1
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Effects of silica and clay nanoparticles on the mechanical properties of poly(vinyl alcohol) nanocomposite hydrogels. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127592] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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2
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Effects of molecular mass of polymer on mechanical properties of clay/poly (ethylene oxide) blend hydrogels, and comparison between them and clay/sodium polyacrylate blend hydrogels. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-019-04476-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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3
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Basic Characteristics of Secondary Electron Emission from Foil Electrodes for New Energy Recovery Scheme of High Energy Ions in an Advanced Fusion. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst13-a16935] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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4
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Particle Discrimination Experiment for Direct Energy Conversion. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst05-a729] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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5
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Recent Results in Research on Direct Energy Conversion for a Fusion System. FUSION SCIENCE AND TECHNOLOGY 2013. [DOI: 10.13182/fst13-a16888] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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6
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Numerical Analysis of Particle Orbits for Modulation Process in Traveling Wave Direct Energy Converter. FUSION SCIENCE AND TECHNOLOGY 2013. [DOI: 10.13182/fst13-a16938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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7
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Studies on Characteristics of a Bias-Type Traveling Wave Direct Energy Converter Installed on GAMMA 10 Tandem Mirror. FUSION SCIENCE AND TECHNOLOGY 2013. [DOI: 10.13182/fst13-a16936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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8
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Examination on Plasma Production and Ion Heating for Electric Propulsion Using a Single Helical Antenna. FUSION SCIENCE AND TECHNOLOGY 2013. [DOI: 10.13182/fst13-a16964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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9
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Studies on High Density Plasma Production and Neutral Pressure Control for a Cusp-Type Direct Energy Converter Simulator. FUSION SCIENCE AND TECHNOLOGY 2013. [DOI: 10.13182/fst13-a16937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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10
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Abstract
ABSTRACTMicrodefects, revealed as ‘flow patterns’ by preferential etching using Secco's etchant, in as-grown silicon crystals have been investigated by means of a transmission electron microscopy and a preferential etching. In as-grown CZ crystals, grown at the pulling speeds of 0.4 or 1.4 mm/min, dislocation loops and clusters were observed with TEM. The dislocation loops in both crystals are interstitial type. From a thermal behavior of flow patterns by heat treatments, we confirmed that the defects revealed as flow patterns in CZ crystals do not have a similar nature of that in D-defect region of FZ crystals.
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11
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Analytical Experiments Using a Bias-Type Traveling Wave Direct Energy Converter Simulator Installed on Gamma 10 Tandem Mirror. FUSION SCIENCE AND TECHNOLOGY 2012. [DOI: 10.13182/fst12-a13408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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12
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Studies on Modulation Process of Traveling Wave Direct Energy Converter for Advanced Fusion. FUSION SCIENCE AND TECHNOLOGY 2012. [DOI: 10.13182/fst12-a13409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Simulation Experiments of Traveling Wave Direct Energy Converter on GAMMA 10 Tandem Mirror. FUSION SCIENCE AND TECHNOLOGY 2011. [DOI: 10.13182/fst11-a11609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Charge Separation and Deceleration of High Density Plasma in a Cusp Type Direct Energy Converter Simulator. FUSION SCIENCE AND TECHNOLOGY 2011. [DOI: 10.13182/fst11-a11610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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Improvement of Structure of Traveling Wave Direct Energy Converter Simulator for Ion Flux with Wide Energy Spread. FUSION SCIENCE AND TECHNOLOGY 2009. [DOI: 10.13182/fst09-a6994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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16
