著者

佐伯 清太郎 林 貴昭 浜名 政和

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.32, no.6, pp.2154-2159, 1984-06-25 (Released:2008-03-31)

参考文献数

2

被引用文献数

1 6

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The pseudo-Gomberg reaction of 1-substituted pyrrole derivatives with substituted anilines was examined. Pyrrole derivatives with electron-attracting groups at the 1-position, i.e., ethoxycarbonyl, methanesulfonyl, and benzoyl groups, were found to react smoothly with nitroaniline, chloroaniline and aniline. In each case, 2-arylated pyrrole derivatives were obtained in good or moderate yields.

著者

佐伯 清太郎 近藤 幸子 林 貴昭 浜名 政和

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.32, no.5, pp.1780-1789, 1984-05-25 (Released:2008-03-31)

参考文献数

6

被引用文献数

2 6

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The 1-oxido-4-pyridyl radical generated by the reaction of 4-aminopyridine 1-oxide with amyl nitrite reacted smoothly with aromatic hydrocarbons, including five-membered heterocycles, i.e. thiophene, furan and pyrrole, to give the arylated products when acetic acid was used as the solvent. The relative rates of reaction with the 1-oxido-4-pyridyl radical indicated that this radical is electrophilic, and this finding was supported by a comparison of molecular orbital energy levels. 2-Aminopyridine 1-oxide also undergoes a similar reaction.

著者

Katsuhiro KONNO Katsuji OJIMA Takaaki HAYASHI Miyuki TANABE Hiroaki TAKAYAMA

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.45, no.1, pp.185-188, 1997-01-15 (Released:2008-03-31)

参考文献数

15

被引用文献数

4 6

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Synthesis of a 1α, 25-dihydroxyvitamin D2 analog (3), in which the double bond in the side-chain in replaced by an amide group, is described. Condensation of a carboxylic acid (8) with an amine (6) gave an amide (9), which in turn led to 3 via several steps. The analog (3) could not bind to the chick cytosol vitamin D receptor, which indicated the importance of the hydrophobic interaction of the C(22)-C(23) double bond in 1α, 25-dihydroxyvitamin D2 (2) with the vitamin D receptor.

著者

林 貴昭 尾島 克二 紺野 勝弘 間中 明彦 山口 健太郎 山田 幸子 高山 浩明

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.11, pp.2932-2936, 1992-11-25 (Released:2008-03-31)

参考文献数

16

被引用文献数

5 4

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A new synthesis of 24-fluoro-1α, 25-dihydroxyvitamin D2 (4a) and its 24-epimer (4b) is described. Starting with 1α, 3β-bis[(tert-butyldimethylsilyl)oxy]-24-norchol-5, 7-dien-23-al (5), a mixture of 4a and 4b was obtained in 3% overall yield in 6 steps. Reversed-phase HPLC cleanly separated the mixture into the two C-24 epimers. The X-ray crystallographic analysis of the 4-phenyl-1, 2, 4-triazoline-3, 5-dione (PTAD) adduct 11b, which was derived from the ester 6, unambiguously determined the configuration at C-24 of this compound. Based on the X-ray analysis, the configuration at C-24 of 4a and 4b was unequivocally determined.

著者

紺野 勝弘 尾島 克二 林 貴昭 高山 浩明

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.1120-1124, 1992-05-25 (Released:2008-03-31)

参考文献数

17

被引用文献数

15 24

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An alternative synthesis of the title compound 2, a highly potent analog of 1α, 25-dihydroxyvitamin D3 (1), is described. Starting with 1α, 3β-bis[(tert-butyldimethylsilyl)oxy]androst-5-ene (8), 2 was obtained in 3.8% total yield through 10 steps. This method provides compound 2 in much higher yield than that reported previously.

著者

Toshio Honda Hitoshi Wakabayashi Kazuo Kanai

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.50, no.2, pp.307-308, 2002 (Released:2002-06-30)

参考文献数

23

被引用文献数

33 44

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Chiral β-amino esters are synthesized in one-pot from three components, amines, aldehydes, and ethyl bromoacetate, under the rhodium-catalyzed Reformatsky-type reaction condition, where complete diastereoselection is achieved in the nucleophilic addition step of ethyl bromoacetate to the imines prepared in situ.

