著者
良永 知義 小川 和夫 若林 久嗣
出版者
The Japanese Society of Fish Pathology
雑誌
魚病研究 (ISSN:0388788X)
巻号頁・発行日
vol.22, no.4, pp.243-251, 1987-12-15 (Released:2009-10-26)
参考文献数
9
被引用文献数
5 18

H.aduncum は海産種であるが, その虫卵は, 淡水中でも2期幼虫に発達し, 孵化した。孵化仔虫は淡水中では生存できないが, 未孵化の2期幼虫がイサザアミ(中間宿主)に取り込まれることで寄生が成立し, その体腔内で3期幼虫に成長した。ワカサギから得た3期幼虫を淡水中のニジマス(実験的終宿主)に投与し, 成虫を得た。以上の結果, 本線虫が淡水中でも生活環を完結できることが明らかとなった。得られた虫体は, 光顕・走査電顕を使って記載し, 各発育段階の識別点を考察した。
著者
馬場 未帆 柴崎 誠次 小川 和雄
出版者
埼玉県農林総合研究センター
雑誌
埼玉県農林総合研究センター研究報告 (ISSN:13467778)
巻号頁・発行日
no.5, pp.101-103, 2005-10

平成11、12年度に県内で生産されている31種類の地域農産物について、アイスクリームヘの加工適性を検討し、越生町特産の梅ジャム、ユズ、岡部町の味来トウモロコシのアイスクリームが商品化された。平成13年度には、地域農産物15種類について、豚肉ソーセージヘの加工適性を検討し、キヤッセ羽生のモロヘイヤソーセージが商品化された。平成15、16年度に商品性を高めた加工食品の開発をテーマとした取り組みでは、高品質肉用鶏タマシャモでソーセージ、燻製、プレスハムなど、新ブランド「愛彩豚」ネギ入りソーセージ、県内産大豆を使用した豆乳、豆腐アイスクリームなどを試作し、商品化を目指している。
著者
加藤 學 岡田 達明 白井 慶 山本 幸生 荒井 武彦 小川 和律 細野 梢 瀧川 覚博 セレーネXRS チーム
出版者
日本惑星科学会
雑誌
日本惑星科学会秋季講演会予稿集
巻号頁・発行日
vol.2004, pp.34-34, 2004

「セレーネ」は、高度約100kmの月極周回軌道から月面全域の探査を行う日本初の総合月ミッションである。蛍光X線分光計(XRS)は両極域を除く月面全域の主要元素組成(Mg, Al, Si, Feなど)を空間分解能約20kmで定量的に決定する。XRS観測及び他の観測機器による元素・鉱物・地形・地質構造などの観測データを相互に利用することによって、月の初期進化過程を探るのが主な科学目標である。本報告では、XRSで導入した新規技術、仕様や機能、機上データ処理方法、地上解析方法について概説する。さらに、地上試験データの特性や性能評価、今後の試験計画、打上後の観測計画について述べる。
著者
小川 和夫 江草 周三
出版者
日本魚病学会
雑誌
魚病研究 (ISSN:0388788X)
巻号頁・発行日
vol.15, no.2, pp.95-99, 1980
被引用文献数
11

1. 1975年2月から1979年6月にかけて,養殖ウナギのGyrodactylus寄生を調査した結果,ニホンウナギからGyrodactylusの得られた池は19(千葉・静岡・徳島・宮崎県),ヨーロッパウナギからGyrodactylusの得られた池は5(静岡・徳島県)であった。2. Gyrodactylusを同定した所,ニホンウナギ寄生種は全てG.nipponensisであり,ヨーロッパウナギ寄生種はG.anguillaeとG.nipponensisであった。3. ニホンウナギとヨーロッパウナギの間には,G.nipponensisに対する感受性に大きな差はないと思われる。最も重篤な寄生例では,ニホンウナギ(体長約45cm)1尾当り約20,000虫体のG.nipponensisが鰓弁から得られた。4. G.anguillaeは日本初報告種であり,種を再記載した。5. 今回得られたG.anguillaeは,ヨーロッパウナギとともにフランスから持ち込まれたものと判断された。我が国のニホンウナギからは,現在までに,G. nipponensisしか見出されず, G. anguillaeが日本に定着したという証拠は得られなかった。ヨーロッパウナギ寄生のG.nipponensisはニホンウナギから伝播していったものと推測される。
著者
山脇 一郎 鈴木 雅博 小川 和男
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.42, no.4, pp.963-971, 1994-04-15 (Released:2008-03-31)
参考文献数
23
被引用文献数
1 1

