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Volume 8, Issue 12
Displaying 1-29 of 29 articles from this issue
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Susumu Matsuzaki, Tetsuya Mitsuishi, Chisumi Etoh, Koichi Toyoda1979 Volume 8 Issue 12 Pages 1417-1418
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTwo resonant lines were observed in the Raman spectra of chloranil anion radical dimers with exciting radiation close to the CT band, and were assigned to inter-radical stretching vibrations. The change of the relative intensity of these lines depending on counter ions was attributed to the formation of two different dimers.View full abstract -
Zélimir Gabelica1979 Volume 8 Issue 12 Pages 1419-1422
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSSolid state infrared and Raman spectra of cadmium thiosulfate dihydrate, CdS2O3·2H2O,have been examined. The splittings and the shifts of the internal frequencies of the coordinated S2O3 anions were found to characterize bridging thiosulfate groups binding two cadmium ions through the external sulfur atom.View full abstract -
Jean-Pierre Besse, Gilbert Baud, Raymond Chevalier1979 Volume 8 Issue 12 Pages 1423-1426
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe anionic conductivity of new halogenoapatites Ba5(ReO5)3X (X = F, Cl, Br) has been measured in the temperature range from 300°C to 700°C. The results are in good agreement with the coordination number and the size of mobile species.View full abstract -
Masaji Oda, Akira Yamamuro, Takashi Watabe1979 Volume 8 Issue 12 Pages 1427-1430
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTreatment of ketones with trimethylsilyl cyanide in benzene in the presence of a Lewis acid (ZnI2) as a catalyst and subsequent heating after addition of pyridine and phosphoryl chloride have given α,β,-unsaturated nitriles in good yields, providing a general one-pot preparation of α,β,-unsaturated nitriles from ketones.View full abstract -
Makoto Nitta, Shoji Sogo, Tadashi Nakayama1979 Volume 8 Issue 12 Pages 1431-1434
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS9-Aryl-7-oxa-8-azatricyclo[4.3.1.0]deca-2,4,8-trienes (Ia and Ib) were synthesized by the cycloaddition reaction of benzocyclopropene with benzonitrile oxide and mesitonitrile oxide, respectively. The closed norcaradiene structures were preferable to the opened bridged oxazonine isomers in the range of 25–120°C.View full abstract -
Ilsong Rhee, Ilhyong Ryu, Haruo Omura, Shinji Murai, Noboru Sonoda1979 Volume 8 Issue 12 Pages 1435-1436
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reaction of a variety of α-iodomercuric ketones with nickel carbonyl was carried out in the presence of aldehydes or ketones to afford α,β-unsaturated ketones in good yields.View full abstract -
Yoshitaka Konishi, Masanori Kawamura, Yoshinobu Arai, Masaki Hayashi1979 Volume 8 Issue 12 Pages 1437-1440
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe optically active 9(O)-methanoprostacyclin was synthesized from 1-2-oxa-3-oxo-6-syn-benzyloxymethyl-7-anti-(2-tetrahydropyranyloxy)-cis-bicyclo[3.3.0]octane or d-(2β-benzyloxymethyl-3α-hydroxy-4-cyclopenten-1α-y1)acetic acid, which are the general synthetic intermediates for natural prostaglandins.View full abstract -
Masahiro Tada, Yayoi Sugimoto, Takeyoshi Takahashi1979 Volume 8 Issue 12 Pages 1441-1442
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTreatment of a dianion generated from 2,4-dimethyl-3-furoic acid with 3-methoxy-2-methyl-2-cyclohexen-1-one gave 4-methyl-2-(3-oxo-2-methyl-1-cyclohexenylmethyl)-3-furoic acid. Catalytic hydrogenation of the alkylated product followed by dehydrative annelation yielded 14-norfuranoeremophilane-4,6-dione, which was converted in five steps into (±)-furanoeremophilane-3,6-dione. (±)-Ligularone has been derived from the 3,6-dione.View full abstract -
Sumihiko Okuyama, Nobuhiko Kokubun, Sakae Higashidate, Daisuke Uemura, ...1979 Volume 8 Issue 12 Pages 1443-1446
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSWe studied the use of immobilized enzyme, covalently bound to aminopropyl-CPG, to the analysis on free and conjugated individual bile acids. A microcolumn with the immobilized 3α-hydroxysteroid dehydrogenase was prepared and used in a system of high performance liquid chromatography (HPLC). Reduced NAD+ produced from bile acid by this enzyme was fluorimetrically determined with fluorometer. As the result, the free, glycine- and taurine-conjugated individual bile acids which were separated by the HPLC were determined on high sensitivity and specificity. Clinical trials were done for the serum of patients with hepatobiliary disease.View full abstract -
Hisashi Takei, Morikazu Miura, Hideyuki Sugimura, Hisashi Okamura1979 Volume 8 Issue 12 Pages 1447-1450
