Search Results - "TAKASUKA, M"

IR and Raman spectral and X-ray structural studies of polymorphic forms of sulfamethoxazole by Takasuka, Mamoru, Nakai, Hiroshi

“…The crystal structure of the polymorphic form III (hemihydrate) of sulfamethoxazole (SMZ) was determined to exist in both the E- and Z-forms by X-ray analysis…”
Get full text

Solvolysis of 2-Aryl-2-chloro-4,4-dimethylpentanes. Confirmation of Validity of Brown−Okamoto σ+ Constants by Takeuchi, Ken'ichi, Takasuka, Masaaki, Ohga, Yasushi, Okazaki, Takao

“…Specific rate constants of solvolysis in 90% aqueous acetone have been determined at 25 °C for 10 2-aryl-2-chloro-4,4-dimethylpentanes (3) having a substituent…”
Get full text

Study of substituent effects on rotational isomers and monomer–dimer equilibria of the 3-carboxy group in 4-substituted (R)-2-(3,4-methylenedioxyphenyl)-6-isopropyloxy-2H-chromen-3-carboxylic acids in dilute CCl4 and CHCl3 solutions by FTIR spectroscopy by Takasuka, Mamoru, Matsumura, Kenichi, Ishizuka, Natsuki

Get full text

Experimental and Theoretical Evaluation of Energetics for Nucleophilic Solvent Participation in the Solvolysis of Tertiary Alkyl Chlorides on the Basis of Gas Phase Bridgehead Carbocation Stabilities by Takeuchi, Ken'ichi, Takasuka, Masaaki, Shiba, Eiji, Kinoshita, Tomomi, Okazaki, Takao, Abboud, José-Luis M, Notario, Rafael, Castaño, Obis

“…The specific rates of solvolysis in 80% ethanol and 97% 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) for various tertiary alkyl chlorides having different steric…”
Get full text

Intramolecular hydrogen bondings and conformations of peptidic HIV-1 protease inhibitors studied by FTIR and CD spectroscopies by Takasuka, Mamoru, Fujioka, Toshihiro, Iwata, Tatsuo

“…FTIR spectra of tripeptides IV– VIII and KNI- 272, tetrapeptides IX– XIV, and their related compounds I– III were measured in dilute CH 2Cl 2 solution, in…”
Get full text

Study of substituent effects on intramolecular hydrogen bonding of (5Z)-7-[(1R,2R,3S,5S)-2-(4-substituted benzoylamino)-6,6-dimethylbicyclo[3.1.1]hept-3-yl]hept-5-enoic acids and their esters in dilute CCl4 solution by FTIR spectroscopy by Takasuka, Mamoru, Honma, Tsunetoshi, Saito, Takashi

Get full text

Vibrational spectra of B-trihaloborazines by Niedenzu, K, Blick, K. E, Sawodny, W, Takasuka, M, Totani, T, Watanabe, H

Get full text

Grunwald−Winstein Relations in the Solvolyses of Highly Congested Simple Secondary and Tertiary Alkyl Systems. Evidence for the Brønsted Base-Type Solvation in the Standard 1- and 2-Adamantyl Systems by Takeuchi, Ken'ichi, Ohga, Yasushi, Ushino, Takuhiro, Takasuka, Masaaki

Get full text

Pathologically Proven Intraocular Infiltration With Adult T-Cell Leukemia/Lymphoma: Two New Cases With Either Vitreous Opacity or Aqueous Hypopyon and Literature Review of 16 Cases by Matsuo, Toshihiko, Shimizu, Takehiro, Tanaka, Takehiro, Yamamoto, Akira, Takasuka, Hiroki

“…This study reported 2 new patients and 16 historical cases with pathologically proven intraocular infiltration with adult T-cell leukemia and lymphoma (ATLL)…”
Get full text

Fourier transform infrared and circular dichroism spectroscopic studies of hydrogen bonding in micacocidin A and micacocidin in dilute CH2Cl2 or CHCl3 solution by Takasuka, Mamoru, Kobayashi, Shinobu, Ino, Akira, Iwata, Tatsuo, Hayase, Yoshio

