著者

Takuya Izawa Koji Nakayama Noritaka Uchida Kazuhiro Nojima

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

pp.c17-00938, (Released:2018-02-22)

参考文献数

30

被引用文献数

13

---

Dehydroacetic acid (1) was found to induce photoisomerization, converting aldrin (3) and dieldrin (4) into photoaldrin (5) and photodieldrin (6), respectively, not only when irradiated with artificial light at wavelengths longer than 290 nm in air but also when exposed to sunlight in air. By contrast, sodium dehydroacetate (2) induced both photoisomerization, primarily converting 3 to 5 and photoepoxidation, partially forming 6. Thus, because 2 is usually used as a water-soluble antiseptic, photo-erethism might occur due to the isomerization and epoxidation properties of this compound. The difference between the photoreactivity of 1 and that of 2 might be attributed to the spin density of the odd electron on the carbon atom in the respective radicals that were formed after photo-excited 1 and 2 caused H-abstraction.

著者

Hideyuki Konishi

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.66, no.1, pp.1-19, 2018-01-01 (Released:2018-01-01)

参考文献数

110

被引用文献数

15

---

The use of toxic gas surrogates in organic reactions instead of the gas itself contributes to enhancing the safety, practicality, and efficiency of the reactions involved. Our efforts toward the creation of toxic gas surrogates and the development of a series of catalytic reactions using these surrogates are described. Improvements in substrate scope during the hydroesterification of alkenes using formates facilitated by the Ru–imidazole catalyst system provided the opportunity to discover that phenyl formate is a useful carbon monoxide (CO) surrogate for the generation of CO and phenol under weakly basic conditions. This discovery triggered the development of highly reactive but stable CO surrogates and a variety of Pd-catalyzed carbonylative transformations. N-Formylsaccharin facilitated the use of additional nucleophiles in carbonylation reactions that provided access to a variety of carbonyl compounds. Detailed experimental and theoretical mechanistic studies into the generation of CO from phenyl formate suggest that CO generation proceeds via a concerted E2 α-elimination. Furthermore, a known surrogate of sulfur dioxide was applied for the first time to the selective syntheses of cyclic sulfonamides and sulfinamides, confirming that the surrogate operates as an “S=O” source. Notably, the reactions described herein are scalable and can be performed without the use of external toxic gases and specialized reaction vessels; they are easy and simple to perform and demonstrate enormous potential for industrial application.

著者

Chihiro Tsukano Satoshi Suetsugu Nobusuke Muto Yoshiji Takemoto

出版者

The Pharmaceutical Society of Japan

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.65, no.12, pp.1167-1174, 2017-12-01 (Released:2017-12-01)

参考文献数

43

---

Tetrahydrobiphenylene consists of cyclobutene fused with benzene and cyclohexene rings. In this paper, a direct method for synthesizing tetrahydrobiphenylenes based on a palladium (Pd)(0)-catalyzed C(sp2)–H functionalization was investigated. The developed method was applied to the synthesis of several tetrahydrobiphenylenes having an oxygen functionality at the ring juncture. The derivatization of a tetrahydrobiphenylene is also reported.

著者

Kazuhiro Morisaki Yuta Kondo Masanao Sawa Hiroyuki Morimoto Takashi Ohshima

出版者

公益社団法人日本薬学会

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.65, no.11, pp.1089-1092, 2017-11-01 (Released:2017-11-01)

参考文献数

20

被引用文献数

1

---

This note describes the construction of tetrasubstituted carbon stereocenters via palladium-catalyzed allylation of sp3 C–H bonds of 2,2,2-trifluoroethylamine derivatives. The presence of 2-pyridyl group of the imines derived from 1-substituted-2,2,2-trifluoroethylamine was key to promoting the reaction efficiently, allowing an access to a variety of 1-allylated 2,2,2-trifluoroethylamine derivatives with tetrasubstituted carbon stereocenters.

著者

Yusai Ito Naoki Harikai Kyoko Ishizuki Kazufusa Shinomiya Naoki Sugimoto Hiroshi Akiyama

出版者

公益社団法人日本薬学会

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

pp.c17-00404, (Released:2017-07-01)

参考文献数

18

被引用文献数

4

---

Cochineal extract prepared from the scale insect Dactylopus coccus (American cochineal) has been used as a natural red dye for food, cosmetics, and pharmaceuticals. The major pigment in cochineal extract is carminic acid (CA), an anthraquinone glucoside, and several minor pigments have been previously reported. Our investigation aimed at establishing the safety of cochineal dye products using UPLC-PDA-ESI-TOF/MS found an unknown minor pigment, spiroketalcarminic acid (1), in three commercial cochineal extract samples; cochineal extract used in food additives, carmine that is an aluminum salt of cochineal extract used as natural dye, and a research reagent of CA. The purification of 1 from cochineal extract involved sequential chromatographic techniques, including preparative reversed-phase HPLC. 2D NMR and mass analyses established the structure of 1 to be a novel anthraquinone with an unusual 6,5-spiroketal system instead of the C-glucosyl moiety of CA. The absolute stereochemistry of the spiroketal moiety in 1 was determined by NOESY correlations and optical rotation. No data corresponding to 1 had previously been reported for extracts of dried cochineal insects and traditional art products dyed with cochineal extract, indicating that 1 is likely produced during the preparation of commercial cochineal extract.

