bluuebunny/crossref_metadata_2025_split huggingface dataset:
SELECTIVE REACTIONS OF THIOLATE ANIONS WITH 4-HYDROXY-E-2-ALKENOIC ESTERS OR 4-METHANESULFONYLOXY-E-2-ALKENOIC ESTERS. SYNTHESIS OF 2-ALKEN-4-OLIDES (Δα,β-BUTENOLIDES) AND E,E-2,4-ALKADIENOIC ESTERS
Authors: Tanikaga Rikuhei , Nozaki Yoshihito , Tanaka Kazuhiko , Kaji Aritsune 
Published: July 2006

Abstract
Methyl 4-hydroxy-E-2-alkenoates prepared from aldehydes in one step, undergo the Michael reactions with thiolate anions to give 4-alkanolide derivatives, which are converted into 2-alken-4-olides. Methyl 4-methanesulfonyloxy-E-2-alkenoates undergo the substitution reactions, and subsequent treatments give methyl E,E-2,4-alkadienoates.
SYNTHESIS OF TRISUBSTITUTED 4H-1,2,4-OXADIAZINES
Authors: Zen Shonosuke , Harada Kazuho 
Published: July 2006

Abstract
The derivatives of 4H-1,2,4-oxadiazine, a new class of six-membered heterocycles, were synthesized through the reactions of β-diketones with aliphatic nitro compounds and acetyl chloride, and also of azirines with nitrile oxides. A reaction mechanism is proposed.
PERMEABILITY OF LARGE POLYAMIDE MICROCAPSULE COATED WITH SYNTHETIC BILAYER MEMBRANE
Authors: Okahata Yoshio , Hachiya Satoshi , Nakamura Gen-ichi 
Published: July 2006

Abstract
Polyamide ultrathin capsules coated with the bilayer membrane of dialkyl amphiphiles were prepared. Permeation of NaCl from the inner aqueous phase of the coated capsules was reduced 30–50 times relative to that of the uncoated semipermeable capsule, and drastically changed near the phase transition temperature of the coating bilayer membrane.
SYNTHESIS OF A COMMON STRUCTURAL UNIT OF THE ANTIBIOTIC OLIGOSTATINS
Authors: Ogawa Seiichiro , Iwasawa Yoshikazu , Toyokuni Tatsushi , Suami Tetsuo 
Published: July 2006

Abstract
Methyl N-[(1S)-(1,2,4/3,5,6)-2,3,4,6-tetrahydroxy-5-(hydroxymethyl)cyclohexyl]-4-amino-4,6-dideoxy-α-d-glucopyranoside, a common structural unit of the antibiotic oligostatins, has been synthesized and characterized as the heptaacetate.
SELECTIVE N-MONOALKYLATION OF ANILINE OVER ALKALI CATION EXCHANGED X AND Y TYPE ZEOLITES
Authors: Onaka Makoto , Ishikawa Koji , Izumi Yusuke 
Published: July 2006

Abstract
Potassium cation exchanged X and Y type zeolites are found to work as efficient bases in N-alkylation of aniline with an alkylating reagent in benzene. The intrinsic pore structures of X and Y zeolites are responsible for the high selectivity in N-monoalkylation of aniline.
CARBON–CARBON BOND FORMING REACTION ASSISTED BY SILICON TRANSFER. THE REACTION BETWEEN NITRONES AND KETENE SILYL ACETALS
Authors: Tomoda Shuji , Takeuchi Yoshito , Nomura Yujiro 
Published: July 2006

Abstract
Nitrones reacted with ketene silyl acetals at room temperature to afford β-siloxyamino esters in high yields. The stereochemistry of the products was assigned on the basis of NMR spectral data. A mechanism involving initial silicon transfer from ketene silyl acetals to nitrones has been proposed.
PREPARATION OF N-THIOAMIDO-β-LACTAM AND 2-THIOHEXAHYDROPYRIMIDIN-4-ONE DERIVATIVES FROM N-MONOSUBSTITUTED THIOUREAS AND β-HALOACYL HALIDES
Authors: Okawara Tadashi , Nakayama Kentaro , Furukawa Mitsuru 
Published: July 2006