Piperazinealkanol ester derivatives of indomethacin were prepared and tested for inhibitory activities against 5-lipoxygenase (5-LO) and cyclooxygenase (CO). They inhibited 5-hydroxyeicosatetraenoic acid (5-HETE) formation by the cytosol of guinea pig polymorphonuclear leukocytes and thromboxane B2 (TXB2) formation by washed rabit platelet suspension. Of the test compounds, 2-[4-(2-hydroxyethyl)-1-piperazinyl]-1-phenylethyl 1-(4-chlorobenzoyl)-5-methoxy-2-methyl-3-indolylacetate dimaleate (II-8) was found to be the most active dual inhibitor of 5-LO and CO, and its inhibitory potency was higher than that of 2-[4-(3-hydroxypropyl)-1-piperazinyl]-ethyl [1-(4-chlorobenzoyl)-5-methoxy-2-methyl]-3-indolylacetate (CR-1015) (I), the lead compound.
著者
藤井 澄三 小川 和男 板谷 泰助 伊達 忠正 稲垣 甚一郎 野原 富士夫
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.43, no.3, pp.408-413, 1995-03-15 (Released:2008-03-31)
参考文献数
25
被引用文献数
2 3

A full account is given of the first syntheses of 6-mercaptopurine 7-N-oxide (4) and 6-methylthiopurine 7-N-oxide (5). The synthesis of 4 followed a "phenacylamine route", which started from condensation of 4, 6-dichloro-5-nitropyrimidine (15) with N-(4-methoxybenzyl)phenacylamine to form the phenacylaminopyrimidine derivative (11) and proceeded through conversion into the mercapto derivative, intramolecular cyclization between the NO2 nitrogen atom and the phenacyl carbanion to give 6-mercapto-9-(4-methoxybenzyl)purine 7-N-oxide (12), and removal of the 4-methoxybenzyl group. S-Methylation of 12 and removal of the 4-methoxybenzyl group afforded 5. The location of the oxygen function in 4, 5, and 12 was confirmed by X-ray crystallographic analysis of 5·H2O, which was shown to exist in the N(7)-OH form (19). A UV spectroscopic approach suggested that the neutral species of 4 exists in HO as the N(7)-OH tautomer (21), whereas that of 5 exists as an equilibrated mixture of the N(7)-oxide (5) and the N(7)-OH (19) tautomers. In the in vitro bioassay of antileukemic activity against murine L5178Y cells, the N-oxides 4 and 12 were found to be weakly cytotoxic.
著者
板谷 泰助 小川 和男 松本 浩郎 渡辺 朝子
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.28, no.9, pp.2819-2824, 1980-09-25 (Released:2008-03-31)
参考文献数
11
被引用文献数
7 8

Heating N, N-diethyl-3, 9-dialkyladeninium halides (Ig-j) in aqueous sodium hydroxide gave 1-alkyl-5-(alkylamino)imidazole-4-carboxamides (IV) together with minor amounts of 1-alkyl-5-(alkylamino)imidazole-4-carbonitriles (III), which were converted into IV on further heating. N, N-Dimethyl-3, 9-dialkyladeninium halides (Ia-d) underwent hydrolysis more rapidly to provide IV selectively in 90-94% yields.
著者
藤井 澄三 小川 和男 斎藤 徹 板谷 泰助 伊藤 忠正 岡村 公生
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.43, no.2, pp.321-324, 1995-02-15 (Released:2008-03-31)
参考文献数
26

Oxidation of 1-benzyladenine (12) with m-chloroperoxybenzoic acid in MeOH or in MeOH-0.5 M phosphate buffer (pH 6.6) has been found to afford 1-benzyladenine 7-oxide (13) as the main product. Nonreductive debenzylation of 13 gave adenine 7-oxide (14) in 63% yield. The structure of 13 was unequivocally established by an X-ray crystallographic analysis.
著者
藤井 澄三 小川 和男 斎藤 徹 小林 恵子 板谷 泰助 伊達 忠正 岡村 公生
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.43, no.1, pp.53-62, 1995-01-15 (Released:2008-03-31)
参考文献数
49
被引用文献数
3 4