著者

野中 源一郎 松本 陽子 西岡 五夫

出版者

公益社団法人日本薬学会

雑誌

Chemical & pharmaceutical bulletin (ISSN:00092363)

巻号頁・発行日

vol.29, no.4, pp.1184-1187, 1981-04-25

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A novel hydrolyzable tannin named trapain has been isolated from Trapa japonica FLEROV. (Oenotheraceae), and the structure has been established as II on the basis of the spectroscopic and chemical evidences.

著者

三橋 博 金子 光 佐々木 希吉

出版者

公益社団法人 日本薬学会

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.10, no.11, pp.1119-1122, 1962

被引用文献数

1

---

It was shown that DL-phenylalanine [2-<SUP>14</SUP>C] was incorporated into C-3 of two kinds of isoflavone, formononetin and genistein, by <I>Trifolium pratense</I> sp., <I>in vivo</I>.<BR>These results indicate that the aryl group undergoes a migration within the C<SUB>6</SUB>-C-C-C fragment, and this observation agrees with Grisebach's experimental data.

著者

梅澤 勲 野澤 雅子 南雲 紳史 秋田 弘幸

出版者

公益社団法人日本薬学会

雑誌

Chemical & pharmaceutical bulletin (ISSN:00092363)

巻号頁・発行日

vol.43, no.7, pp.1111-1118, 1995-07-15

被引用文献数

1

---

Three kinds of oudemansin X, (-)-1,(+)-1 and (±)-1,were totally synthesized. The key point in the present chiral synthesis was the enantioselective acetylation of the racemic alcohols, (±)-5 and (±)-8,using lipase in an organic solvent. The synthetic (-)-1 was found to exhibit strong antifungal activity against several molds and yeasts.

著者

Shinya Yoshida Yasuko Obata Yoshinori Onuki Shunichi Utsumi Noboru Ohta Hiroshi Takahashi Kozo Takayama

出版者

公益社団法人日本薬学会

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.65, no.2, pp.134-142, 2017-02-01 (Released:2017-02-01)

参考文献数

33

被引用文献数

4

---

l-Menthol increases drug partitioning on the surface of skin, diffusion of drugs in the skin, and lipid fluidity in the stratum corneum and alters the rigidly arranged lipid structure of intercellular lipids. However, l-menthol is a solid at room temperature, and it is difficult to determine the effects of l-menthol alone. In this study, we vaporized l-menthol in order to avoid the effects of solvents. The vaporized l-menthol was applied to the stratum corneum or lipid models comprising composed of ceramides (CER) [EOS], the longest lipid acyl chain of the ceramides in the stratum corneum lipids that is associated with the barrier function of the skin; CER [NS], the shorter lipid acyl chain of the ceramides, and the most components in the stratum corneum of the intercellular lipids that is associated with water retention in the intercellular lipid structure of the stratum corneum; cholesterol; and palmitic acid. Synchrotron X-ray diffraction, differential scanning calorimetry, and attenuated total reflection Fourier transform infrared spectroscopy analyses revealed that the lipid models were composed of hexagonal packing and orthorhombic packing structures of different lamellar periods. Taken together, our results revealed that l-menthol strongly affected the lipid model composed of CER [EOS]. Therefore, l-menthol facilitated the permeation of drugs through the skin by liquid crystallization of the longer lamellar structure. Importantly, these simple lipid models are useful for investigating microstructure of the intercellular lipids in the stratum corneum.

著者

Sayuko Shiraishi Tamami Haraguchi Saki Nakamura Honami Kojima Ikuo Kawasaki Miyako Yoshida Takahiro Uchida

出版者

公益社団法人日本薬学会

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.65, no.2, pp.151-156, 2017-02-01 (Released:2017-02-01)

参考文献数

31

被引用文献数

9

---

The purpose of the study was to evaluate suppression of the bitterness intensity of bitter basic drugs by chlorogenic acid (CGA) using the artificial taste sensor and human gustatory sensation testing and to investigate the mechanism underlying bitterness suppression using 1H-NMR. Diphenhydramine hydrocholoride (DPH) was the bitter basic drug used in the study. Quinic acid (QNA) and caffeic acid (CFA) together form CGA. Although all three acids suppressed the bitterness intensity of DPH in a dose-dependent manner as determined by the taste sensor and in gustatory sensation tests, CFA was less effective than either CGA or QNA. Data from 1H-NMR spectroscopic analysis of mixtures of the three acids with DPH suggest that the carboxyl group, which is present in both QNA and CGA but not CFA, interact with the amine group of DPH. This study showed that the bitterness intensity of DPH was suppressed by QNA and CGA through a direct electrostatic interaction with DPH as confirmed in 1H-NMR spectroscopic analysis. CGA and QNA may therefore be useful bitterness-masking agents for the basic drug DPH.