Abstract
The reactions of N-monosubstitued thioureas (1) with β-haloacyl halides (2) were carried out in 5% NaOH–CH2Cl2 in the presence of a phase transfer catalyst to afford N-thioamido-β-lactams (3 and 5), thioureido acids (4), and 5-hydroxy-2-thiohexahydropyrimidin-4-ones (6). The compounds, 3 and 4, were readily converted to 5,5-dimethyl-2-thiohexahydropyrimidin-4-ones (7) with 6N HC1.
A SHORT-STEP SYNTHESIS OF (±)-PYRENOPHORIN UTILIZING 3-ALKENOATE AS A MASKED SYNTHON OF 4-OXO-2-ALKENOATE
Authors: Fujisawa Tamotsu , Takeuchi Masashi , Sato Toshio 
Published: July 2006

Abstract
The use of 3-alkenoate as a masked synthon of 4-oxo-2-alkenoate was established by a three step conversion of 3-nonenoate into 4-oxo-2-nonenoate through epoxidation, isomerization to an allyl silyl ether, and oxidation in a high overall yield. This method was applied to the short step synthesis of pyrenophorin from 7-oxo-3-octenoic acid.
SELECTIVE HYDRATION OF ACRYLONITRILE ON METAL OXIDE CATALYSTS
Authors: Miura Hiroshi , Sugiyama Kazuo , Kawakami Soichiro , Aoyama Toshiyuki , Matsuda Tsuneo 
Published: July 2006

Abstract
The selective hydration of acrylonitrile to form acrylamide has been studied on several metal oxide catalysts. MnO2, CuO and Co3O4 catalysts were found to be active and selective. Catalytic activities were strongly affected by the method of preparation. Hydration activity of MnO2 was related to the amount of phenol adsorption.
FLUORESCENT CROWN ETHER REAGENT FOR ALKALI AND ALKALINE EARTH METAL IONS
Authors: Nishida Hiroshi , Katayama Yoshiki , Katsuki Hideto , Nakamura Hiroshi , Takagi Makoto , Ueno Keihei 
Published: July 2006

Abstract
N-(4-methylumbelliferone-8-methylene)-monoaza-15-crown-5 (1) and -18-crown-6 (2) extracted most efficiently lithium and potassium, respectively, from aqueous solution to 1,2-dichloroethane. The similar fluorescent crown ether derived from diaza-18-crown-6 (3) was selective to calcium. The fluorimetric determination of lithium and calcium was feasible by using 1 and 3, respectively.
SYNTHETIC APPROACH TOWARD MITOMYCINS. EFFICIENT SYNTHESIS OF MITOSANE PRECURSORS FROM (2,4-PENTADIENYL)-p-QUINONES
Authors: Naruta Yoshinori , Arita Yoshihiro , Nagai Naoshi , Uno Hidemitsu , Maruyama Kazuhiro 
Published: July 2006

Abstract
Introduction of 2,4-pentadienyl side chain to halogenated p-quinones is performed with (2,4-pentadienyl)trimethylstannane to afford 2-halo-3-(2,4-pentadienyl)-1,4-quinones. Pyrolytic decomposition of the corresponding azidoquinones derived from the obtained haloquinones affords 3H-pyrrolo[1,2-a]indol-5,8-dione derivatives in good yields.
PHOTOREDUCTION OF CYTOCHROME C3 AND HYDROGEN EVOLUTION WITH HYDROGENASE
Authors: Okura Ichiro , Takeuchi Makoto , Kusunoki Shin , Aono Shigetoshi 
Published: July 2006

Abstract
The formation of the reduced form of cytochrome c3 was established when an aqueous solution containing Zn-TPPS3, cytochrome c3 and triethanolamine was irradiated by visible light. When hydrogenase was added to the system hydrogen evolution was observed by the irradiation of sunlight.
ASYMMETRIC INDUCTION IN THE [2,3] SIGMATROPIC REARRANGEMENT VIA SULFUR YLIDES DERIVED FROM CHIRAL KETENIMINES
Authors: Hiroi Kunio , Sato Shuko 
Published: July 2006