A detailed account is given of the first unequivocal synthesis of adenine 7-oxide (8). The synthesis started with peroxycarboxylic acid oxidation of 3-benzyladenine (6), readily obtainable from adenine (1) by benzylation, and proceeded through nonreductive debenzylation of the resulting 3-benzyladenine 7-oxide (7). The location of the oxygen function in 7 and 8 was confirmed by their chemical reactions including deamination and methylation and by X-ray crystallographic analysis. A UV spectroscopic approach suggested that the neutral species of 8 exists in H2O as an equilibrated mixture of the N(7)-oxide (8) and N(7)-OH (21) tautomers. Treatment of 6 with 30% aqueous H2O2 in MeOH in the presence of MeCN and KHCO3 at 30°C produced the N(7)-oxide 7 and 7-acetamido-3-benzyladenine (15) in 12% and 1% yields, respectively.
著者
小川 和男 西井 正廣 稲垣 甚一郎 野原 富士夫 斎藤 徹 板谷 泰助 藤井 澄三
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.40, no.5, pp.1315-1317, 1992-05-25 (Released:2008-03-31)
参考文献数
16
被引用文献数
2 7

The synthesis of 8-methylguanine 7-oxide (3) was accomplished via a "phenacylamine route", which started from condensation of α-(4-methoxybenzylamino)propiophenone (6), prepared by coupling of α-bromopropiophenone (4) and 4-methoxybenzylamine (5), with 2-amino-6-chloro-5-nitro-4(3H)-pyrimidinone (7) and proceeded through cyclization of the resulting phenacylaminopyrimidinone (8) and removal of the 4-methoxybenzyl group. The N-oxide 3 and its 9-arylmethyl derivatives 9 and 11 showed only very weak antileukemic activity and no antimicrobial activity.
著者
小川 和男 西井 正廣 稲垣 甚一郎 野原 富士夫 斎藤 徹 板谷 泰助 藤井 澄三
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.40, no.2, pp.343-350, 1992-02-25 (Released:2008-03-31)
参考文献数
47
被引用文献数
8 10

A full account is given of the first chemical synthesis of the antitumor antibiotic guanine 7-oxide (5) and its 9-substituted derivatives (24a-k and 26). Coupling of appropriate primary amines (17a-e, g-k) with phanecyl bromide (16) produced, after treatment with HCl, the corresponding N-substituted phenacylamine hydrochlorides (18a-e, g-k). A similar phenacylation of 4-amino-1-butanol (21) failed to give the desired compound 18f, so that 21 was heated with 2-bromomethyl-2-phenyl-1, 3-dioxolane (20) at 150-155°C for 3h to furnish, after treatment with HCl, the amino ketal hydrochloride 22 in 40% yield. Deketalization of 22 with hot 2N aqueous HCl afforded 18f in 96% yield. Condensations of the free bases, generated in situ from the hydrochlorides 18a-l and 1N aqueous NaOH, with the chloropyrimidinone 6 were effected in aqueous EtOH at the boiling point for 20 min or at 25-30°C for 3-24h, giving the 6-phenacylamino-4-pyrimidinones 19a-l in 54-90% yields. On treatment with 2N aqueous NaOH at room temperature for 10-60 min, the nitropyrimidinones 19a-k cyclized to provide the 9-substituted guanine 7-oxides 24a-k in 61-98% yields. A similar alkali-treatment of 19l failed to yield guanine 7-oxide (5). However, removal of the 9-(arylmethyl) group from 24i-k was effected with conc, H2SO4 at room temperature for 1-3h in the presence of toluene, producing the target N-oxide 5 in 56-89% yields. In the in vitro bioassay of antileukemic activity against murine L5178Y cells, none of the 9-substituted guanine 7-oxides (24a-k and 26) was more effective than the parent, natural N-oxide 5. Within this series, however, the benzyl analogues 24g-k with or without alkoxy functions were more cytotoxic, with IC50's of 13.0-48.0μg/ml, than the alkyl analogues 24a-f.
著者
板谷 泰助 小川 和男
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.33, no.5, pp.1906-1913, 1985-05-25 (Released:2008-03-31)
参考文献数
32
被引用文献数
2 4

Reaction of 1-methyl-5-(methylamino) imidazole-4-carboxamide (6a) with a boiling mixture of ethyl orthoformate and acetic anhydride produced 3, 9-dimethylhypoxanthine (7a) in 60% yield and 1-methyl-5-(N-methylformamido) imidazole-4-carboxamide (5a) in 39% yield. Compound 5a was transformed into 7a by treatment with NaH in 78% yield. Compound 7a was alternatively prepared by cyclocondensation of 6a with diethoxymethane followed by oxidation with I2. The pyrimidine moiety of 7a has been shown to be reactive : 7a affords the 1, 2-dihydro derivative 9 under reductive conditions and undergoes ring opening to 5a in aqueous NaOH. 3-Ethyl-9-methyl-(7b), 3-benzyl-9-methyl-(7c), 9-ethyl-3-methyl-(7d), and 3, 9-dibenzylhypoxanthine (7e) were also prepared from the corresponding carboxamides 6b-e.
著者
藤井 澄三 高田 泰孝 小川 和男 板谷 泰助 松原 聰
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.43, no.2, pp.325-327, 1995-02-15 (Released:2008-03-31)
参考文献数
20
被引用文献数
2