著者

中川 昌子 木内 みどり 小尾 道子 殿塚 雅克 小林 和美 日野 亨 舟越 和久

出版者

公益社団法人 日本薬学会

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.23, no.2, pp.304-312, 1975

被引用文献数

17

---

The reaction of tryptamine with δ-valerolactone in tetralin gave δ-hydroxyamide (3) as the main product and the lactam (4) as the minor product. However, the reaction of 5, 6-dihydro-2-pyrone with tryptamine or aniline afforded a mixture of the corresponding αβ- and βγ-unsaturated lactams, whereas, 2-pyrone did not react with either tryptamine or aniline to give the corresponding pyridone. Cyclization of 3 or 4 by Bischler-Napieralski reaction and followed NaBH<SUB>4</SUB> reduction provided a convement synthesis of 1, 2, 3, 4, 6, 7, 12, 12b-octahydroindolo [2, 3-α] quinolizine (23).

著者

Zhigang Yang Ryo Nakabayashi Tetsuya Mori Satoshi Takamatsu Susumu Kitanaka Kazuki Saito

出版者

公益社団法人日本薬学会

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.64, no.7, pp.952-956, 2016-07-01 (Released:2016-07-01)

参考文献数

34

被引用文献数

17

---

Oryza sativa L. (rice) is an important staple crop across the world. In the previous study, we identified 36 specialized (secondary) metabolites including 28 flavonoids. In the present study, a metabolome analysis using liquid chromatography-mass spectrometry was conducted on the leaf, bran, and brown and polished rice grains to better understand the distribution of these metabolites. Principal component analysis using the metabolome data clearly characterized the accumulation patterns of the metabolites. Flavonoids, e.g., tricin, tricin 7-O-rutinoside, and tricin 7-O-β-D-glucopyranoside, were mainly present in the leaf and bran but not in the polished grain. In addition, anti-inflammatory and anti-oxidant activity of the metabolites were assayed in vitro. Tricin 4′-O-(erythro-β-guaiacylglyceryl)ether and isoscoparin 2″-O-(6‴-(E)-feruloyl)-glucopyranoside showed the strongest activity for inhibiting nitric oxide (NO) production and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging, respectively.

著者

山下 純一 松本 宏 小林 和弘 野口 和春 安本 三治 上田 亨

出版者

公益社団法人日本薬学会

雑誌

Chemical & pharmaceutical bulletin (ISSN:00092363)

巻号頁・発行日

vol.37, no.9, pp.2287-2292, 1989-09-25

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A practical synthesis of 3'-O-benzyl-2'-deoxy-5-trifluoromethyluridine (1), a candidate antitumor agent for clinical testing, was developed from 2'-deoxy-5-iodouridine (3). Benzylation of 2'-deoxy-5-iodo-5'-O-trityluridine (14) with benzyl bromide and sodium hydride in tetrahydrofuran gave the 3'-O-derivative (16). Benzoylation of 16 afforded the N^3-benzoyl derivative (17). Coupling of 17 with trifluoromethylcopper, prepared from bromotrifluoromethane and copper powder in the presence of 4-dimethylaminopyridine, gave the 5-trifluoromethyl derivative (19) minimally contaminated with the 5-pentafluoroethyl compound. Deprotection of 19 furnished 1.

著者

Megumi Fujita Tomohiko Ueda Tetsurou Handa

出版者

公益社団法人日本薬学会

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.57, no.10, pp.1096-1099, 2009-10-01 (Released:2009-10-03)

参考文献数

12

被引用文献数

4 12

---

Formaldehyde is a well-known air impurity. The possibility was investigated in this study that pharmaceutical excipients commonly used in oral solid dosage forms might also be sources of formaldehyde. The results showed that formaldehyde is generated by the excipients lactose, D-mannitol, microcrystalline cellulose, low-substituted hydroxypropylcellulose, magnesium stearate and light anhydrous silicic acid. Since the quality and safety of pharmaceutical products can be significantly affected by the presence of formaldehyde, various amines were then investigated for their ability to decrease levels of formaldehyde using an aqueous solution system. Of the four amines investigated, only meglumine proved capable of reducing formaldehyde levels. The reaction product between formaldehyde and meglumine was obtained by fractionation using the preparative HPLC system and the structure was clarified by 1H-, 13C-NMR, various types of two-dimensional NMR and mass spectroscopy. The reaction product was determined to be a compound with a 1,3-oxazinane skeleton and containing one more carbon than meglumine. It was presumed that formaldehyde reacted with the secondary amino group in meglumine to form the reaction product via an iminium salt intermediate by cyclization. As meglumine is permitted to be used as a pharmaceutical excipient in both oral and parenteral dosage forms by regulations worldwide, the addition of meglumine to pharmaceutical products can be expected to contribute to the stabilization of many drug substances.