Abstract
The asymmetric [2,3] sigmatropic rearrangement of 2-alkylamino-3-phenyl-2-pentenylmethylsulfonium methylide (4) was accomplished by reaction of ethylphenylketenimines 2, having chiral carbons next to the nitrogen atoms, with trimethylsulfonium ylide (3) and acidic hydrolysis of the imines 5 obtained led to optically active 3-methylthiomethyl-3-phenyl-2-pentanone (6). The reaction of ethylphenylketene (−)-menthylimine (2f) with 3 at −78 °C resulted in the highest optical yield (55.6%) of (R)-(−)-6 in the same sequence.
ENANTIOSELECTIVE ESTER HYDROLYSIS CATALYZED BY A MICELLAR MODEL OF ZINC ENZYMES
Authors: Ogino Kenji , Tomita Isamu , Machiya Koji , Tagaki Waichiro 
Published: July 2006

Abstract
N-Laurylimidazoles containing l-2-pyrrolidinemethanol function gave large rate enhancements [kobsda(L)/kobsdo(L)=56–401] and reasonable enantioselectivities[kobsda(L)/kobsda(D)=1.40–3.92] in the presence of zinc ion and CTABr micelle for the hydrolysis of p-nitrophenyl l-and d-N-benzyloxycarbonylphenylalanates.
N,N,N′,N′-TETRAMETHYLCHLOROFORMAMIDINIUM CHLORIDE AS AN EFFICIENT CONDENSATION REAGENT FOR A NOVEL ESTERIFICATION APPLICABLE TO THE MACROLIDE SYNTHESIS
Authors: Fujisawa Tamotsu , Mori Toshiki , Fukumoto Kazumasa , Sato Toshio 
Published: July 2006

Abstract
N,N,N′,N′-Tetramethylchloroformamidinium chloride, prepared easily from N,N,N′,N′-tetramethylurea and oxalyl chloride, is found to be an efficient condensation reagent for an esterification of carboxylic acids with alcohols under mild conditions in one-pot procedure, and the reagent is applied to the lactonization for macrolide synthesis from ω-hydroxycarboxylic acids.
TETRAHEMOPROTEIN, CYTOCHROME c3 AS AN ORGANIC CONDUCTIVE MATERIAL
Authors: Ichimura Kenji , Kimura Keisaku , Nakahara Yusuke , Yagl Tatsuhiko , Inokuchi Hiroo 
Published: July 2006

Abstract
The electrical conductivity of a cytochrome c3 anhydrous film was measured in the region between 269 and 300 K under high-pressure hydrogen at 1000 kPa. The minimum value of the electrical resistivity of cytochrome c3 reached to the order of 1×10−3 Ωcm at 292 K.
STANNOUS TRIFLATE MEDIATED ALDOL REACTION OF 3-ACYLTHIAZOLIDINE-2-THIONE: A CONVENIENT METHOD FOR THE STEREOSELECTIVE SYNTHESES OF β-HYDROXY ALDEHYDE AND β-HYDROXY CARBOXYLIC ACID DERIVATIVES
Authors: Mukaiyama Teruaki , Iwasawa Nobuharu 
Published: July 2006

Abstract
Divalent tin enolates, formed from stannous triflate and 3-acylthiazolidine-2-thiones, react with aldehydes to afford the corresponding aldol products in high yields with high erythroselectivities. The adducts are easily transformed into β-hydroxy aldehyde and β-hydroxy carboxylic acid derivatives.
ION TRANSPORT ABILITY AND SELECTIVITY RELATING TO THE STRUCTURE OF SYNTHETIC IONOPHORES
Authors: Kuboniwa Hitoshi , Yamaguchi Kazuo , Hirao Akira , Nakahama Seiichi , Yamazaki Noboru 
Published: July 2006

Abstract
o-,m-,p-Substituted benzoic acids (1, 2, 3) with polyether chain bearing hydroxy group at the end and the methylether of 1 (4) were prepared. With active transport of Na+ and K+ by 1∼4, 1 and 4 exhibited K+-selectivity over Na+, while 2, and 3 had no transport ability. From the results of ion transport and 1H-NMR study, relationship between the structure and transport ability was discussed.
OBSERVATION OF LANTHANOID-INDUCED Pt-195 SHIFTS FOR THE ADDUCT OF BIS(ACETYLACETONATO)Pt(II) WITH TRIS(8,8,8,7,7,6,6-HEPTAFLUORO-2,2-DIMETHYLOCTANE-3,5-DIONATO)Pr(III) IN CDCl3 SOLUTION
Authors: Hirayama Masatoshi , Sasaki Yuko 
Published: July 2006

