)&gt;Pb(0.08V)&gt;Ni(0.03V)&gt;Co(∼0V), and, in parallel with this trend, the photocurrent also decreased. It was found that the photoeffect of the MeTPP’s was dependent on the oxidation potential except that the lifetime of the excited state of the porphyrin was extremely short.
INTERACTIONS OF ORGANIC SOLVENTS WITH PHOTORESPONSIVE CAPPED CYCLODEXTRIN IN AQUEOUS SOLUTION
Authors: Ueno Akihiko , Saka Rumiko , Osa Tetsuo 
Published: July 2006

Abstract
Azobenzene-capped β-cyclodextrin (I) forms complexes with organic solvents (methanol, DMSO, DMF, acetone and acetonitrile) according to 1:2 host/guest stoichiometry in its cis state, whereas exhibits nonstoichiometric behavior in its trans state.
OXIDATIVE CYCLISATION WITH THALLIUM (III) ACETATE: SYNTHESIS OF 3(2H)-BENZOFURANONES
Authors: Malaitong Nongyao , Thebtaranonth Chachanat 
Published: July 2006

Abstract
The reaction of thallium (III) acetate with enolisable o-hydroxy and o-methoxyphenyl ketones in acetic acid gave predominantly 2-acetoxy-3(2H)-benzofuranones.
ISOLATION OF BIS(TRISDIMETHYLAMINOPHOSPHONIUMMETHYLIDE)GOLD(I) CHLORIDE
Authors: Yamamoto Yoshihisa 
Published: July 2006

Abstract
Bis(trisdimethylaminophosphoniummethylide)gold(I) chloride, [(Me2N)3P–CH2–Au–CH2–P(NMe2)3]Cl, has been isolated and characterized by analytical and spectroscopic methods. It is stable in water and air.
MOLECULAR STRUCTURE OF DINACTIN
Authors: Nawata Yoshiharu , Hayashi Toshiaki , Iitaka Yoichi 
Published: July 2006

Abstract
The molecular conformation of dinactin, one of the homologues of macrotetrolide antibiotics nonactin, was determined by the X-ray diffraction method using a mixed crystal of dinactin and monactin (7:3). The conformation of the 32-membered ring looks a deformed cradle with an asymmetric shape, and can approximately be described as a hybrid of the nonactin and tetranactin type conformations. Dinactin type conformer has the lowest conformation energy among the three.
STRUCTURE AND ABSOLUTE CONFIGURATION OF TRANS(O)-N,N′-ETHYLENEBIS-(S-METHYL-l-CYSTEINATO)COBALT(III) PERCHLORATE
Authors: Isago Takashi , Okamoto Ken-ichi , Ohmasa Masaaki , Hidaka Jinsai 
Published: July 2006

Abstract
The crystal structure of trans(O)-N,N′-ethylenebis(S-methyl-l-cysteinato)cobalt(III) perchlorate was determined by X-ray diffraction study. The structure consists of two kinds of complex cations with asymmetric sulfur atoms of different absolute configuration (S(S)S(S) and R(S)S(S)). The differences between the configurations of the sulfur atoms in crystal and those in solution are discussed.
A NEW METHOD FOR DETERMINATION OF DISSOCIATION CONSTANTS OF SIMPLE ORGANIC ACIDS BY ISOTACHOPHORESIS
Authors: Kiso Yoshiyuki , Hirokawa Takeshi 
Published: July 2006

Abstract
Dissociation constants of formic, acetic, butyric, caproic, succinic, and glutaric acids were obtained together with absolute mobilities by means of isotachophoresis. It was found that the obtained values agreed satisfactorily with those in literature and the present method was very useful for the mixed samples.
ACID-BASE PROPERTIES OF ALKALI PROMOTED CHROMIA-ALUMINA CATALYSTS
Authors: Damon Jean P , Scokart Paul O 
Published: July 2006

Abstract
Infrared study of pyridine and pyrrole adsorption and catalytic activity measurements have shown that alkali promotors eliminate the Lewis acidity, increase the strength of the surface basic sites and increase the dehydrogenation/dehydration activity ratio of Cr2O3–Al2O3 catalysts in the following sequence: Li,Na,K,Rb,Cs. Dissolution experiments indicate that these effects originate from the formation of a superficial chromate phase.
ION-PAIR EXTRACTION-TITRATION OF INORGANIC IONS WITH ONE PHASE END-POINT CHANGE SYSTEM. DETERMINATION OF COPPER AND PERCHLORATE ION
Authors: Tsubouchi Masahiro , Yamamoto Yuroku 
Published: July 2006

Abstract
A new titration method is proposed for the determination of inorganic ions such as copper(I) and perchlorate ion. It is based on the solvent extraction-titration with the change of indicator in only one phase without movement of the indicator from one phase to the other. Tetrabromophenolphthalein ethyl ester and 2,6-dichlorophenolindophenol are used as the indicator.
A NOVEL SYNTHESIS OF VICINALLY N,S-DISUBSTITUTED OLEFINS FROM LITHIO SULFENYLTRIMETHYLSILYLMETHANE AND AMIDE
Authors: Agawa Toshio , Ishikawa Minori , Komatsu Mitsuo , Ohshiro Yoshiki 
Published: July 2006

Abstract
Vicinally N,S-disubstituted olefins are synthesized in good yields from amides by treating with lithio sulfenyltrimethylsilylmethanes.
PATERNO–BÜCHI REACTION OF ACID ANHYDRIDE OXETANES FROM GLUTARIC ANHYDRIDE
Authors: Maruyama Kazuhiro , Ogawa Takuji , Kubo Yasuo 
Published: July 2006