Get full text

The Grunwald-Winstein relationship in the solvolysis of crowded tertiary alkyl chlorides. Hindered hydration and hydrophobic effect by Takeuchi, Ken'ichi, Takasuka, Masaaki, Shiba, Eiji, Tokunaga, Hironobu, Endo, Tadasuke, Ushino, Takuhiro, Tokunaga, Kazuhiko, Okazaki, Takao, Kinoshita, Tomomi, Ohga, Yasushi

“…Various highly crowded tertiary alkyl chlorides having a neopentyl or a (1‐adamantyl)methyl substituent on the reaction center were subjected to solvolysis…”
Get full text

Fourier transform infrared spectrometric study of tautomeric (enol-keto) and dimeric equilibria in 2-hydroxypyridines and 1,3-cyclohexanediones in CHCl3 and/or CCl4 solutions by Takasuka, Mamoru, Saito, Takashi, Nakai, Hiroshi

Get full text

Structural effects of the Grunwald-Winstein correlations in the solvolysis of some simple tertiary alkyl chlorides by Takeuchi, Kenichi, Ohga, Yasushi, Ushino, Takushiro, Takasuka, Masaaki

“…The rates of solvolysis in various solvents at 25 °C were determined for five tertiary alkyl chlorides: 2‐chloro‐2,4,4‐trimethylpentane (4),…”
Get full text

FTIR spectral study of intramolecular hydrogen bonding in E-type of 15-keto-prostaglandins in dilute CCl4 solution: structure-activity relationships by Takasuka, M, Yamakawa, M

“…FTIR spectra of 15-keto-prostaglandin (PG)E2 (1), 15-keto-PGE1 (2), 13,14-dihydro-15-keto-PGE2 (3), 13,14-dihydro-15-keto-PGE1 (4), and their related compounds…”
Get full text

The Grunwald-Winstein type correlation for 2-chloro-2,4,4-trimethylpentane: A simple tertiary alkyl chloride that shows essentially limiting behaviour in solvolysis by Takeuchi, Ken'ichi, Ohga, Yasushi, Ushino, Takuhiro, Takasuka, Masaaki

“…Evaluation of the rates of solvolysis of 2‐chloro‐2,4,4‐trimethylpentane (4) in 17 solvents on the basis of the Grunwald‐Winstein type equation [log(k/k0) =…”
Get full text

FTIR spectral study of intramolecular hydrogen bonding in thromboxane A2 receptor antagonist S-145 and related compounds. III, Conformation and activity of S-145 analogues by TAKASUKA, M, YAMAKAWA, M, OHTANI, M

Get full text

FTIR spectral study of intramolecular hydrogen bonding in thromboxane A2 receptor agonist (U-46619), prostaglandin (PG)E2, PGD2, PGF2α, prostacyclin receptor agonist (carbacyclin), and their related compounds in dilute CCl4 solution : structure-activity relationships by TAKASUKA, M, KISHI, M, YAMAKAWA, M

“…FTIR spectra measurements and full optimization curve analysis of their spectra were done to obtain parameters of the OH and C = O stretching vibration bands…”
Get full text

FTIR spectral study of intramolecular hydrogen bonding in thromboxane A2 receptor antagonist S-145 and related compounds. 3. Conformation and activity of S-145 analogs by Takasuka, Mamoru, Yamakawa, Masumi, Ohtani, Mitsuaki

“…S-145, (+/-)-(5Z)-7-[3-endo-[(phenylsulfonyl)amino]bicyclo[2.2.1] heptenoic acid, its chain analogues HO2C(CH2)nNHSO2Ph (n = 3-8, 10, and 11) 1-8, and…”
Get full text

Relationships between structure and carbonyl stretching frequencies of the beta-lactam ring and the 7-acylamino group in 1-thia- and 1-oxa-cephem antibiotics. Importance of the bending angle of the C(4)-N(5) bond from plane C(6)-N(5)-C(8) in the beta-lactam ring by Takasuka, M, Nishikawa, J, Tori, K

Get more information

Synthesis and substituent effects on antibacterial activity, alkaline hydrolysis rates, and infrared absorption frequencies of some cephem analogs related to latamoxef (moxalactam) by Narisada, Masayuki, Yoshida, Tadashi, Ohtani, Mitsuaki, Ezumi, Kiyoshi, Takasuka, Mamoru

“…Relationships between intrinsic antibacterial activity and beta-lactam reactivity of 7 beta-[(4-hydroxyphenyl)acetyl]amino- and 7…”
Get full text