Abstract
The lanthanoid-induced 195Pt shifts were observed on the successive addition of Pr(fod)3 (L) to a 0.46 mol·dm−3 CDCl3, solution of Pt(acac)2(S) at an ambient probe temperature (25°C). The equilibrium constant and 195Pt intrinsic shift were estimated with the least squares fits of data to a plausible equilibrium between S and its 1:1 adduct with L formed via bidentate interaction.
OPTICAL RESOLUTION OF COBALT(III) COMPLEXES via CYCLODEXTRIN INCLUSION COMPOUNDS
Authors: Yamanari Kazuaki , Shimura Yoichi 
Published: July 2006

Abstract
Tris(chelate)cobalt(III) complexes with a long alkyl or bromoalkyl chain, [Co (en)2 (NH2CH2CH2SR)]3+ (R=(CH2)nBr and (CH2)nCH3), were partially resolved by stereoselective inclusion of the free side-chain into α- or β-cyclodextrin(CDX). α- and β-CDX preferentially include the Δ- and Λ-complexes, respectively.
NEW [2.2]ORTHOCYCLOPHANES AND [2.2]METACYCLOPHANE HAVING SILICON- SILICON BONDS AS BRIDGING UNITS
Authors: Sakurai Hideki , Nakadaira Yasuhiro , Hosomi Akira , Eriyama Yuichi 
Published: July 2006

Abstract
Four new [2.2]cyclophanes having two silicon-silicon bridges were prepared by the Diels-Alder reaction of 3,3,4,4,7,7,8,8-octamethyl-3,4,7,8-tetrasilacycloocta-1,5-diyne. These novel cyclophanes and two other related compounds are characterized by various spectra.
THE MECHANISM OF ASYMMETRIC TRANSFORMATION OF 2-SUBSTITUTED ALKANOIC ACIDS VIA CHIRAL OXAZOLINES
Authors: Shibata Saizo , Matsushita Hajime , Kaneko Hajime , Noguchi Masao , Saburi Masahiko , Yoshikawa Sadao 
Published: July 2006

Abstract
The mechanism of asymmetric transformation of 2-substituted alkanoic acids via chiral oxazolines was examined using two epimers of (4S)-2-(1-phenylethyl)-4-benzyloxazoline. The transformation in THF was elucidated to be governed by kinetic control, and its process was clarified by measuring the ratio of 13C-labeled lithio oxazolines by 13C NMR.
A SIMPLE CONVERSION OF N,N-DIMETHYL-2-ALKENYLAMINE TO 2-ALKENAL
Authors: Takabe Kunihiko , Yamada Takashi , Katagiri Takao 
Published: July 2006

Abstract
Treatment of N,N-dimethyl-2-alkenylamine with 30% H2O2 followed by acetic anhydride affords 2-alkenal (α,β-unsaturated aldehyde) in good isolated yield.
THE STRUCTURE OF BIS(DIBENZYLAMINE)BIS(ETHYLTHIOACETATO)COPPER(II) –SQUARE-PLANAR COPPER(II) COMPLEX
Authors: Sato Yoshiyuki , Ouchi Akira 
Published: July 2006

Abstract
The crystal and molecular structure of the title complex has been determined by the X-ray diffraction. The copper(II) atom is in a square-planar geometry, being coordinated with two nitrogen and two oxygen atoms. No atoms other than the phenyl group ones of the ligand exist in the axial direction of the CuN2O2 plane.
ION EXCLUSION CHROMATOGRAPHIC DETERMINATION OF WEAK ACIDS USING A CARBONIC ACID SOLUTION AS ELUENT
Authors: Itoh Hisaaki , Shinbori Yoshio 
Published: July 2006

Abstract
By using a carbonic acid solution as eluent which permits conductivity detection of ionic species without a suppressor as a postcolumn reactor, ion exclusion chromatographic determination of some organic acids was carried out sensitively by means of the conductivity detector.
MAGIC-ANGLE-SPINNING 29Si-NMR STUDY OF THE STRUCTURE OF ZSM-5 AND ZSM-11 ZEOLITES
Authors: Nagy J B , Gabelica Z , Derouane E G , Jacobs P A 
Published: July 2006