Treatment of N6-benzyladenine (2) with 15% aqueous H2O2 in trifluoroacetic acid at 65-70°C for 1 h was found to give the N(3)-oxide (3) and the N(7)-oxide (4) in 4% and 4% yields, respectively. The structure of 3 was established by its identity with a sample prepared from 6-chloropurine 3-oxide (6) and benzylamine, and the structure of 4 by its identity with a sample obtained from 1-benzyladenine 7-oxide (8) by Dimroth rearrangement. The N-oxides 3 and 4, together with previously reported N6-benzyladenine 1-oxide (1), were tested for cytokinin activity in the tobacco callus bioassay. Each of the three N-oxides was active at 4 μM concentration, being less active than the parent base 2 by a factor of 40.
著者
板谷 泰助 小川 和男 松本 浩郎 渡辺 朝子
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.28, no.8, pp.2522-2527, 1980-08-25 (Released:2008-03-31)
参考文献数
10
被引用文献数
3 5

The reactions of N, N, 9-trialkyladenines (II) with alkyl halides in N, N-dimethylacetamide gave N, N, 3, 9-tetraalkyladeninium halides (IV) in good yields. N, N, 3-Trialkyl-adenines (III) underwent the alkylation more smoothly to provide an alternative synthesis of IV.
著者
小川 和男 西井 正廣 野原 富士夫 斎藤 徹 板谷 泰助 藤井 澄三
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.40, no.3, pp.612-616, 1992-03-25 (Released:2008-03-31)
参考文献数
46
被引用文献数
2 8

A detailed account is given of the first chemical synthesis of hypoxanthine 7-N-oxide (5), which started from coupling of 6-chloro-5-nitro-4(3H)-pyrimidinone (7) with N-(4-methoxybenzyl)phenacylamine, generated in situ from the hydrochloride (8), and proceeded through cyclization of the resulting phenacylaminopyrimidinone (9) and removal of the 4-methoxybenzyl group. The results of catalytic hydrogenolysis, methylation followed by catalytic hydrogenolysis, and rearrangement under acidic conditions of 5 supported the correctness of the assigned structure. An ultraviolet spectroscopic approach suggested that the neutral species of 5 exists in H2O mainly as the N(7)-OH tautomer (21). In the in vitro bioassay of antileukemic activity against murine L5178Y cells, 5 was weakly cytotoxic, with IC50 of 100μg/ml. It did not show any antimicrobial activity even at 1000μg/ml. None of the 9-(4-methoxybenxyl) (11) and O-methyl (12, 13, and 14) derivatives was found to be antiieukemic or antimicrobial.
著者
小川 和男 寺田 忠史 村中 義幸 浜川 寿博 橋本 貞夫 藤井 節郎
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.34, no.8, pp.3252-3266, 1986-08-25 (Released:2008-03-31)
参考文献数
34
被引用文献数
3 7

Many 2-oxoalkyl arenesulfonate derivatives having straight or branched alkyl chains of different lengths, 2-oxoalkyl bis-arenesulfonate derivatives, and alkyl arenesulfonate derivatives having a ketal moiety at the 2-position on the alkyl chain were synthesized, and their esterase-inhibitory activities, as well as hypolipidemic activities, were evaluated.Among these compounds, 1-(2, 4, 6-trimethylbenzenesulfonyloxy)-2-dodecanone (III-1u), and 1-(2, 3, 4, 6-tetramethylbenzenesulfonyloxy)-2-hexanone (III-1w), -2-octanone (III-1x) and -2-decanone (III-1y) exhibited potent esterase-inhibitory activities (IC50=3×10-10, 2×10-10, 2×10<-10> and 3×<-11>M, respectively). However, the sulfonate (XV) having a ketal moiety on the alkyl chain and the bis-sulfonate (XVI) exhibited low inhibitory activities toward esterase in comparison with III and XII. Most of the compounds III and some of the compounds XII exhibited potent hypolipidemic activities corresponding to more than 50% lipid-lowering effect (plasma triglyceride and cholesterol ester) in vivo. The structure-activity relatioinships of these compounds are discussed.