著者

Koichiro Nishimura Toshikazu Saitoh

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.64, no.7, pp.1043-1046, 2016-07-01 (Released:2016-07-01)

参考文献数

3

被引用文献数

1 1

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The 5-bromo-2-methylamino-8-methoxyquinazoline (1) is a key intermediate in our drug discoveries. Compound 1 bears a monomethylamino group at the 2-position of the quinazoline ring. This compound has been synthesized from 6-bromo-2-fluoro-3-methoxybenzaldehyde by a synthetic route including a total of four isolation processes in the medicinal chemistry laboratories. Our process chemistry laboratories successfully improved the original synthetic route by introducing the telescoping process. We successfully reduced the isolation processes from four to two processes by using information extracted through design of experiment. The total yield of compound 1 increased by 18%, while maintaining the purity of compound 1 of the original synthetic route. Accordingly, we contributed to the quick supply of compound 1 to the medicinal laboratories.

著者

廣橋 満 木戸 勝 山本 栄仁 小島 裕 實川 浩一郎 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.41, no.9, pp.1498-1506, 1993-09-15 (Released:2008-03-31)

参考文献数

23

被引用文献数

6 10

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The reactivities of 5-fluorouracil (5-FUra) degradation inhibitors, 2, 4- (2) and 2, 6-dihydroxypyridines (3), were investigated. Acylation of 2 and 2, 4-bis(trimethylsilyloxy)pyridines with equimolar amounts of acid chlorides preferentially occurred at the 4-OH and 2-OH positions, respectively, and the structure of monobenzoylated 5-chloro-2, 4-dihydroxypyridine (2b) was determined as 4-benzoyloxy-5-chloro-2-pyridone (5b) by X-ray crystallo-graphic analysis. Compounds 2 and 3, as well as the N-2-tetrahydrofuryl (11), N-alkyl (12), and N-carbamoyl (14) derivatives of 2, exhibit dynamic keto-enol tautomerism. The acyl derivatives of these pyridines are labile and are thought to be active esters. Monoacyl ester derivatives of these pyridines were combined with 5-FUra analogs to develop novel antitumor agents containing an inhibitor of 5-FUra degradation. One of them, 3-[3-(6-benzoyloxy-3-cyano-2-pyridyloxycarbonyl)benzoyl]-1-ethoxymethyl-5-fluorouracil (BOF-A2) (22b), was the most effective and is currently undergoing late phase-II clinical trials.

著者

尾崎 庄一郎 渡辺 裕 星子 知範 水野 晴雄 石川 勝敏 森 春樹

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.32, no.2, pp.733-738, 1984-02-25 (Released:2008-03-31)

参考文献数

16

被引用文献数

20 24

---

The toxicity and tumor affinity of 5-fluorouracil (1) have been modified by the introduction of acyloxyalkyl group (s) at the 1-, 3- or 1, 3-position (s) of 1. 1-Acyloxyalkyl-5-fluorouracil (3), 3-acyloxyalkyl-5-fluorouracil (4) and 1, 3-bis (acyloxyalkyl)-5-fluorouracil (5) were obtained by three methods : i) the reaction of α-chloroalkyl carboxylate (2) with 1, ii) the reaction of alkylidene diacylate with 2, 4-bis (trimethylsilyloxy)-5-fluoropyrimidine, iii) partial hydrolysis of 5. Compounds 3, 4 and 5 showed antitumor activity.

著者

上田 修一 武田 節夫 山脇 一郎 山下 純一 安本 三治 橋本 貞夫

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.30, no.1, pp.125-131, 1982-01-25 (Released:2008-03-31)

参考文献数

20

被引用文献数

5 8

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A hydroxylated metabolite of 1-(tetrahydro-2-furanyl)-5-fluorouracil (FT), 1-(trans-3-hydroxytetrahydro-2-furanyl)-5-fluorouracil (trans-3'-OH-FT, VIII) and its isomer, 1-(cis-3-hydroxytetrahydro-2-furanyl)-5-fluorouracil (cis-3'-OH-FT, VI), were synthesized and isolated at high purity. As compounds related to FT metabolites, 2, 3'-anhydro-1-(cis-3-hydroxytetrahydro-2-furanyl)-5-fluorouracil (2, 3'-anhydro-FT, V), 1-(2, 5-dihydro-2-furanyl)-5-fluorouracil (3', 4'-dehydro-FT, XII) and 1-(5-acetoxytetrahydro-2-furanyl)-5-fluorouracil (5'-AcO-FT, XI) were also synthesized. The antitumor activities of these compounds against sarcoma 180 and L 1210 were examined. The activities of cis-3'-OH-FT (VI) and 2, 3'-anhydro-FT (V) were found to be lower than that of FT. The activity of 5'-AcO-FT (XI) was the same as that of FT. 3', 4'-Dehydro-FT (XII) showed much greater activity than FT.

