Výsledky vyhledávání - "Morio Yashiro"

Hydrolysis of Diribonucleoside Monophosphate Diesters Assisted by a Manganese(II) Complex

Autor: Youichi Ishii, Morio Yashiro, Maiko Higuchi, Makoto Komiyama

Publikováno v: Bulletin of the Chemical Society of Japan. 76:1813-1817

An Mn2+ complex with 2,2′:6′,2″-terpyridine (terpy) was found to promote the hydrolysis of NpN (NpN = diribonucleoside monophosphate diester) efficiently at pH 7.0 and 50 °C under ambient conditions. The structure of the Mn2+ complex involving

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3aeed2731ef560fdb5af224bde4db436
https://doi.org/10.1246/bcsj.76.1813

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Metal-ion-assisted hydrolysis of dipeptides involving a serine residue in a neutral aqueous solutionElectronic supplementary information (ESI) available: Kinetic studies involving pH and concentration profiles of the rate constant. See http://www.rsc.org/suppdata/ob/b2/b209565c

Autor: Morio Yashiro, Tohru Takarada, Ai Yamamura, Yoko Sonobe, Makoto Komiyama, Yuki Fujii

Publikováno v: Organic & Biomolecular Chemistry. 1:629-632

Dipeptides having a serine residue at the C-terminus, X-Ser, where X is an appropriate amino acid residue, were efficiently hydrolyzed in the presence of ZnCl2 at pH 7.0. The rapid hydrolysis of X-Ser is due to an autocatalysis of the hydroxy group i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4a68b08c1ba402192bcdfe0ca7ae1541
https://doi.org/10.1039/b209565c

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Catalytic Hydrolysis of Peptides by Cerium(IV)

Autor: Morio Yashiro, Makoto Komiyama, Tohru Takarada

Publikováno v: Chemistry – A European Journal. 6:3906-3913

Oligopeptides are efficiently hydrolyzed by Ce(IV) to the corresponding amino acids under mild conditions. The pseudo first-order rate constants for the hydrolysis of H-Gly-Phe-OH and H-Gly-Gly-OH at pH 7.0 and 50 degrees C are 3.5 x 10(-1) and 2.8 x

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eb407c5c154cb96a9108f439ecfdbd0e
https://doi.org/10.1002/1521-3765(20001103)6:21<3906::aid-chem3906>3.0.co

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Lanthanide ion-induced hydrolyses of alkyl esters and amides of ?-amino acids

Autor: Morio Yashiro, Tohru Takarada, Makoto Komiyama, Rei Takahashi

Publikováno v: Journal of Physical Organic Chemistry. 11:41-46

Lanthanide ion-induced hydrolyses of methyl esters, ethyl esters, and amides of α-amino acids were systematically studied. In the hydrolysis of the alkyl esters, all the lanthanide ions are effective and the catalytic activities decrease in the orde

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7af3b9bf72f249fb0984063fd3334124
https://doi.org/10.1002/(sici)1099-1395(199801)11:1<41::aid-poc969>3.0.co

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RNA hydrolysis by cobalt(III) complexes 1

Autor: Hidetoshi Tsuzuki, Tetsuro Shiiba, Yoichi Matsumoto, Jun Sumaoka, Makoto Komiyama, Morio Yashiro, Hideaki Yajima, Hideyuki Takahashi

Publikováno v: Journal of the Chemical Society, Perkin Transactions 2. :691-696

Adenylyl(3′-5′)adenosine (ApA) and uridylyl(3′-5′)uridine (UpU) are hydrolyzed at pH 7.0 and 50 °C by [Co(N)4(OH2)2]3+ complexes (N: coordinated nitrogen atom). The pseudo-first-order rate constants for ApA hydrolysis by the triethylenetetra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7fb77cb54253681de4a979b5d71a333e
https://doi.org/10.1039/a706624d

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Structure–reactivity relationship for the cobalt(III) complex-catalysed hydrolysis of adenosine 3′,5′-cyclic monophosphate 1

Autor: Koji Yonezawa, Jun Sumaoka, Yoichi Matsumoto, Makoto Komiyama, Morio Yashiro

Publikováno v: Journal of the Chemical Society, Perkin Transactions 2. :75-78

Hydrolysis of adenosine 3′,5′-cyclic monophosphate (cAMP) by cobalt(III) complexes [Co(N4)(H2O)2]3+ (N4: two diamines or one tetraamine) has been systematically studied at pH 7 and 50 oC. Both the catalytic activity and the product distribution a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5dbd189c3ce186c413f3fee4a222a610
https://doi.org/10.1039/a604305d

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Remarkable Effect ofC-Methyl Substitutions on the Ligand Field Strength of a Cobalt(III) Complex Containing a Cyclic Tetraamine with a Foldedcis-Type Configuration

Autor: Kana Kuroda, Sadao Yoshikawa, Shuji Miura, Morio Yashiro, Makoto Komiyama, Shigenobu Yano

Publikováno v: Bulletin of the Chemical Society of Japan. 67:3276-3281

Cobalt(III) complexes containing an optically active 14-membered cyclic tetraamine (R,R-Me6[14]aneN4, 7(R), 14(R)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane) and a bidentate ligand (glycinato, S-alaninato, or oxalato), in which the t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df32172c52c040ac746f176830849988
https://doi.org/10.1246/bcsj.67.3276

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Rare Earth Metal Ions for DNA Hydrolyses and Their Use to Artificial Nuclease1

Autor: Yota Takahashi, Naoya Takeda, Tetsuro Shiiba, Yoichi Matsumoto, Morio Yashiro, Makoto Komiyama

Publikováno v: Nucleosides and Nucleotides. 13:1297-1309

Phosphodiester linkages in linear DNAs are efficiently hydrolyzed by rare earth metal salts. The activities of CeCl3 and Ce(NH4)2(NO3)6 are especially large. Artificial hydrolytic nuclease for highly selective scission of DNA has been prepared by the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c8a5b951c84221e866f89ef8095714d
https://doi.org/10.1080/15257779408012152

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DNA Hydrolysis by Cerium(IV) Does Not Involve either Molecular Oxygen or Hydrogen Peroxide

Autor: Teruyuki Kodama, Naoya Takeda, Makoto Komiyama, Morio Yashiro, Tetsuro Shiiba, Jun Sumaoka

Publikováno v: Chemistry Letters. 23:1025-1028

DNA hydrolysis by Ce(IV) effectively proceeds both in the presence and in the absence of molecular oxygen. Addition of hydrogen peroxide induces undesired oxidative side-reactions and suppresses the hydrolysis. Participation of molecular oxygen and h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7cfead54d8a951dce6c25c9d9c2792fc
https://doi.org/10.1246/cl.1994.1025

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