Abstract
Glutaric anhydride underwent the Paterno–Büchi reaction with olefins and gave oxetanes in good yields. The quantum yield was 0.16. Acetic anhydride didn’t undergo this reaction contrarily.
SYNTHETIC STUDIES ON TROPONIN I ACTIVE SITE. PREPARATION OF A PENTADECAPEPTIDE WITH INHIBITORY ACTIVITY TOWARD ACTOMYOSIN ADENOSINE TRIPHOSPHATASE
Authors: Nozaki Sukekatsu , Kobayashi Keiko , Katayama Eisaku , Muramatsu Ichiro 
Published: July 2006

Abstract
Three peptides corresponding to the partial sequences of troponin I (positions at 101 – 109, 110 – 115, and 101 – 115) were synthesized in a combination of the ‘hold-in-solution’ method and the usual liquid phase method. The synthesized pentadecapeptide inhibits actomyosin ATPase in an about 30% activity of the intact troponin I on a molar basis.
MICHAEL ADDITIONS CATALYZED BY NICKEL(II) OR COBALT(II)ACETATE-2,2′-BIPYRIDINE COMPLEXES
Authors: Irie Kazuo , Miyazu Ken-ichi , Watanabe Ken-ichi 
Published: July 2006

Abstract
In the presence of nickel(II) or cobalt(II)acetate-2,2′-bipyridine complexes, α,β-unsaturated ketones, methyl acrylate, and acrylonitrile were found to react with nitromethane, malononitrile, and aniline at room temperature under neutral condition to afford addition products in good yields.
PHOTOCHEMICAL CYCLIZATION OF ACRYLIMIDE DERIVATIVES
Authors: Maruyama Kazuhiro , Ishitoku Takeshi 
Published: July 2006

Abstract
Upon irradiation N-methylmethacrylimide (1a) cyclized to give cis-1,3,5-trimethyl-3-azabicyclo[3.2.0]heptane-2,4-dione (2a) in a yield of 66%. 2a gave 1,2-dimethylcyclobutane-cis-1,2-dicarboxylic acid by alkaline hydrolysis. Several other acrylimide derivatives were found to give similar results upon irradiation.
SYNTHESIS AND PROPERTIES OF [3.3](2,5)FURANO(2,5)THIOPHENOPHANE AND [3.3](2,5)THIOPHENOPHANE
Authors: Miyahara Yuji , Inazu Takahiko , Yoshino Tamotsu 
Published: July 2006

Abstract
The title compounds have been synthesized via a route involving cyclization of 4,4′-(2,5-furandiyl)bis(1-bromo-2-butanone) with sodium sulfide followed by condensation with glyoxal to give 1,11-dioxo[3.3](2,5)furano(2,5)thiophenophane, a new intramolecular CT complex. A solution of [3.3](2,5)thiophenophane contains anti and syn conformers in a ratio of ca. 20:1 as shown by a VT-NMR study.
A NOVEL SYNTHESIS OF A CYCLOPENTANE RING FROM HOMOPYRONE DERIVATIVES
Authors: Yamaoka Hiroshi , Mishima Ikuhiro , Hanafusa Terukiyo 
Published: July 2006

Abstract
2-Acylcyclopent-3-en-1-ol derivatives, 2, were synthesized by the reaction of homopyrones with phenyllithium. The intermediate may be a cyclopropylmethanol derivative, 3, which was isomerized into 2. Similar treatment with methyllithium, methylmagnesium iodide, or lithium aluminium hydride also gave 2.
REACTION OF TRIALKYLBORANE WITH 1-ALKYNE AND LEAD(IV) ACETATE. A NEW REGIOSPECIFIC AND STEREOSPECIFIC ONE-POT SYNTHESIS OF ENOL ACETATES
Authors: Masuda Yuzuru , Hoshi Masayuki , Arase Akira 
Published: July 2006

Abstract
In the reaction of trialkylborane with 1-alkyne and lead(IV) acetate in hexane, one of the alkyl groups of trialkylborane migrated to the terminal carbon atom of the triple bond, giving regiospecifically an internal enol acetate and an internal alkyne as the main reaction products. The former compound had (Z)-configuration.
THE TRANSITION METAL-CATALYZED N-ALKYLATION AND N-HETEROCYCLIZATION. A REDUCTIVE TRANSFORMATION OF NITROBENZENE INTO N,N-DIALKYLANILINE AND 2,3-SUBSTITUTED QUINOLINE USING ALDEHYDE AND CARBON MONOXIDE
Authors: Watanabe Yoshihisa , Suzuki Naoki , Shim Sang Chul , Yamamoto Michihiro , Mitsudo Take-aki , Takegami Yoshinobu 
Published: July 2006

Abstract
The catalytic N-alkylation and N-heterocyclization of nitrobenzene occurs at 180°C under pressures of carbon monoxide(70 atm) in the presence of aldehyde and transition metal complexes to give 2,3-dialkyl quinoline and N,N-dialkylaniline in good yields. The product selectivity highly depends on the catalysts.
MICROWAVE SPECTRA OF METHYLSILYLSULFIDE
Authors: Shiki Yoshiko , Ohta Tomoyuki , Nakagawa Jun , Hayashi Michiro 
Published: July 2006

Abstract
Microwave spectra of methylsilylsulfide and its deuterated species were measured. A plausible structure was estimated from the observed rotational constants. Dipole moments were determined by Stark effect measurements of the two species. From the observed A–E splittings of the spectra, the barrier to methyl internal rotation was determined.