bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Twisted and Partially Overlapping Porphyrin Dimer as a New Model of Special Pair in Photosynthetic Reaction Center
Authors: Osuka Atsuhiro , Maruyama Kazuhiro 
Published: July 2006

Abstract
A twisted and partially overlapping porphyrin dimer bridged by a 1,1′-spirobiindane spacer was synthesized. Its biszinc complex and bismagnesium complex showed a split Soret band, indicating the exciton interaction of the two porphyrin ring. Bismagnesium complex underwent reversible one-electron oxidation 40 mV more easily than the corresponding monomeric porphyrin.
New Method for the Synthesis of Podoblastin Derivatives and 3-Acyltetronic Acids
Authors: Kawakami Hiroshi , Hirokawa Shinya , Asaoka Morio , Takei Hisashi 
Published: July 2006

Abstract
A new and general method for the synthesis of podoblastin derivatives and 3-acyltetronic acids via isoxazoles is described. The key isoxazole intermediates were obtained by 1,3-dipolar cycloaddition reaction of acetylenecarboxylic acid derivatives to nitrile oxides. These isoxazoles were readily converted to the title compounds by hydrogenolysis followed by hydrolysis and cyclization.
Regioselective Synthesis of Terminal Olefins from Alkanes via Rhodium-Catalyzed C–H Activation
Authors: Sakakura Toshiyasu , Hayashi Teruyuki , Tanaka Masato 
Published: July 2006

Abstract
Pentane and decane were regioselectively transformed into 1-butene and 1-nonene with the simultaneous formation of acetaldehyde by photocatalysis in the presence of RhCl (CO)(PMe3)2 under carbon monoxide.
An EPR Study of a Model System for the Initial Oxygen Activation Process Caused by Adriamycin-Iron System
Authors: Tachibana Masahiko , Tero-Kubota Shozo , Iwaizumi Masamoto 
Published: July 2006

Abstract
1,4-Dihydroxyanthraquinone, a model compound for Adriamycin, is reduced by Fe2+-ADP complex to generate semiquinone, while by Fe2+-phosphate complex to hydroquinone. The difference is explained in terms of the higher redox potential of the latter reducing agent. Similar reduction reactions were observed in the case of the drug.
Highly Regioselective Addition of Allylstannanes to Vinyl Epoxides by Lewis Acid Mediation
Authors: Naruta Yoshinori , Maruyama Kazuhiro 
Published: July 2006

Abstract
In the presence of BF3·OEt2, reaction of allylstannanes with vinyl epoxides gives 1,2 or 1,4 addition products in good yield, depending on the substitution at the olefinic terminus. In either case regioselectivity is extremely high. The 1,2 adduct is applied to the elongation of a prenyl unit in polyprenyl compounds.
Giant Helical Superstructures Formed by Cationic Cholesterol-Containing Polymers
Authors: Cho Iwhan , Park Jae-Geun 
Published: July 2006

Abstract
Giant fibrous right-handed helical superstructures were formed in aqueous solution by a cholesterol-containing polymeric amphiphile, poly(CHODAMA-5). The ordered packing of tubular structures formed by vesicle-fusion mechanism is considered to be prerequisite for the formation of these giant superstructures. The vesicle-fusion was controlled by addition of Ca2+ and/or with aging time control at phase transition temperature.
Novel Photochemical Reactions of Dibenzodisilacyclohexadiene with Ketones
Authors: Sakurai Hideki , Sakamoto Kenkichi , Kira Mitsuo 
Published: July 2006

Abstract
Dibenzodisilacyclohexadiene reacts with ketones and formaldehyde, under photolytic conditions, to give a variety of products depending on the nature of the ketones used. A compound having 2-sila-3-oxabicyclo[3.2.2]nona-6,8-diene structure was isolated as a result of intramolecular trapping of a cyclohexadienyl radical.
Addition of Alcohol to Olefinic Bonds by Paired Electrosynthesis with Raney-Nickel Cathode
Authors: Yamada Tsukasa , Osa Tetsuo , Matsue Tomokazu 
Published: July 2006

Abstract
A one-pot addition reaction of an alcohol to an olefinic double bond was successfully performed by use of paired electrosynthesis with a Raney-nickel cathode.
Effect of Hydrophobic Group on the Structure of Langmuir–Blodgett Films of Amphiphilic Cyanine and Squarylium Dyes
Authors: Matsumoto Mutsuyoshi , Sekiguchi Tatsuo , Tanaka Hideaki , Tanaka Motoo , Nakamura Takayoshi , Tachibana Hiroaki , Manda Eiichiro , Kawabata Yasujiro 
Published: July 2006