Abstract
Eight magnetically different 29Si-NMR lines are clearly distinguished in the solid state high resolution spectra of HZSM-5 zeolite with a high Si/Al ratio (1000) and some of them are assigned. The resonance line at −105 ppm in both HZSM-5 and HZSM-11 zeolites is attributed to Si atoms in the second coordination sphere of an Al atom, i.e. Si (1 Al). The −115 ppm lines stem from Si atoms in 4-membered rings. The splitting of these lines originates from a probable strain in these small rings. The incorporation of Al atom occurs exclusively in the 5-membered rings.
SYNTHESIS OF PERFLUORINATED 1,3-DITHIOLES FROM FLUOROOLEFINS
Authors: Burton Donald J , Inouye Yoshio 
Published: July 2006

Abstract
In contrast to the formation of 2,2,4,4-tetrakis(trifluoromethyl)-1,3-dithietane from hexafluoropropene, potassium fluoride, and sulfur, perfluoro-2-butene and perfluoro-pentenes react with potassium fluoride and sulfur to form perfluoro-1,3-dithioles via intermediate thioenolate anions.
A NOVEL INTRAMOLECULAR ADDITION OF PHOTOCHEMICALLY OR THERMALLY GENERATED KETENE TO A [4π+2σ] ELECTRONIC SYSTEM
Authors: Nitta Makoto , Omata Akihiko , Namiki Masamichi 
Published: July 2006

Abstract
The photochemical or thermal reaction of exo-6-methoxy-1,5,6-trimethyl- or exo-6-methoxy-1,3,5,6-tetramethyltricyclo[3.2.1.02,7]oct-3-en-8-one resulted in the novel formation of rapidly equilibrating valence isomers of norcaradiene-cycloheptatriene derivative via a ketene intermediate.
INFRARED SPECTRA AND VIBRATION-ROTATION ANALYSES OF THE ν1 AND ν5 BANDS OF SILANE-d3
Authors: Ohno Keiichi , Matsuura Hiroatsu , Murata Hiromu 
Published: July 2006

Abstract
Infrared spectra of the ν1 and ν5 bands of gaseous silane-d3 were measured by a Fourier transform spectrometer. The analysis of the ν1 band gave the ground-state constants for 28SiHD3: B0=1.777388±0.000075 cm−1, (DJ)0=(1.5895±0.0090)×10−5 cm−1, and (DJK)0=−(1.136±0.057)×10−5 cm−1. The spectroscopic constants for the v1=1 and the v5=1 states were also determined.
LOWERING OF THE ROTATIONAL BARRIER ON INTRODUCTION OF A FLUORO GROUP INTO 1-POSITION OF 9-(1-NAPHTHYL)FLUORENE SYSTEMS
Authors: Murata Shigeru , Mori Teruo , Oki Michinori 
Published: July 2006

Abstract
Rotational barriers in 1-fluoro-9-(1-naphthyl)fluorene and 1-fluoro-(2-methyl-1-naphthyl)fluorene were found to be lower by ca. 0.5 kcal/mol than those of their parent hydrocarbons. The results are attributed to raising of the ground state energy due to introduction of the fluoro group.
HASHISH:1 SYNTHESIS OF A NOVEL Δ9-TETRAHYDROCANNABINOL (THC) ANALOG
Authors: Jorapur Vaman S , Khalil Zarif H , Duffley Richard P , Razdan Raj K , Hagi-Bakar Mohd Rouyon B , Bhacca Norman S 
Published: July 2006

Abstract
Treatment of cannabinoid diacetate (2b) with N-bromosuccinimide gave the brominated product 2c in excellent yield, which with base formed a novel cannabinoid 3b. The structure was confirmed by 13C n.m.r. and 1H n.m.r. nuclear Overhauser enhancement spectral studies.
MECHANISM OF UNCOUPLER-MEDIATED CATION TRANSPORT AND CORRELATION BETWEEN THE IONOPHORIC ACTIVITY OF UNCOUPLER AND ITS UNCOUPLING ACTIVITY
Authors: Ueno Masaharu , Yasui Tomomi , Horikoshi Isamu 
Published: July 2006

Abstract
Uncoupler-mediated cation transport across liposomal membrane was studied. The pH dependencies of cation leaks were different between counter ions. The mechanism was proposed and ion selectivity was discussed. The correlation between the ionophoric activity of the uncoupler and its uncoupling activity was also shown.
STRUCTURE OF THE METAL SCHIFF BASE COMPLEX OF PYRIDOXAL AND HISTIDINE IN SOLUTION
Authors: Kondo Hiroki , Yoshinaga Hiroyuki , Morita Kanzi , Sunamoto Junzo 
Published: July 2006

