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Showing results for keto oshima
Your search for Keito Oshima retrieved no results
Enantioselective total syntheses of several bioactive natural products based on the development of practical asymmetric catalysis.
Ohshima T. Ohshima T. Chem Pharm Bull (Tokyo). 2004 Sep;52(9):1031-52. doi: 10.1248/cpb.52.1031. Chem Pharm Bull (Tokyo). 2004. PMID: 15340187 Free article. Review.
To broaden the substrate generality of the Michael reaction, we developed a highly stable, storable, and reusable La-O-linked-BINOL complex. Further extension of the reaction using beta-keto ester as a Michael donor was achieved with the development of a La-NR-linked-BINOL …
To broaden the substrate generality of the Michael reaction, we developed a highly stable, storable, and reusable La-O-linked-BINOL complex. …
AKR1A1 Variant Associated With Schizophrenia Causes Exon Skipping, Leading to Loss of Enzymatic Activity.
Iino K, Toriumi K, Agarie R, Miyashita M, Suzuki K, Horiuchi Y, Niizato K, Oshima K, Imai A, Nagase Y, Kushima I, Koike S, Ikegame T, Jinde S, Nagata E, Washizuka S, Miyata T, Takizawa S, Hashimoto R, Kasai K, Ozaki N, Itokawa M, Arai M. Iino K, et al. Front Genet. 2021 Dec 6;12:762999. doi: 10.3389/fgene.2021.762999. eCollection 2021. Front Genet. 2021. PMID: 34938315 Free PMC article.
However, the cause of GlucA accumulation remains unclear. Aldo-keto reductase family one member A1 (AKR1A1) is an oxidoreductase that catalyzes the reduction of GlucA. ...
However, the cause of GlucA accumulation remains unclear. Aldo-keto reductase family one member A1 (AKR1A1) is an oxidoreductase that …
Reaction of silyldihalomethyllithiums with nitriles: formation of alpha-keto acylsilanes via azirines and 1,3-rearrangement of silyl group from C to N.
Yagi K, Tsuritani T, Takami K, Shinokubo H, Oshima K. Yagi K, et al. J Am Chem Soc. 2004 Jul 21;126(28):8618-9. doi: 10.1021/ja047708o. J Am Chem Soc. 2004. PMID: 15250691
A synthesis of alpha-keto acylsilanes, where 2-bromo-2H-azirine participates as a key intermediate, is reported. The reaction of silyldibromomethyllithium with aryl nitriles provides alpha-keto acylsilanes in good yields. Interestingly, silyldichloromethyllithium in …
A synthesis of alpha-keto acylsilanes, where 2-bromo-2H-azirine participates as a key intermediate, is reported. The reaction of sily …
Tuning the tautomeric behavior of tris(salicylaldimines).
Mehr SHM, Oshima H, Carta V, Patrick BO, White NG, MacLachlan MJ. Mehr SHM, et al. Org Biomol Chem. 2017 Oct 11;15(39):8418-8424. doi: 10.1039/c7ob02058a. Org Biomol Chem. 2017. PMID: 28952647
NMR and single-crystal X-ray diffraction studies showed that they are found in different tautomeric forms, ranging from keto-enamine to enol-imine, with two showing intermediate behavior. We present a simple structural model governing the relative stability of the keto …
NMR and single-crystal X-ray diffraction studies showed that they are found in different tautomeric forms, ranging from keto-enamine …
Potent antimalarial febrifugine analogues against the plasmodium malaria parasite.
Kikuchi H, Tasaka H, Hirai S, Takaya Y, Iwabuchi Y, Ooi H, Hatakeyama S, Kim HS, Wataya Y, Oshima Y. Kikuchi H, et al. J Med Chem. 2002 Jun 6;45(12):2563-70. doi: 10.1021/jm010448q. J Med Chem. 2002. PMID: 12036365
The activities of the analogues derived from Df-1 (3) and Df-2 (4), condensation products of 1 and 2 with acetone, respectively, were also obtained. The 3' '-keto derivative (7, EC(50) = 2.0 x 10(-8) M) of 1 was found to exhibit potential antimalarial activity with high se …
The activities of the analogues derived from Df-1 (3) and Df-2 (4), condensation products of 1 and 2 with acetone, respectively, were also o …
Prebiotic origin of glycolytic metabolism: histidine and cysteine can produce acetyl CoA from glucose via reactions homologous to non-phosphorylated Entner-Doudoroff pathway.