Abstract
Phenylcyclohexyl group, a mesogenic unit, was introduced into the hydrophobic part of the amphiphilic cyanine and squarylium dyes. Surface pressure-area isotherms were explained in terms of the bulkiness and the stronger dispersion force of the mesogenic unit. In-plane anisotropy was observed for mixed LB films of the amphiphilic cyanine dye containing the mesogenic unit.
Novel Stationary Phases for Affinity Chromatography. Nucleobase-Selective Recognition of Nucleosides and Nucleotides on Poly(9-vinyladenine)-Supported Silica Gel
Authors: Akashi Mitsum , Yamaguchi Michiko , Miyata Hiroshi , Hayashi Mamiko , Yashima Eiji , Miyauchi Noriyuki 
Published: July 2006

Abstract
Poly(9-vinyladenine) (PVAd) was immobilized or coated on macroporous silica gel to be used as a stationary phase for HPLAC of nucleosides and nucleotides. The stationary phases showed nucleobase-selective recognition ability for nucleic acid constituents and gave practically useful HPLAC columns. On the basis of the results, the relationships between separation ability and the structure of PVAd are discussed.
Preparation of Highly Oriented Poly(p-phenylenevinylene) Thin Film by Using Langmuir–Blodgett Technique
Authors: Era Masanao , Shinozaki Hiroki , Tokito Shizuo , Tsutsui Tetsuo , Saito Shogo 
Published: July 2006

Abstract
Precursor polyelectrolyte of poly(p-phenylenevinylene) with bilayer-forming amphiphile as counterion forms a stable monolayer at the air–water interface. The monolayers could be transferred on substrates by Langmuir–Blodgett (LB) technique. A poly(p-phenylenevinylene) LB film could be obtained from heat treatment of the precursor LB film. Planar orientation of π-conjugated phenylenevinylene sequences was exhibited in the LB films.
Total Synthesis of (+)-Goniothalenol [(+)-Altholactone], a Novel Bioactive Tetrahydrofurano-2-pyrone
Authors: Tadano Kin-ichi , Ueno Yoshihide , Ogawa Seiichiro 
Published: July 2006

Abstract
A novel plant-origin tetrahydrofurano-2-pyrone, (+)-goniothalenol has been synthesized from l-arabinose. The central feature of the present synthesis is a silica-gel catalyzed intramolecular epoxy ring opening by hydroxyl group for construction of the tetrahydrofuran in the title compound.
A Short Step Synthesis of AV-toxin D
Authors: Kajimoto Tetsuya , Yahiro Kiyoshi , Nohara Toshihiro 
Published: July 2006

Abstract
AV-toxin D(1) is the most active phytotoxic component among AV-toxins isolated from the cultural medium of Acrospermum viticola which cause the zonate leave spot disease, and is the sole natural product having methoxy groups on phenoxazone skeleton. By using the nitrene annulation reaction, we succeeded in the short step synthesis of 1.
Sulfur Dioxide Gas Detection Using a Na2SO4–Y2(SO4)3–V2O5–SiO2 Solid Electrolyte
Authors: Imanaka Nobuhito , Kawai Kenji , Shiokawa Jiro , Adachi Gin-ya 
Published: July 2006

Abstract
The title solid electrolyte was examined for the SO2 detection. Vanadium pentoxide was mixed into the solid electrolyte for the purpose of replacement of Pt catalyst. The sulfate-based solid electrolyte contains Na2SO4–I phase which is effective for Na+ ionic conduction and shows 5–9 times as high conductivity as pure Na2SO4. By constructing an SO2 gas concentration cell with the use of NiSO4–NiO as a reference electrode, the electrolyte can detect the SO2 gas from 30ppm to 1% without the Pt catalyst.
Bulk Superconductivity in (BEDT-TTF)2[Cu(NCS)2]
Authors: Sugano Tadashi , Terui Kenji , Mino Shinji , Nozawa Kiyokazu , Urayama Hatsumi , Yamochi Hideki , Saito Gunzi , Kinoshita Minoru 
Published: July 2006