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Plasma Direct Energy Converter for Thermal Ions Using a Slanted Cusp Magnetic Field and Two-Stage Deceleration. FUSION SCIENCE AND TECHNOLOGY 2009. [DOI: 10.13182/fst09-a6974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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Deceleration in a traveling wave direct energy converter for advanced fusion. FUSION ENGINEERING AND DESIGN 2008. [DOI: 10.1016/j.fusengdes.2008.06.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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A study of electron momentum density distributions in polyethylene, polypropylene and polybutene. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308081749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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19
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Direct Energy Conversion Experiment on the GAMMA 10 Tandem Mirror. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Optimization of Decelerator Structure of Traveling Wave Direct Energy Converter Simulator for D- 3He Fusion. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Numerical Study of Charge Separation of Cusp DEC Installed at GAMMA 10. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Research on Characteristics of Particle Discrimination and Direct Energy Conversion for Cusp Direct Energy Converter. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Fast and Efficient Data Acquisition System for Ubiquitous Participation in DEC Experiment on GAMMA 10. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Effects of Non-Axisymmetric Magnetic Field on Characteristics of Axisymmetric Cusp DEC. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Numerical Analysis of the Second Harmonic Resonance Ion Heating in the HIEI Tandem Mirror. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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26
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Experimental and Computational Study on the Cusp-DEC and TWDEC for Advanced Fueled Fusion. FUSION SCIENCE AND TECHNOLOGY 2005. [DOI: 10.13182/fst05-a606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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186Quality of Life (QOL) after allogeneic stem cell transplantation: Prospective study of predictors of impaired QOL. Biol Blood Marrow Transplant 2003. [DOI: 10.1016/s1083-8791(03)80182-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Abstract
RNA ligands (RNA aptamers) to a protease subtilisin were selected from pools of random RNA by SELEX (systematic evolution of ligands by exponential enrichment) and by use of a subtilisin-immobilized Sepharose column. After eight rounds of selection, RNA aptamers were isolated by cloning to a plasmid vector. We characterized one of the selected RNA molecules. This RNA aptamer displayed specific inhibition toward the subtilisin activity, even when the assay for subtilisin was performed using the chromogenic small peptide as substrate, and almost no inhibitory activity toward trypsin and chymotrypsin, although these enzymes are serine proteases similar to subtilisin. These findings indicate that this RNA can differentially recognize the surfaces of similar proteases. Kinetic analysis of the RNA aptamer revealed that the inhibition constant (Ki) toward subtilisin was 2.5 microM.
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Lipogenic action of the novel oral antidiabetic agent HQL-975 in genetically obese diabetic KK-Ay mice. Biol Pharm Bull 1999; 22:572-6. [PMID: 10408228 DOI: 10.1248/bpb.22.572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
HQL-975 (3-{4-12-(5-methyl-2-phenyl-oxazol-4-yl)-ethoxyl-phenyl}-2S- propylamino-propionic acid) is a new oral antidiabetic agent which has been shown to be effective in insulin-resistant diabetic animals. In the present study, we examined the effects of HQL-975 on glucose utilization and insulin action in KK-Ay mice with genetically obese non-insulin diabetes. (1) Dietary administration of HQL-975 (19 mg/kg/d for 7 d) improved hyperglycemia, hyperlipidemia and hyperinsulinemia in the mice. (2) The HQL-975-treated mice showed enhanced net glucose utilization, that is, glucose was significantly incorporated into total lipids in the white adipose tissue (WAT) and liver, and into glycogen in the diaphragm for the last 24 h of the drug administration period. (3) Treatment improved the decreased stimulative action of insulin in the epididymal WAT and the agent increased insulin-stimulated lipogenesis from both glucose and acetate. (4) Treatment also increased the activity of lipogenic enzymes such as glycerol-3-phosphate dehydrogenase and fatty acid synthetase. (5) In vitro exposure of WAT to HQL-975 enhanced lipogenesis in the presence of insulin. From these findings, we conclude that HQL-975 improves glucose utilization of KK-Ay mice through the enhancement of insulin action, which is associated with its lipogenic effects.