Abstract
The cyclization of pyridoxal Schiff base of histidine or histamine is prohibited by metal ions such as Cu2+ and Zn2+. On the basis of a similar extent of metal inhibition for histidine and histamine, it is concluded that an identical Schiff base complex with the imidazole group coordinating to the metal is responsible for the inertness of both substrates.
FORMATION OF CYCLOPROPANE DERIVATIVES IN THE BLAISE REARRANGEMENT
Authors: Abe Yukio , Suehiro Tadashi 
Published: July 2006

Abstract
On heating tosylates of ethyl 2-alkyl-2-methyl-3-hydroxy-3-phenylpropanoate (R=Me, 1b; R=Et, 6) in o-dichlorobenzene at 170 °C, ethyl 1-methyl-2-phenyl- and 1,2-dimethyl-3-phenylcyclopropanecarboxylates, 3, and 8, were formed in both 5% yield, respectively, whereas the alkyl migration products, ethyl 3-alkyl-2-methyl-3-phenylpropenoates, were not produced. The mode of the reaction of the methyl group with the cationic carbon was described.
ALKYL–PHENYL INTERACTION IN ENANTIOMER DIFFERENTIATING ACYLATION
Authors: Hiraki Yuji , Tai Akira 
Published: July 2006

Abstract
The enantiomer-differentiating acylation (kinetic resolution) of α-substituted benzylamine with (S)-2-phenylbutyric acid anhydride was carried out in organic and aqueous media. (R)-Amines reacted in excess in organic media, while (S)-amines reacted in large excess in aqueous media. These differences in the chiral recognition were interpreted based on the idea that the attractive interaction took place between phenyl and alkyl groups in aqueous media.
SYNTHESIS OF γ-KETOPIMELIC ACID DERIVATIVES BY RHODIUM CARBONYL-CATALYZED HYDROCARBONYLATION OF ACRYLIC ACID DERIVATIVES
Authors: Hong Pangbu , Mise Takaya , Yamazaki Hiroshi 
Published: July 2006

Abstract
The rhodium carbonyl-catalyzed reactions of acrylic acid derivatives (1) with CO in iso-propanol gave selectively γ-ketopimelic acid derivatives (2) in good yields. In the reaction of ethyl acrylate (1b) in iso-propanol-d8, deuterium scrambling in the methylene groups of the product (2b) was observed.
PREPARATION OF (2E)-t-BUTYL 4,5,7-TRIHYDROXY-2-OCTENOATES CONTAINING THREE NON-RACEMIC CHIRAL CENTERS
Authors: Mitsunobu Oyo , Ebina Masahiko , Ogihara Tsuyoshi 
Published: July 2006

Abstract
The hydrophilic part of 14-membered-ring macrolide, colletodiol, containing three chiral centers has been prepared from l-rhamnose and d-glucose, suitable for further synthesis.
RHODIUM CARBONYL-CATALYZED CROSS-HYDROCARBONYLATION OF ACETYLENES AND ETHYLENE. SYNTHESIS OF α,β-UNSATURATED KETONES
Authors: Mise Takaya , Hong Pangbu , Yamazaki Hiroshi 
Published: July 2006

Abstract
The cross-hydrocarbonylation of acetylenes and ethylene with CO and H2 in the presence of Rh4(CO)12 gave α,β-unsaturated ethyl ketones regio- and stereoselectively.
SYNTHESIS AND MAGNETIC PROPERTY OF EUROPIUM(II) HALOBORATES, Eu2BO3X (X=Cl and Br)
Authors: Machida Ken-ichi , Adachi Gin-ya , Shiokawa Jiro 
Published: July 2006

Abstract
New europium(II) haloborates, Eu2BO3X (X=Cl and Br), were prepared by solid state reactions of Eu3(BO3)2 and EuCl2 or EuBr2′ and were found to be ferromagnets with 4.2&lt;TC&lt;5 K. The hexagonal-prismlike single crystals, which have been grown from the molten samples containing a large excess of EuX2 as a flux, crystallize in the hexagonal system (space group: P63mc).
SPECTROSCOPIC STUDIES ON THE SYNTHETIC MAGNESIUM PORPHYRINS IN THE VESICLES AS TRANS-MEMBRANE ELECTRON TRANSPORT SENSITIZERS
Authors: Katagi Toshiyuki , Yamamura Takeshi , Saito Taro , Sasaki Yukiyoshi 
Published: July 2006