Abstract
The diamagnetic shielding is observed for an ambient-pressure organic superconductor (BEDT-TTF)2[Cu(NCS)2] by means of a.c. susceptibility measurements. The diamagnetic susceptibility amounts to 100 ± 5% of the perfect diamagnetism below 7 K and exhibits a sharp transition at 10.3 ± 0.4 K. The thermodynamical critical field is estimated and discussed in terms of the BCS theory.
Baker’s Yeast Reduction of 1,2-Diketones. Preparation of Pure (S)-(−)-2-Hydroxy-1-phenyl-1-propanone
Authors: Chênevert Robert , Thiboutot Sonia 
Published: July 2006

Abstract
1,2-Diketones are readily reduced by fermenting baker’s yeast but the reactions proceed with little selectivity. One notable exception is the reduction of 1-phenyl-1,2-propanedione which affords pure (S)-(−)-2-hydroxy-1-phenyl-1-propanone in good yield.
Structures of Metasequoic Acid A and B
Authors: Sakan Fujio , Iwashita Takashi , Hamanaka Nobuyuki 
Published: July 2006

Abstract
Two new antifungal diterpenes, metasequoic acid A(4) and B(5) were isolated from Metasequoia glyptostroboides Hu et Cheng. These compounds possess a new skeleton which contains a cyclopropane ring bridging C-3 and C-4 of the labdane framework. The structures 4 and 5 have been determined by spectroscopic methods.
Digital Simulation of Normal Pulse Polarographic Adsorption Waves of Methyl Viologen
Authors: Kobayashi Katsuyoshi 
Published: July 2006

Abstract
Digital simulations of the normal pulse polarographic adsorption waves of the nernstian redox species obeying the Frumkin type Flory–Huggins isotherm interpret the unusual electrochemical behavior of methyl viologen. An orientation change of the adsorbed reductant causes a marked positive shift of adsorption waves.
Thiuram Monosulfides as a Neutral Carrier for Copper(II)-Selective Membrane Electrode
Authors: Kamata Satsuo , Bhale Ajay , Uda Takaharu 
Published: July 2006

Abstract
Poly(vinyl chloride) membrane electrodes that are sensitive and selective to copper(II) ion were developed. The electrodes based on tetramethyl, tetraethyl and dipyrrolidine thiuram monosulfides as a neutral carrier, exhibit a Nernstian behavior to copper(II) ion in the activity range of 10−1 M to 10−6 M–10−8 M. Properties of the electrodes are briefly discussed.
Rheological Effect of Excess Polymer on Latex Suspension
Authors: Nashima Takeshi , Furusawa Kunio 
Published: July 2006

Abstract
Effects of free polymers (Hydroxy–Propyl–Cellulose (HPC)) on the flocculation/dispersion feature of latex dispersions stabilized sterically by the same HPC at its lower critical solution temperature(ca. 50 °C) have been investigated from a view point of rheology. The observed curves of relative viscosity of the system under a lower shear rate have a peak about the concentration of free HPC, which depends on the molecular weight of added HPC. These experimental results indicate that, after saturated adsorption, the free HPC molecules induce the dispersion to flocculate in spite of the dense adsorbing layer of HPC on the particles which would tend to give rise to a steric stabilization. This behaviour is interpreted to be a result of depletion effect.
Integration of Catalyst Activity Pattern (INCAP) Artificial Intelligence Approach in Catalyst Design
Authors: Hattori Tadashi , Kito Shigeharu , Murakami Yuichi 
Published: July 2006

Abstract
A novel knowledge representation scheme for the utilization of activity pattern was developed as a part of a prototype expert system for catalyst design. The result given by the system agreed well with published results, indicating the feasibility of the artificial intelligence approach in the design of catalysts.
A Remarkable Difference of the Positional Selectivity in Electrophilic Aromatic Substitution of Dibenzofuran between the Classical σ-Complex and Charge-Transfer Mechanisms
Authors: Keumi Takashi , Hamanaka Kozo , Hasegawa Haruo , Minamide Naoki , Inoue Yoshinori , Kitajima Hidehiko 
Published: July 2006

Abstract
Electrophilic nitration of dibenzofuran with nitric acid by a charge-transfer mechanism occurs exclusively at the 3-position and on the other hand, substitution at the 2-position predominates in the acylation, in which a classical σ-complex mechanism is important.
Control of the Stereoselectivity in the Synthesis of 1-Methyl-2,5-disubstituted Pyrrolidines by Mercury(II)-initiated Cyclization of Substituted Alk-4-enylamines
Authors: Tokuda Masao , Yamada Yasufumi , Suginome Hiroshi 
Published: July 2006