著者

JUN-ICHI YAMASHITA SETSUO TAKEDA HIROSHI MATSUMOTO TADAFUMI TERADA NORIO UNEMI MITSUGI YASUMOTO

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.35, no.5, pp.2090-2094, 1987-05-25 (Released:2009-10-19)

参考文献数

14

被引用文献数

6 6

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Various O-acyl and N-acyl derivatives of 2'-deoxy-5-trifluoromethyluridine (F3Thd) were synthesized; namely 5'-O-acyl, 3', 5'-di-O-acyl, N3-acyl, 3', 5'-di-O-acetyl-N3-acyl, 3', 5'-di-O-carbamoyl and 3', 5'-di-O-ethoxycarbonyl compounds. 5'-O-Acyl derivatives of 2'-deoxy-5-trifluoromethylcytidine were also synthesized.The antitumor activities of these compounds against sarcoma 180 were examined by oral administration to mice. Among the 5'-and 3', 5'-diester compounds with aliphatic acids, the 5'-O-hexanoyl compound showed the highest activity. Full protection of the sugar moiety with aroyl or carbamoyl groups considerably decreased the activities, and those of the 3', 5'-di-O-m-fluorobenzoyl and 3, 5'-di-O-butylcarbamoyl compounds were the smallest. N3-Benzoyl compounds were slightly more effective than F3Thd but none of them showed higher activity than the effective O-acyl compounds. In the case of 5'-O-acylates of 2'-deoxy-5-trifluoromethylcytidine, the 5'-O-benzoyl compound showed the highest activity.

著者

Atsuhiko UEMURA Yukio TADA Setsuo TAKEDA Junji UCHIDA Jun-ichi YAMASHITA

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.44, no.1, pp.150-155, 1996-01-15 (Released:2008-03-31)

参考文献数

20

被引用文献数

3 3

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Various O-alkyl derivatives of 2'-deoxy-5-fluorouridine (FUdR) were synthesized and their antitumor activities in mice bearing sarcoma 180 (s.c.-p.o.) were evaluated in terms of the ED50 values (mg/kg/d). Most of these compounds were superior to FUdR in antitumor activity. In particular, the antitumor activity of 3'-O-(p-chloro-benzyl)-FUdR (3e) (ED50 =0.87mg/kg/d) was as much as 100 times that of FUdR (ED50=84mg/kg/d). Further, various 5'-O-aminoacyl derivatives of 3e were synthesized and evaluated in terms of ED50 value and therapeutic index (T.I.). Both the ED50 value (0.41mg/kg/d) and the T.I. (4.18) of 3'-O-(p-chlorobenzyl)-5'-O-glycyl-FUdR hydrochloride (6a) were significantly improved, compared with those of 3e and FUdR. FUdR plasma concentration after a single p.o. dosing of 6a was maintained for as long as 24h.

著者

尾崎 庄一郎 秋山 隆彦 池 祥雅 森 春樹 星 昭夫

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.37, no.12, pp.3405-3408, 1989-12-25 (Released:2008-03-31)

参考文献数

13

被引用文献数

14 15

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With the aim of diminishing the toxicity of 5-fluorouridine (1) and obtaining biologically active derivatives of 1, various kinds of 5'-O-acyl-8-fluorouridines 2 were synthesized. The antitumor activity of the compounds against L-1210 leukemia in mice was examined. The 5'-O-heptanoyl derivative 2h showed the highest antitumor activity.

著者

小林 義郎 熊懐 稜丸 大沢 昭緒 山田 猛

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.20, no.8, pp.1839, 1972-08-25 (Released:2008-03-31)

被引用文献数

15 20

著者

小林 義郎 熊懐 稜丸 大沢 昭緒 村上 慎一 中野 隆治

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.26, no.4, pp.1247-1249, 1978-04-25 (Released:2008-03-31)

被引用文献数

31 45

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Photochemical trifluoromethylation of pyridine gave a mixture of three (trifluoromethyl) pyridines. Pyrrole and N-methylpyrrole were trifluoromethylated in α-position. Benzene gave very low yield of benzotrifluoride.

著者

小林 義郎 熊懐 稜丸 佐藤 進 原 伸祀 近見 永一

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.18, no.11, pp.2334-2339, 1970-11-25 (Released:2008-03-31)

被引用文献数

39 65

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Trifluoromethyl iodide reacts with aryl halide in the presence of copper powder to give aryltrifluoromethane derivatives in a fairly good yield. This newly observed reaction is applicable to heterocyclic halides as well as benzene derivatives. Activities of halides are in the following order of readiness : iodide>bromide>chloride. Effects of solvents and natures of copper were examined.