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSHeterocyclic sulfides and thiols react with Grignard reagents in the presence of NiCl2(Ph2PCH2CH2CH2PPh2) to afford the cross-coupling products in high yields. The reaction of 2,2′-dipyridyl disulfide with 3-phenylpropylmagnesium bromide is also described.View full abstract -
Fumio Toda, Koichi Tanaka1979 Volume 8 Issue 12 Pages 1451-1454
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe title new antiaromatic compounds were prepared by unusual insertion reactions of O, S, N, and Se to 2,7-di-t-butyl-4,5,9,10-tetraphenyltricyclo[6.2.0.03,6]deca-1,3(6),4,7,9-pentaene.View full abstract -
Tadashi Endo, Yukiko Takeda, Toyohiko Orii, Yuji Kaneko, Michio Kondo1979 Volume 8 Issue 12 Pages 1455-1458
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTetramers composed of the associating thiols (1 and 2) were suggested to be intermediates in the specific oxidation of a 1:1 mixture of 1 and 2, based on spectroscopic studies, the behavior of the selectivity in this oxidation, the determination of degree of association, and so on.View full abstract -
Norio Tsubokawa, Naoki Takeda1979 Volume 8 Issue 12 Pages 1459-1462
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIn the presence of carbon black, the two-phase dehydrogenation of hydrazobiscyclohexanenitrile and hydrazobisisobutyronitrile in organic solvent by an aqueous solution of potassium ferricyanide gave the corresponding azo-compound in a good yield. It became apparent that the two-phase dehydrogenation of the hydrazines was catalyzed by phenolic hydroxyl groups on the carbon black surface.View full abstract -
Yasushi Yokoyama, Yoshihiko Moriyama, Takahiko Tsuyuki, Takeyoshi Taka ...1979 Volume 8 Issue 12 Pages 1463-1466
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSD:B-Friedo-18β,19αH-lup-5-en-3β-ol was synthesized from friedelin via D:A-friedo-18β,19αH-lupan-3-one. The stereostructure of a 3α,4α-epoxide derived from the 3-one was determined by X-ray technique to show the 19αH configuration for both the epoxide and the 5-en-3β-ol, The disagreement of the spectral data of the synthetic 5-en-3β-ol with those of guimarenol is described.View full abstract -
Fumio Yoneda, Yoshiharu Sakuma, Yoko Kadokawa, Akira Koshiro1979 Volume 8 Issue 12 Pages 1467-1468
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSPyrimido[4,5-b]quinoline-2,4(3H,10H)-dione (5-deazaflavin) oxidized amines under aqueous conditions to give the corresponding carbonyl compounds. This 5-deazaflavin-dependent oxidation of amines was automatically recycled and gave more than 100% of carbonyl compounds based on the 5-deazaflavin.View full abstract -
Kazuo Ito, Yoshihisa Sakakibara, Mitsumasa Haruna, Kuo-Hsiung Lee1979 Volume 8 Issue 12 Pages 1469-1472
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSFour new sesquiterpene lactones, eupalinin-A, -B, -C, and -D, the first of which showed significant inhibitory activity against KB cell culture, were isolated from Eupatorium lindleyanum DC. and their structures were determined by a combination of chemical and physical techniques.View full abstract -
Kazuo Ito, Yoshihisa Sakakibara, Mitsumasa Haruna1979 Volume 8 Issue 12 Pages 1473-1476
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSFive new sesquiterpene lactones, eupachifolin-A, -B, -C, -D, and -E, were isolated from Eupatorium chinense var. simplicifolium (Makino) Kitam. and their structures were described. Eupachifolin-A belongs to the class of cis-Δ4,5,cis-Δ1,10-germacranolides, whereas eupachifolin-B, -C, -D, and -E are mutually related guaianolides. Structures and stereochemistries of the new sesquiterpene lactones were determined by chemical transformations and extensive use of 1H and 13C NMR spectrometry.View full abstract -
Kazuhiro Maruyama, Atsuhiro Osuka, Hitomi Suzuki1979 Volume 8 Issue 12 Pages 1477-1480
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSIrradiation of a benzene solution of bicyclic diketones 3 and/or 4 gave alkylidene phthalides 5 and 6 in good yields. Structural effects on the photoisomerization were discussed.View full abstract -
Daisuke Uemura, Yoshiaki Toya, Ichiro Watanabe, Yoshimasa Hirata1979 Volume 8 Issue 12 Pages 1481-1482
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSTwo new compounds possessing a pyrazine ring system were isolated from the zoanthid Palythoa tuberculosa. These compounds have now been named palythazine and isopalythazine and assigned to structures 1 and 2, respectively, by means of spectral analysis and synthesis.View full abstract -
Makoto Onaka, Toshio Goto, Teruaki Mukaiyama1979 Volume 8 Issue 12 Pages 1483-1486
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSVarious π-allylnickel halides were found to react with 2-pyridyl carboxylates to give β,γ-unsaturated ketones chemospecifically in good yields.View full abstract -
Masaharu Ueno, Hiroshi Kishimoto1979 Volume 8 Issue 12 Pages 1487-1490