Abstract
The stereoselectivity in the synthesis of cis- and trans-1-methyl-2,5-disubstituted pyrrolidines by mercury(II)-initiated cyclization of substituted alk-4-enylamines can be controlled by choosing the appropriate mercury salt and solvent.
Polyion Complexation of Black Lipid Membranes (BLM) and Transport of a Hydrophobic Ion
Authors: Higashi Nobuyuki , Kunitake Toyoki , Möllerfeld J , Ringsdorf Helmut 
Published: July 2006

Abstract
Black lipid membranes were obtained from synthetic ammonium amphiphiles and their stabilities were enhanced by complexation with an anionic polymer. The permeation behavior of dipicrylamine anion was examined by the charge-pulse relaxation technique.
A Seleno-Pummerer Rearrangement of Haloselenuranes
Authors: Nakayama Juzo , Sugihara Yoshiaki 
Published: July 2006

Abstract
When heated or treated with triethylamine in tetrahydrofuran, diacetonyl- and diphenacylselenium dichlorides and their derivatives undergo seleno-Pummerer rearrangement to give the corresponding α-chloro selenides in good yields.
The First Preparation of Disilene via Reductive DehaIogenation of 1,2-DichIorodisi Iane. The Formation of an Unusual Air-Oxidation Product, 1-Oxa-2-si lacyclopent-3-ene Derivative
Authors: Watanabe Hamao , Takeuchi Ken , Nakajima Kenji , Nagai Yoichiro , Goto Midori 
Published: July 2006

Abstract
The most air-stable disilene, tetrakis(2,4,6-triisopropylphenyl)disilene, again was obtained by the reaction of 1,2-dichloro-1,1,2,2-tetrakis(2,4,6-triisopropylphenyl)disilene with lithium naphthalenide. The disilene afforded its air-oxidation product having 1-oxa-2-silacyclopent-3-ene framework which was determined by X-ray analysis.
Reactions of 2-(Tributylstannyl)-4,4-dimethyl-2-oxazoline with Organic Halides. Unusual Product from Aroyl Halide
Authors: Kosugi Masanori , Fukiage Akio , Takayanagi Mitsuhiro , Sano Hiroshi , Migita Toshihiko , Satoh Mitsuo 
Published: July 2006

Abstract
2-(Tributylstannyl)-4,4-dimethyl-2-oxazoline (1) reacted with aroyl chloride smoothly without any palladium catalyst to give the unusual product, bis(N-aroyl-4,4-dimethyl-2-oxazolinylidene) in good yields. The reaction of 1 with other types of halide needed a palladium catalyst, and gave the corresponding 2-substituted-4,4-dimethyl-2-oxazoline in good yields.
A Convenient Synthesis of Fluorobenzaldehydes by KF/Ph4PBr/18-Crown-6 Reagent System
Authors: Yoshida Yasuo , Kimura Yoshikazu 
Published: July 2006

Abstract
4-Fluorobenzaldehyde was easily synthesized from 4-chlorobenzaldehyde by potassium fluoride in the presence of tetraphenylphosphonium halide plus 18-crown-6 or poly(ethylene glycol) dimethyl ether. Several fluorobenzaldehyde derivatives were similarly prepared from the corresponding chloro-derivatives in good yields.
Synthesis and Spectroscopic Properties of Zn(II) Mono-2-(t-butyl)phthalocyanine
Authors: Konami Hideo , Hatano Masahiro 
Published: July 2006

Abstract
A simple method of synthesis which provides soluble mono-substituted phthalocyanine(Pc) complexes has been proposed. Concurrent measurements with non-, mono- and tetra-substituted Pc’s enabled to assign 1H NMR signals of ZnPc’s, and suggested complicated structure of so-called Soret(B) band in the UV-region of electronic spectra.
Scaled Particle Theory of Non-Spherical Molecules Extended for the Elucidation of the Entropy of Solution
Authors: Fujiwara Hideaki , Miyagi Rieko , Ohtaku Ikuji , Sasaki Yoshio 
Published: July 2006

Abstract
Scaled particle theory is extended to non-spherical molecules such as spherocylinders and disks in order to interpret the entropies of solution. Application of this treatment to normal alkanes from pentane to decane dissolved in 9-heptadecanone and in 10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-one has shown that the entropies measured can be interpreted almost fully by assigning realistic sizes for the solutes as well as for the solvents, supporting an important role of the cavity formation in the process of dissolution when viewed from the standpoint of entropies.
Reductive Elimination of sym-Diphenyltetramethyldisilane from cis-Bis(pheny1dimethylsilyl)bis(phosphine)platinum(II) Complexes
Authors: Kobayashi Toshi-aki , Hayashi Teruyuki , Yamashita Hiroshi , Tanaka Masato 
Published: July 2006