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Actions of the novel oral antidiabetic agent HQL-975 in genetically obese diabetic db/db mice. Biol Pharm Bull 1998; 21:928-33. [PMID: 9781841 DOI: 10.1248/bpb.21.928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The hypoglycemic effect of the novel oral agent 3-[4-12-(5-methyl-2-phenyl-oxazol-4-yl)-ethoxy]-phenyl]-2S-propyla mino-propionic acid (HQL-975) was examined in db/db mice with genetically obese non-insulin dependent diabetes mellitus (NIDDM). The oral administration of HQL-975 at 3.5 and 35.3 mg/kg/d for 7 d decreased the plasma glucose level of these mice in a dose-dependent manner. HQL-975 also significantly decreased the plasma triglyceride, total cholesterol, non-esterified fatty acid and insulin levels. In the oral glucose tolerance test, HQL-975-treated mice showed improved glucose tolerance and decreased endogenous insulin secretion. HQL-975 increased glycemic response to exogenous insulin in the mice. In the HQL-975-treated db/db mice adipocytes, the glucose uptake, insulin binding, and GLUT4 expression were increased compared with those in untreated db/db mice adipocytes. These results indicate that HQL-975 improved insulin action in db/db mice through receptor and post-receptor effects. In conclusion, HQL-975 is a new oral antidiabetic agent with a hypoglycemic effect which is associated with an insulin-sensitizing effect. This agent may therefore be effective for the treatment of NIDDM.
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Actions of the novel oral antidiabetic agent HQL-975 in insulin-resistant non-insulin-dependent diabetes mellitus model animals. Diabetes Res Clin Pract 1998; 41:101-11. [PMID: 9789716 DOI: 10.1016/s0168-8227(98)00080-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The hypoglycemic effects of a novel oral antidiabetic agent HQL-975, were studied in normal rats, streptozotocin-induced diabetic (STZD) rats and genetically insulin-resistant non-insulin-dependent diabetes mellitus (NIDDM) model animals, KK-Ay mice and Zucker diabetic fatty (ZDF) rats. After the dietary administration of HQL-975 to KK-Ay mice, significant decreases in plasma glucose, insulin, triglyceride and non-esterified fatty acid levels were observed. The effective dosage of HQL-975 to decrease the plasma glucose level by 30% was 3.1 mg/kg per day. However, the plasma glucose level was not altered after the administration of HQL-975 in normal and STZD rats. The results suggest that HQL-975 is more effective against the abnormalities of glucose and lipid metabolism of insulin-resistant model animals than in that of normal and insulin-deficient diabetic animals. It is reported that ZDF rats indicate a severely diabetic state as a result of insulin resistance and further the presence of beta-cell insulin secretory defects. Here, HQL-975 (1-30 mg/kg per day for 7 days) was administered to ZDF rats; slight decreases in the plasma glucose (18%) and lipids (41%) levels were observed in the rats given 30 mg/kg. To clarify the action mechanism of HQL-975, we studied the effects of HQL-975 administration on the insulin action of target tissues in KK-Ay mice. After the dietary administration of HQL-975 (0.001, 0.003, 0.010% for 7 days) to KK-Ay mice, hepatic glycolytic and gluconeogenic key enzyme activities were measured. The glucose 6-phosphatase activity was decreased (20-40%) as compared with control. The results suggest that HQL-975 enhances the insulin action in hepatic enzyme regulation. To investigate the actions of HQL-975 in peripheral tissues such as muscle and adipose, an in vivo glucose uptake study using 3H-2-deoxyglucose was performed in KK-Ay mice treated with HQL-975 (0.010% for 7 days). The 2-deoxyglucose uptake of the basal state was not altered, but the insulin-stimulated 2-deoxyglucose uptake in muscle (41-191%) and adipose (46-88%) tissues was increased by the HQL-975 treatment as compared with control. These results suggest that HQL-975 also enhances the insulin action of peripheral tissues. Based on these findings, HQL-975 is expected to be useful for treatment of insulin-resistant patients with NIDDM.
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32
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RNA aptamers to a protease, subtilisin. NUCLEIC ACIDS SYMPOSIUM SERIES 1998:249-50. [PMID: 9586093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
RNA ligands (RNA aptamers) to a protease subtilisin were selected from pools of random RNA using SELEX (Systematic evolution of ligands by exponential enrichment). We selected RNA aptamers using a subtilisin-immobilized Sepharose column. After several rounds of selection, we obtained RNA aptamers that specifically inhibit the subtilisin activity. Characterization of the RNA aptamers will be reported.
