Výsledky vyhledávání - "Megumi Shimojo"

Easy separation of optically active products by enzymatic hydrolysis of soluble polymer-supported substrates

Autor: Masaki Nogawa, Masayuki Okudomi, Megumi Shimojo, Natsue Taketa, Kazutsugu Matsumoto, Ayae Hamanaka

Publikováno v: Tetrahedron Letters. 48:8540-8543

The easy separation of optically active compounds from enzymatic kinetic resolution products by simple precipitation using poly(ethylene glycol)(PEG)-supported carbonates is disclosed. The water-soluble substrate was prepared by the immobilization of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1e1004adff764d9deb466fa5155a724
https://doi.org/10.1016/j.tetlet.2007.09.141

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Enantioselective microbial hydrolysis of dissymmetrical cyclic carbonates with disubstitution

Autor: Minoru Hatanaka, Kazutsugu Matsumoto, Hiromichi Ohta, Rie Iizuka, Masaki Nogawa, Satomi Sugawara, Megumi Shimojo

Publikováno v: Tetrahedron. 62:12071-12083

Enantioselective microbial hydrolysis of C1 and C2 dissymmetrical cyclic carbonates with disubstitution (methyl and another groups) has been developed. Pseudomonas diminuta (FU0090), a bacterium, efficiently catalyzes the hydrolysis of five-membered

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ae3a6c07273795ff02757cb179a2a4c3
https://doi.org/10.1016/j.tet.2006.09.066

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Kinetic resolution of poly(ethylene glycol)-supported carbonates by enzymatic hydrolysis

Autor: Megumi Shimojo, Yuji Nemoto, Masayuki Okudomi, Masaki Nogawa, Hiromichi Ohta, Kazutsugu Matsumoto

Publikováno v: Tetrahedron. 62:7300-7306

The enzyme-mediated enantioselective hydrolysis of poly(ethylene glycol) (PEG)-supported carbonates is disclosed. The water-soluble carbonates were prepared by immobilization of a racemic secondary alcohol (4-benzyloxy-2-butanol) onto low-molecular w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::932338498e2451ca16505889ddf6e6a4
https://doi.org/10.1016/j.tet.2006.05.020

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Enzyme-mediated enantioselective hydrolysis of poly(ethylene glycol)-supported carbonates

Autor: Hiromochi Ohta, Masaki Nogawa, Yuji Nemoto, Kazutsugu Matsumoto, Megumi Shimojo

Publikováno v: Tetrahedron Letters. 45:6769-6773

Kinetic resolution of poly(ethylene glycol)(PEG)-supported carbonates by enzymatic hydrolysis is discussed. Water-soluble carbonates are prepared by immobilization of racemic secondary alcohols onto low-molecular weight monomethoxy PEG (MPEG) through

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::627a1edbfe72ea27dac0785d8bb4e975
https://doi.org/10.1016/j.tetlet.2004.07.031

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Enzyme-mediated enantioselective hydrolysis of cyclic carbonates bearing an unsaturated substituent

Autor: Yasuhide Nakamura, Megumi Shimojo, Minoru Hatanaka, Kazutsugu Matsumoto

Publikováno v: Tetrahedron Letters. 43:6933-6936

A new method for the preparation of optically active five-membered cyclic carbonates bearing an unsaturated substituent via an enzymatic reaction is described. In the examination of the regiospecific recognition of PPL, dl-(E)-4-(1-octenyl)-1,3-dioxo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::61bde095ea01460f5a271696979475a8
https://doi.org/10.1016/s0040-4039(02)01628-3

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Enzyme-Mediated Preparation of Optically Active 1,2-Diols Bearing a Long Chain: Enantioselective Hydrolysis of Cyclic Carbonates

Autor: Megumi Shimojo, Minoru Hatanaka, Kazutsugu Matsumoto

Publikováno v: Tetrahedron. 56:9281-9288

A new entry for the efficient preparation of optically active 1,2-diols having a long aliphatic chain via an enzymatic reaction is disclosed. PPL catalyzes the hydrolysis of a racemic five-membered cyclic carbonate, 4-(7-benzyloxy)heptyl-1,3-dioxolan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c3106c5e05bd4211439df76475f6099
https://doi.org/10.1016/s0040-4020(00)00904-2

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Highly enantioselective preparation of C2-symmetrical diols: microbial hydrolysis of cyclic carbonates

Autor: Minoru Hatanaka, Youichi Sato, Megumi Shimojo, Kazutsugu Matsumoto

Publikováno v: Tetrahedron: Asymmetry. 11:1965-1973

A new type of microbial enantioselective hydrolysis of C 2 -symmetrical cyclic carbonates is disclosed. During the screening test of the five-membered substrate (4,5-dimethyl-1,3-dioxolan-2-one 5 ), Pseudomonas diminuta was selected as the best strai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::99807cb88692c3211815ae15cf78da63
https://doi.org/10.1016/s0957-4166(00)00144-0

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Preparation of Optically Active Diol Derivatives by the Enzymatic Hydrolysis of Cyclic Carbonates

Autor: Megumi Shimojo, Hidehiko Kitajima, Seiji Fuwa, Kazutsugu Matsumoto

Publikováno v: Bulletin of the Chemical Society of Japan. 69:2977-2987

A simple enzymatic method for the preparation of optically active 1,2- and 1,3-diol derivatives is disclosed. In the screening of enzymes, racemic 4-[(2-benzyloxy)ethyl]-1,3-dioxolan-2-one (1a) was enantioselectively hydrolyzed by porcine pancreas li

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e09c5d52d7edbcb2addc581eb617c00
https://doi.org/10.1246/bcsj.69.2977

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