Abstract
Reductive elimination of cis-bis(phenyldimethylsilyl)bis(phosphine)platinum(II) complexes was found to occur to give sym-diphenyltetramethyldisilane together with redistribution by-products. Addition of free phosphine was favorable for the reductive elimination, and the disilane was formed in more than 80% yields.
Tracer Diffusion of Tris(1,10-phenanthroline)iron(II) Cation in Aqueous Sodium Dodecyl Sulfate Solutions. Strong Premicellar Interactions
Authors: Tominaga Toshihiro , Matsumoto Shigetoshi , Koshiba Takayuki , Yamamoto Yuroku 
Published: July 2006

Abstract
Tracer diffusion coefficient of Fe(phen)32+ (phen = 1,10-phenanthroline) has been determined in aqueous sodium dodecyl sulfate (NaDS) solutions at 298.2 K using Taylor dispersion technique. Below the critical micelle concentration (cmc) of NaDS (3–8 mM++), the diffusion coefficient is remarkably low, and increases with increasing concentration of NaDS.
Et3B-Induced Radical Reaction of 1,3-Diene Monoxide with C6F13I, PhSH, or Ph3GeH
Authors: Ichinose Yoshifumi , Oshima Koichiro , Utimoto Kiitiro 
Published: July 2006

Abstract
Treatment of 3,4-epoxy-1-butene with CgF13I, PhSH, or Ph3GeH in the presence of Et3B provides 4-substituted-2-buten-1-ol in good yield. Et3B–Ph3SnH mediated intramolecular alkylation of 1,3-diene monoxide are also described.
Experimental Evidence of N2 Formation from NO in Simulated Coal-fired Flue Gas by Electron Beam Irradiation
Authors: Namba Hideki , Aoki Yasushi , Tokunaga Okihiro , Suzuki Ryoji , Aoki Shinji 
Published: July 2006

Abstract
Nitrogen molecule formation was first observed experimentally in simulated coal-fired flue gas (NO–SO2–H2O–O2–N2) with the electron beam-ammonia treatment method in flow system. The increase of 29N2 was detected by mass-spectrometers in the flue gas containing N-15 labeled NO. The fraction of the 15NO converted to 29N2 was determined to be 23% at 14 kGy.
Syntheses and Separations of Diastereomers of Protected-Δ1-, Δ2-, and Δ3-Dehydrotripeptides
Authors: Shin Chung-gi , Kisuno Atsushi , Yonezawa Yasuchika 
Published: July 2006

Abstract
Total eighteen kinds of Δ1-, Δ2-, and Δ3-dehydrotripeptides (DHP) containing of a ΔPhe and two chiral α-amino acid residues were synthesized and the diastereomeric mixture of DHP were subjected to the HPLC separation. From the results and the 1H NMR spectral data, it was found to be significant relationship between the separation and the conformational structure of DHP.
A New Synthetic Route to Dehydrodipeptides Containing ΔAsp Residue from Oxazine-2,4-dione Derivatives
Authors: Shin Chung-gi , Yonezawa Yasuchika , Tokuumi Shoken 
Published: July 2006

Abstract
Reaction of N-benzyloxycarbonyl-dehydroaspartic acids with SOCl2 gave N-carboxy dehydroaspartic acid anhydride or oxazine-2,4-dione-6-carboxylic acids depending on the starting materials. The latter were found to be very useful compounds for the synthesis of various dehydropeptides.
Solvolytic Rearrangement of 5,6-Polymethylenebicyclo[4.2.0]octan-2-cl Derivatives to Functionalized Polymethylenebicyclo[3.2.1]- and [3.3.0]octanes
Authors: Ue Masaki , Nagashima Teruhisa , Kinugawa Masahiko , Kakiuchi Kiyomi , Tobe Yoshito , Odaira Yoshinobu , Yasuda Masahide , Shima Kensuke 
Published: July 2006

Abstract
The functionalized polymethylenebicyclo[3.2.1]- and [3.3.0]octane derivatives are newly synthesized from endo- and exo-5,6-polymethylenebicyclo[4.2.0]oct-2-yl 3,5-dinitrobenzoates by skeletal rearrangement using solvolysis.
A Soluble Poly(arylene) with Large Degree of Depolarization. Poly(2,5-pyridinediyl) Prepared by Dehalogenation Polycondensation of 2,5-Dibromopyridine with Ni(0)-Complexes
Authors: Yamamoto Takakazu , Ito Takayori , Kubota Kenji 
Published: July 2006