著者

Nanami Shigetomi Kenta Kamiya Toru Takamori Naoki Yoshimura Sayaka Ozawa Keiichi Hirono Fukiko Ichida Masato Taguchi

出版者

The Pharmaceutical Society of Japan

雑誌

Biological and Pharmaceutical Bulletin (ISSN:09186158)

巻号頁・発行日

vol.42, no.1, pp.110-115, 2019-01-01 (Released:2019-01-01)

参考文献数

23

被引用文献数

2

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The purpose of this study was to determine the serum protein binding of tadalafil in children with protein-losing enteropathy (PLE) and to evaluate the specific binding of the drug to human serum-derived proteins in vitro. Seventeen serum samples from two PLE patients used after biochemical tests were collected, and the unbound fraction of tadalafil was determined by an ultrafiltration method. The serum albumin concentrations observed in patients #1 and #2 were 2.4–4.2 and 2.9–3.5 g/dL, respectively. The ranges of unbound fraction of tadalafil in patients #1 and #2 were 3.9–13 and 5.0–7.0%, respectively. This suggested that serum albumin was at least a binding carrier for tadalafil because the unbound fraction of tadalafil and serum albumin were slightly correlated. The unbound fraction of tadalafil at the total concentration of 300 ng/mL was negatively dependent on the serum albumin concentration (range: 1.0–5.0 g/dL) in vitro. In the presence of albumin, the additive effect of γ-globulin on the unbound fraction of tadalafil was marginal, but the addition of α1-acid glycoprotein to test samples decreased the unbound fraction of the drug. The decrease in the unbound fraction of tadalafil was greater at low albumin levels (2 g/dL). The addition of lipoprotein to test samples also decreased the unbound fraction of tadalafil, suggesting that lipoprotein was also a binding carrier of the drug. These results suggested that the disposition and/or response to tadalafil in PLE patients was altered by the change in protein bindings of the drug.

著者

織田 範一 小林 和弘 植田 泰誠 伊藤 磯雄

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.26, no.8, pp.2578-2581, 1978-08-25 (Released:2008-03-31)

被引用文献数

1 3

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Diels-Alder reaction of 5-nitro-1, 4-naphthoquinone (1) and unsymmetrical butadienes was carried out. Reaction of 1 and 2-methyl-1, 3-butadiene gave 1, 4, 4a, 9a-tetrahydro-2-methyl-5-nitro-anthraquinone (2) and its 3-methyl analogue (3) at the ratio of 9.2 : 1. Reaction of 1 and 1, 3-pentadiene gave 1, 4, 4a, 9a-tetrahydro-1-methyl-8-nitroanthraquinone (8) and its 5-nitro analogue (9) at the ratio of 10 : 7. Their structures have been determined by aromatization to methyl-nitroanthraquinones.

著者

梅山 秀明

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.27, no.12, pp.3180-3182, 1979-12-25 (Released:2008-03-31)

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Closed shell LCAO-SCF-MO calculations were carried out for the chloride anion cryptate, which is of interest in connection with organic anion receptors and carriers. In the Cl- cryptate of [(C9H18)3(NH)2Cl]+Cl-, Cl- is encapsulated in the host molecule. Since the positions of the two protons bonded to the two nitrogens of the host molecule were not determined in the reported X-ray diffraction analyses, the positions of the two protons in the inclusion complex were decided by calculation using the ab initio molecular orbital method. A structure N+-H…Cl-…H-N+ in which Cl- is in between the two nitrogens was most stable at values of γ(NN) less than 7.0 Å. The structure N+-H…Cl-…H-N+ was most stable at γ(NN)=6.023 Å. In the most stable structure, the two protons are covalently bonded to the two nitrogens. The structure obtained by geometry optimization for the two ammonium ions and Cl- was similar to that determined by X-ray diffraction analysis.

著者

山田 幸子 大森 正幸 高山 浩明

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.27, no.12, pp.3196-3198, 1979-12-25 (Released:2008-03-31)

被引用文献数

11 14

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24, 24-Difluoro-1α, 25-dihydroxyvitamin D3 (1) has been synthesized from 24, 24-difluoro-5β-cholestane-3α, 25-diol (2) as an antimetabolic analogue of 1α, 25-dihydroxyvitamin D3 to study the role of the 24-hydroxylation in the metabolism of vitamin D3.