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Effects of the novel oral antidiabetic agent HQL-975 on glucose and lipid metabolism in diabetic db/db mice. ARZNEIMITTEL-FORSCHUNG 1998; 48:245-250. [PMID: 9553681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The antidiabetic effects of 3-¿4-[2-(5-methyl-2-phenyl-oxazol-4- yl)ethoxy]phenyl¿-2S-propylamino-propionic acid (CAS 185679-16-7, HQL-975), a novel oral agent, on a genetically obese non-insulin-dependent diabetes mellitus (NIDDM) model (db/db mice) were examined. HQL-975 administration (3.7-34.1 mg/kg/d for 7 days) decreased the levels of plasma glucose, triglyceride, total cholesterol, non-esterified fatty acid and insulin in the mice. In an intraperitoneal glucose tolerance test (IPGTT), HQL-975 administration decreased the fasting plasma glucose level and improved the glucose tolerance in the mice. The HQL-975 administration also significantly increased the glycogenesis and lipogenesis from 14C-glucose in liver, but did not alter the glycogenesis in the diaphragm or the lipogenesis in adipose tissues at 2 h after the glucose loading. In the HQL-975-treated db/db mice, the radioactivity of 14C-glucose incorporated into hepatic glycogen was higher than that incorporated into hepatic total lipids. After the administration of HQL-975 (34.1 mg/kg/d for 7 days) to db/db mice, the hepatic hexokinase and fatty acid synthetase activities were significantly increased, the glycogen synthase I activity was increased but not significantly, and the glucose-6-phosphatase and the phosphoenolpyruvate carboxykinase activities were decreased. These results suggest that HQL-975 increases the hepatic glucose utilization and decreases the hepatic glucose production. Since hepatic glycogenesis is regulated by glucose itself but not by insulin in normoglycemic ICR mice, HQL-975 is thought to enhance the effect of glucose on the stimulation of hepatic glycogenesis. It is concluded that the enhancement of the hepatic glucose utilization played an important role in the hypoglycemic action of HQL-975.
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Microstructural effects on the Ginzburg number and the crossover behavior in d-PB/PS blends. PHYSICAL REVIEW LETTERS 1994; 73:3427-3430. [PMID: 10057378 DOI: 10.1103/physrevlett.73.3427] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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35
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36
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Enantioselective synthesis of monocyclic beta-lactams related to nocardicins via a [2 + 2] cycloaddition reaction. Chem Pharm Bull (Tokyo) 1987; 35:3985-94. [PMID: 3435933 DOI: 10.1248/cpb.35.3985] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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37
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Effect of neonatal thymectomy on experimental autoimmune hepatitis in mice. Clin Exp Immunol 1987; 67:105-13. [PMID: 3621670 PMCID: PMC1542561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Using an autoimmune hepatitis model of A/J mice which was prepared with immunization by syngeneic crude liver proteins, various influences of neonatal thymectomy were studied by observations of histological liver changes, autoantibody to liver-specific membrane lipoprotein (LSP), delayed-type hypersensitivity (DTH) to LSP, and purified protein derivative (PPD), and suppressor activity to LSP. The liver changes in the thymectomized mice were more intense than those in the non-thymectomized controls. Production of the anti-LSP autoantibodies and positive DTH to syngeneic LSP could be recognized in both groups of the thymectomized mice and the non-thymectomized controls, but the levels of those were higher in the former. In the level of DTH to PPD the thymectomized mice were lower than the non-thymectomized controls. Adoptive transfer experiments showed that suppressor activity to LSP was reduced in the spleen cells of neonatally thymectomized mice. This experiment suggests that neonatal thymectomy is apt to abolish tolerance to LSP on account of depressed suppressor activity to autoantigen, and accordingly liver damage is increased.