Abstract
Synthetic magnesium porphyrins, Mg-P3+ and Mg-P were solubilized into DPPC vesicles and the trans-membrane electron transport from EDTA·2Na to MV2+ was studied in the concentration range where the porphyrins did not aggregate. Mg-P3+ was found to photo-catalyze the reaction about 30 times as efficiently as Mg-P.
DIELS–ALDER ADDUCTS FROM N-UNSUBSTITUTED TAUTOMERIC 2(1H)-PYRIDONE-2-HYDROXYPYRIDINES; 5,6-BENZO-2-AZABARRELENONES AND 5,6-BENZO-2-AZABARRELENES
Authors: Kuzuya Masayuki , Mano Ei-ichi , Adachi Michihiro , Noguchi Akihiro , Okuda Takachiyo 
Published: July 2006

Abstract
Diels–Alder reactions of several N-unsubstituted tautomeric 2(1H)-pyridone-2-hydroxypyridines with benzyne were examined and found to afford 5,6-benzo-2-azabarrelenones, which were converted to hitherto unknown 5,6-benzo-2-azabarrelenes.
COPPER BINDING SITE IN SERUM AMINE OXIDASE TREATED WITH SODIUM DIETHYLDITHIOCARBAMATE
Authors: Suzuki Shinnichiro , Sakurai Takeshi , Nakahara Akitsugu , Oda Osamu , Manabe Takashi , Okuyama Tsuneo 
Published: July 2006

Abstract
The structure of copper binding site in bovine serum amine oxidase (BSAO) treated with diethyldithiocarbamate ion(DDC) was discussed by comparing its absorption and electron spin resonance spectra with those of a model copper complex. The structure of the model complex, [Cu(2,2′-bipyridine)(DDC)]+, suggested that at least two nitrogen atoms are coordinated around the copper ion in the native BSAO. Some organic chromophore from which the pink color of BSAO stems was also observed as the difference of the absorption spectra in the region of 450 to 600 nm between BSAO-DDC and the model complex.
IN-BEAM ELECTRON IMPACT, CHEMICAL IONIZATION AND NEGATIVE ION CHEMICAL IONIZATION OF FLAVONOID GLYCOSIDES
Authors: Itokawa Hideji , Oshida Yoshiaki , Ikuta Akira , Shida Yasuo 
Published: July 2006

Abstract
There has been little information that the molecular weights of flavonoid glycosides were measured by conventional mass spectrometry. The application of other soft ionizations such as in-beam El, CI and NICI except for the FD was studied, and good spectra were given by the in-beam NICI method.
A VERY SIMPLE SYNTHESIS OF NATURAL SATURATED δ-SUBSTITUTED δ-LACTONES. THE PHEROMONE OF Vespa orientalis
Authors: Bacardit Ramón , Moreno-Mañas Marcial 
Published: July 2006

Abstract
Very facile syntheses of racemic massoia lactone and the pheromone of Vespa oriental is have been achieved starting from dehydroacetic acid.
REITERATIVE THIO-CLAISEN REARRANGEMENT USING A THIOLACTAM SUBSTRATE
Authors: Takano Seiichi , Hirama Michiyasu , Ogasawara Kunio 
Published: July 2006

Abstract
A thiolactamd(1) undergoes facile reiterative thio-Claisen rearrangement to give the α,α-disubstituted lactams with a variety of allyl groups.
OXIDIZING POWER AS THE PRIME FACTOR CONTROLLING THE CATALYTIC ACTIVITY OF H3PWxMo12−xO40 FOR OXIDATION OF METHACROLEIN
Authors: Misono Makoto , Komaya Takashi , Sekiguchi Hiroshi , Yoneda Yukio 
Published: July 2006

Abstract
Oxidation of acrolein, methacrolein, and isobutyric acid by 12-heteropoly acids of Mo and W (H3PWxMo12−xO40: x = 0,2,6,10,12) was carried out with a pulse method. By the comparison of the pulse and flow experiments, it was concluded that the prime factor controlling the catalytic activity was the oxidizing power of catalyst (or reducibility of catalyst).