Abstract
Poly(2,5-pyridinediyl) was prepared by dehalogenation polycondensation of 2,5-dibromopyridine with Ni(0)-complexes. The polymer was soluble in formic acid, and the solution showed λmax at about 370 nm and large degree of depolarization.
Isolation and Structure of a New Natural Cyclopentenone Derivative from Potato Culture Solution of Phoma wasabiae Yokogi
Authors: Soga Osamu , Iwamoto Hidetoshi , Takuwa Akio , Takata Tamayo , Tsugiyama Yuko , Hamada Kensaku , Fujiwara Takaji , Nakayama Mitsuru 
Published: July 2006

Abstract
A new natural cyclopentenone derivative has been isolated from the potato culture solution of Phoma wasabiae, and its structure was determined to be (5S*)-5-acetyl-3,5-dimethoxy-2-methyl-(4R*)-4-[(2R*)-2-methylbutanoyl]-2-cyclopenten-1-one by spectroscopic and single crystal X-ray diffraction analyses.
The First Complete Optical Resolution Based on Chiral Discrimination between Ions of the Same Sign, u-fac-[Co(ida)2]− and [Sb2(d-tart)2]2−
Authors: Koine Norio 
Published: July 2006

Abstract
The complete optical resolution of the anionic complex, u-fac-[Co(ida)2]−, was achieved chromatographically by use of the anionic resolving agent, [Sb2 (d-tart)2]2−, on a strong anion-exchanger derived from Toyopearl (Fractogel TSK) gel. The chiral discrimination mechanism without direct contact of the racemate and resolving agent is suggested.
Anomalous Cycloaddition of Oxazoles with PTAD
Authors: Ibata Toshikazu , Isogami Yasushi , Tamura Hatsue 
Published: July 2006

Abstract
The reaction of various substituted oxazoles with 4-phenyl-1,2,4-triazole-3,5-dione gave anomalous cycloadducts, N-phenyl-5-acyl-Δ3-1,2,4-triazoline-1,2-dicarboximides in high yields through oxazole ring opening. The structure of one of the adducts was determined by a single-crystal X-ray analysis.
Thiolate-Bridged Binuclear Nickel(II) Complex with Thioether Pendant Groups
Authors: Handa Makoto , Mikuriya Masahiro , Okawa Hisashi , Kida Sigeo 
Published: July 2006

Abstract
A binuclear nickel(II) complex with N-[2-(2-pyridyl)ethyl]-N-[2-(methylthio)ethyl]-2-aminoethanethiol (HL), [Ni2(L)2](ClO4)2·H2O has been prepared and characterized by electronic spectra and magnetic susceptibilities (87–300 K). X-Ray structure analysis has revealed that the two nickel ions are bridged by two thiolate sulfur atoms, and each of them takes an elongated square-pyramidal configuration with a pendant thioether at the apex.
Crystal Structures of β-Cyclodextrin and Heptakis(2,6-di-O-methyl)-β-cyclodextrin Complexes with Carmofur
Authors: Harata Kazuaki , Hirayama Fumitoshi , Uekama Kaneto , Tsoucaris George 
Published: July 2006

Abstract
Two β-cyclodextrin molecules form a head-to-head dimer, into which the hexyl group of carmofur is inserted from the primary hydroxyl side. The fluorouracil moiety is located outside the host cavity and forms a face-to-face dimer with another one related by a pseudo twofold axis. The carmofur molecule in the heptakis(2,6-di-O-methyl)-β-cyclodextrin complex is disordered and occupies two sites. One is located outside the host cavity, while the hexyl group of the other is inserted into the host macrocycle.
Laser Fluorescence Excitation Spectrum of Jet-cooled 3-Isopropyltropolone. Proton Tunneling in the S1 State
Authors: Sekiya Hiroshi , Takesue Hiroto , Nishimura Yukio , Li Zhi-Hong , Mori Akira , Takeshita Hitoshi 
Published: July 2006

Abstract
Laser excited fluorescence spectra and dispersed fluorescence spectra of 3-isopropyltropolone have been measured in ultracold gas phase by a supersonic expansion. The tunneling splittings in the zero-point level of the S1 state have been determined to be 58 and 14 cm−1 for normal and deuterated species, respectively.