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[A case of asymptomatic primary biliary cirrhosis with chronic thyroiditis and triple cancers]. NIHON NAIKA GAKKAI ZASSHI. THE JOURNAL OF THE JAPANESE SOCIETY OF INTERNAL MEDICINE 1986; 75:57-61. [PMID: 3701174 DOI: 10.2169/naika.75.57] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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40
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[Changes in HBV-specific DNA polymerase activity in relation to the severity of HBsAg positive chronic liver disease]. NIHON SHOKAKIBYO GAKKAI ZASSHI = THE JAPANESE JOURNAL OF GASTRO-ENTEROLOGY 1985; 82:239-46. [PMID: 3999443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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41
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Synthesis and adjuvant activity of FK-156 analogues: acyl derivatives of N-[N2-(L-alanyl-gamma-D-glutamyl)-2(L),2'(D)-diamino-1-pimeloyl ]glycine. Chem Pharm Bull (Tokyo) 1985; 33:889-92. [PMID: 4017131 DOI: 10.1248/cpb.33.889] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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42
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Studies on structure-activity relationships of FK-156, an immunostimulating peptide, and related compounds. I. Synthesis of stereoisomeric analogues of FK-156. Chem Pharm Bull (Tokyo) 1984; 32:2925-31. [PMID: 6518578 DOI: 10.1248/cpb.32.2925] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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43
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Studies on structure-activity relationships of FK-156, an immunostimulating peptide, and related compounds. II. Synthesis of N2-(gamma-D-glutamyl)-2(L), 2'(D)-diaminopimelic acid as the minimal essential structure of FK-156. Chem Pharm Bull (Tokyo) 1984; 32:2932-41. [PMID: 6518579 DOI: 10.1248/cpb.32.2932] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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44
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Studies on a new immunoactive peptide, FK-156. IV. Synthesis of FK-156 and its geometric isomer. J Antibiot (Tokyo) 1982; 35:1300-11. [PMID: 7174517 DOI: 10.7164/antibiotics.35.1300] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
For the structural confirmation of FK-156, two possible structures, 1 and its geometric isomer 2, were synthesized. Di-Z-meso-diaminopimelic acid (4) was converted into 14 via a sequence of reactions involving, as key steps, an enzyme-mediated asymmetric hydrolysis (6 leads to 7), followed by carbobenzyloxylation using a copper chelate procedure (7 leads to 8). Condensation of 14 and the appropriately protected lactoyl dipeptide 17 and removal of the protecting groups of the resulting 18 afforded 1. Protection of 7 to 22, followed by coupling to glycine via an azide method, gave 25. Derivatization of 25 to 29 and condensation with 17 gave 30, which was deprotected to yield 2. Compound 1 proved to be identical in all respects with the natural product.
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Synthesis and RES-stimulating activity of bacterial cell-wall peptidoglycan peptides related to FK-156. EXPERIENTIA 1982; 38:1101-3. [PMID: 7128758 DOI: 10.1007/bf01955390] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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46
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Synthesis and immunostimulating activity of FK-156 analogues: fatty acid derivatives of N-[N alpha-(gamma-D-glutamyl)-L-lysyl]-D-alanine. Chem Pharm Bull (Tokyo) 1982; 30:3065-8. [PMID: 7139843 DOI: 10.1248/cpb.30.3065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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47
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N2-(gamma-D-Glutamyl)-meso-2(L),2'(D)-diaminopimelic acid as the minimal prerequisite structure of FK-156: its acyl derivatives with potent immunostimulating activity. J Med Chem 1982; 25:335-7. [PMID: 7069711 DOI: 10.1021/jm00346a001] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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48
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Studies on phosphonic acid antibiotics. IV. Synthesis and antibacterial activity of analogs of 3-(N-acetyl-N-hydroxyamino)-propylphosphonic acid (FR-900098). Chem Pharm Bull (Tokyo) 1982; 30:111-8. [PMID: 7083400 DOI: 10.1248/cpb.30.111] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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49
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Abstract
A series of 3-(deacetoxymethyl)-1-oxa-1-dethiacephalosporins (1) bearing the 7-(alpha-alkoxyimono)acyl side chain were synthesized and their antibacterial properties were examined in comparison with that of FK-749 (2). (Z)-2-(Ethoxyimino)-2-(2 aminothiazol-4-yl)acetic acid was found to be a prefered side chain in the 1-oxa series, and the derivative 18b with this side chain proved to be a potential broad-spectrum antibiotic not at all inferior to 2.
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50
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