Shimizu M, Yamagishi A, Kinoshita K, Shida Y, Oshima T. Shimizu M, et al. J Biochem. 2008 Sep;144(3):383-8. doi: 10.1093/jb/mvn073. Epub 2008 May 31. J Biochem. 2008. PMID: 18515857
Conversion of glucose to pyruvate via reactions homologous to the non-phosphorylated Entner-Doudoroff (non-P ED) pathway could be achieved in the presence of two amino acid catalysts, cysteine and histidine: cystine oxidizes glucose to gluconic acid by the reaction homologous to …
Conversion of glucose to pyruvate via reactions homologous to the non-phosphorylated Entner-Doudoroff (non-P ED) pathway could be achieved i …
An aspartate aminotransferase from an extremely thermophilic bacterium, Thermus thermophilus HB8.
Okamoto A, Kato R, Masui R, Yamagishi A, Oshima T, Kuramitsu S. Okamoto A, et al. J Biochem. 1996 Jan;119(1):135-44. doi: 10.1093/oxfordjournals.jbchem.a021198. J Biochem. 1996. PMID: 8907187 Free article.
T. thermophilus AspAT was strictly specific for acidic amino acid substrates, such as aspartate, glutamate, and the respective keto acids. The gene coding for T. thermophilus AspAT showed that it comprised 1,155 bp with a high G+C content (70 mol%), and encoded a 385-resid …
T. thermophilus AspAT was strictly specific for acidic amino acid substrates, such as aspartate, glutamate, and the respective keto a …
Estrogen replacement suppresses function of thrombin stimulated platelets by inhibiting Ca(2+) influx and raising cyclic adenosine monophosphate.
Nakano Y, Oshima T, Ozono R, Ueda A, Oue Y, Matsuura H, Sanada M, Ohama K, Chayama K, Kambe M. Nakano Y, et al. Cardiovasc Res. 2002 Feb 15;53(3):634-41. doi: 10.1016/s0008-6363(01)00410-2. Cardiovasc Res. 2002. PMID: 11861034 Clinical Trial.
RESULTS: After ERT, (1) plasma concentrations of estrone and estradiol significantly increased (estrone: 16 +/- 7-211+/- 80 pg/ml, estradiol: 14+/- 3-125 +/- 49 pg/ml, P<0.05) and LDL-cholesterol decreased (129 +/- 23-94 +/- 25 mg/dl, P<0.05). Plasma 6-keto-PG F(1) a …
RESULTS: After ERT, (1) plasma concentrations of estrone and estradiol significantly increased (estrone: 16 +/- 7-211+/- 80 pg/ml, estradiol …
In vitro antiplatelet profiles of the new thromboxane synthetase inhibitor sodium 2-(1-imidazolylmethyl)-4,5-dihydrobenzo[b]thiophene-6-carboxylate.
Asai F, Ito T, Ushiyama S, Matsuda K, Oshima T. Asai F, et al. Arzneimittelforschung. 1991 May;41(5):506-10. Arzneimittelforschung. 1991. PMID: 1898421
Incubation of clotting whole blood from man, rabbits, and dogs with CS-518 resulted in a concentration-dependent reduction of TXB2 production and an increase in 6-keto-PGF1 alpha. Similar properties were also observed for ozagrel and isbogrel, but both agents were less eff …
Incubation of clotting whole blood from man, rabbits, and dogs with CS-518 resulted in a concentration-dependent reduction of TXB2 productio …
Kinetic evidence for remote pi-aryl participation in the BF3-catalyzed rearrangement of [2 + 2] photocycloadducts of diarylhomobenzoquinones with diphenylacetylene.
Koizumi T, Harada K, Mochizuki E, Kokubo K, Oshima T. Koizumi T, et al. Org Lett. 2004 Oct 28;6(22):4081-4. doi: 10.1021/ol0481986. Org Lett. 2004. PMID: 15496104
[reaction: see text] The BF(3)-catalyzed rearrangement of cyclobutene-fused m- and p-substituted diarylhomobenzoquinones exclusively gave the keto-alcohols via a Wagner-Meerwein vinyl-anion migration followed by the annulation of a delta-located endo-aryl group. ...
[reaction: see text] The BF(3)-catalyzed rearrangement of cyclobutene-fused m- and p-substituted diarylhomobenzoquinones exclusively gave th …
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