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe enthalpies of complex formation of tetranactin with alkali ions in methanol were measured by a micro-calorimeter. The enthalpies were mostly determined by conformational energies of complexes and solvation enthalpies of ions. The minimum enthalpy was observed for potassium ion complex. This tendency coincided with the ion selectivity of tetranactin.View full abstract -
Emil H. White, Nobutaka Suzuki, William H. Hendrickson1979 Volume 8 Issue 12 Pages 1491-1494
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe methylene blue sensitized oxygenation of 10-Methyl-9-methylene-9,10-acridane (MMA) at −78°C yields three chemiluminescent compounds. The most stable compound, with a half-life at 0° of 15 min, is 3,3,7,7-bis-(10′-methyl-9′,9′-acridanyl)-1,2,5,6-tetraoxocane, a dioxetane dimer. The most unstable compound, with a half-life at −60°C of 2 min, is believed to be the dioxetane of MMA. The compound of intermediate stability, with a half-life at −20°C of 5 min, is believed to be the zwitterion form of the ring opened dioxetane stabilized by a hydrogen bond to water (or, by choice, to some other weak acid).View full abstract -
Tohru Kikuchi, Matao Kanaoka, Sayaka Hanagaki, Shigetoshi Kadota1979 Volume 8 Issue 12 Pages 1495-1498
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS24,25-Dideoxy-fasciculol-A, fasciculol-A and its C-24 epimer were synthesized from lanosterol and the absolute stereo-structure of fasciculol-A was confirmed.View full abstract -
Hisao Nakai, Nobuyuki Hamanaka, Hajimu Miyake, Masaki Hayashi1979 Volume 8 Issue 12 Pages 1499-1502
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESS(5E)- And (5Z)-5-fluoro-prostaglandin(PG)F2α methyl esters 1 and 2 were synthesized via decarboxylative elimination reaction from key intermediate α-fluoro-β-hydroxy ester 7. 5-Fluoro-6-keto-PGE1 methyl ester 3 was also synthesized from the key intermediate 7. These 5-fluoro-PGs 1, 2 and 3 showed interesting biological properties.View full abstract -
Kazuo Ito, Yoshihisa Sakakibara, Mitsumasa Haruna1979 Volume 8 Issue 12 Pages 1503-1506
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThree new germacranolide sesquiterpene lactones, peroxysachalinin, sachalinin, and sachalin, were isolated from Eupatorium sachalinense (Fr. Schmidt) Makino and their structures were described. An allyl hydroperoxy sesquiterpene lactone, peroxysachalinin, was characterized by spectral and chemical methods and prepared by photosensitized oxygenation of eupatoriopicrin which was a main component of this plant. Peroxysachalinin was converted to sachalinin with triphenylphosphine, whereas sachalinin was converted to sachalin.View full abstract -
Masao Nakazaki, Yoshiki Hirose, Toru Shimizu, Takaaki Suzuki, Akira Is ...1979 Volume 8 Issue 12 Pages 1507-1508
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe (−)-Cotton effect indicates (pS)-configuration to (−)-4-methyl-1-oxo[2.2]metacyclophane (17) which was isolated from a culture solution of (±)-14 with Rhodotorula rubra, and the conversion of (−)-17 to (+)-4-methyl[2.2]metacyclophane (21) via 19 assigns (pR)-configuration to (+)-21, contrary to Schlögl’s proposal.View full abstract -
Shin-ichi Nishikiori, Toschitake Iwamoto, Yukichi Yoshino1979 Volume 8 Issue 12 Pages 1509-1512
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe en ligand bridging a pair of Cd atoms in the host structure of an en-Td type Cd(en)Cd(CN)4·2C6H6 clathrate was concluded to turn to a chelating ligand in the residual host metal complex Cd(en)Cd(CN)4 left after releasing the guest molecules in vacuo at 100°C from the structural analysis of the Cd(en)Cd(CN)4 crystal independently grown up from an aqueous solution.View full abstract -
Teiji Kohara, Sanshiro Komiya, Takakazu Yamamoto, Akio Yamamoto1979 Volume 8 Issue 12 Pages 1513-1516
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSThe reaction of NiR(O-p-C6H4CN)(bpy) (R = C2H5 (1a), CH3 (1b)) with CO in a 1:1 ratio affords Ni(COR)(O-p-C6H4CN)(bpy) (R = C2H5 (2a), CH3 (2b)). p-Cyanophenyl esters are reductively eliminated from 2 on treating the complexes with π-acids such as maleic anhydride and CO. Reactions of various alkyl(phenoxo)nickel complexes NiR(OC6H4X)L2 with CO give RCOOC6H4X in high yields.View full abstract -
Ikuo Abe, Katsumi Hayashi, Mutsuo Kitagawa, Toshihiro Urahata1979 Volume 8 Issue 12 Pages 1517-1520
Published: December 05, 1979
Released on J-STAGE: March 27, 2006
JOURNAL FREE ACCESSA method, which is based on the Polanyi adsorption potential theory, is presented for estimating the adsorption isotherms of surfactants from aqueous solution onto activated carbon, from the knowledge of the critical micelle concentration, the molar volume, and a “characteristic curve” determined from a single isotherm.View full abstract
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