著者

寺田 忠史 山田 雄次 野村 誠 藤本 勝彦 野村 誠 山下 純一 / 小武内 尚 武田 節夫 南 慶典 吉田 健一郎 山口 秀夫

出版者

公益社団法人日本薬学会

雑誌

CHEMICAL & PHARMACEUTICAL BULLETIN (ISSN:00092363)

巻号頁・発行日

vol.41, no.5, pp.907-912, 1993

被引用文献数

10

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1-&beta;-Alkyl derivatives of 1-desoxypodophyllotoxin were synthesized, and their cytotoxicity and inhibitory effects on DNA topoisomerase II (Topo-II) and tubulin polymerization were examined.The reaction of epipodophyllotoxin derivatives (1a-c) with trimethylallylsilane in the presence of boron trifluoride etherate gave 1-&beta;-allylated compounds (2a-c). The regiochemistry and the &beta;-stereochemistry of the 1-allyl group were confirmed by comparison of the <SUP>13</SUP>C-NMR spectra and NOE's (%) of 2c, podophyllotoxin (POD) and epipodophyllotoxin (1b). 1-&beta;-Alkyl-1-desoxypodophyllotoxin derivatives (3-8) were prepared from 2b.None of the tested compounds (3-8) showed any inhibitory effect on Topo-II. 1-&beta;-Propyl compound (3) and its 4'-demethyl compound (4) inhibited tubulin polymerization and the cytotoxicities of these compounds were equal to that of VP-16. 1-&beta;-(2, 3-Dihydroxypropyl) compounds (5 and 8) and 1-&beta;-(2, 3-diacetoxypropyl) compounds (6 and 7)showed no inhibitory effect on tubulin polymerization. Although 5 did not inhibit either Topo-II activity or tubulin polymerization, it showed a high cytotoxicity against sarcoma 180.

著者

寺田 忠史 藤本 勝彦 野村 誠 山下 純一 小武内 尚 武田 節夫 / 山田 雄次 山口 秀夫 山口 秀夫

出版者

公益社団法人日本薬学会

雑誌

CHEMICAL & PHARMACEUTICAL BULLETIN (ISSN:00092363)

巻号頁・発行日

vol.40, no.10, pp.2720-2727, 1992

被引用文献数

27

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Various podophyllotoxin derivatives from desoxypodophyllotoxin (DPT) were synthesized to examine the structural relationships between the biological significance (cytotoxic effect, effects on DNA topoisomerase II and tubulin polymerization) in vitro and antitumor activity in vivo (L 1210).An intact 6, 7-methylenedioxy group of DPT is necessary to inhibit tubulin polymerization and topoisomerase II. 4'-Phenolic hydroxyl group of DPT is essential to inhibit DNA topoisomerase II and the inhibitory effect on DNA topoisomerase II contributes to a high cytotoxicity.The introduction of an aminoalkoxy group at 1-position of DPT enhances the inhibitory activity against DNA topoisomerase II and cytotoxic effect, causing the inhibitory activity against tubulin polymerization to disappear. The results of antitumor test in mice bearing L 1210 on podophyllotoxin derivatives suggest the following : 1) the strong cytotoxic effect itself is not a good indication of antitumor activity in vivo as long as it is associated with inhibition of tubulin polymerization. DNA topoisomerase II inhibitory effect contributes to an antitumor activity in vivo; 2) detailed measurements of cytotoxicity and inhibition on DNA topoisomerase II and tubulin polymerization in vitro are necessary to evaluate podophyllotoxin derivatives.

著者

荒牧 繁一郎 富安 温子 吉村 英敏 塚元 久雄

出版者

公益社団法人日本薬学会

雑誌

Chemical and Pharmaceutical Bulletin (ISSN:00092363)

巻号頁・発行日

vol.16, no.5, pp.822-826, 1968-05-25 (Released:2008-03-31)

被引用文献数

67 85

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A new solvent system benzene-n-hexane-diethylamine (25 : 10 : 1), was found to show a good separation of cannabidiol, tetrahydrocannabinol and cannabinol in hemp resin by thin-layer chromatography, in which Rf-values of three constituents were 0.45, 0.35 and 0.25, respectively. Furthermore, the same solvent system was successfully applied to silica gel column chromatography for isolation of three constituents of hemp resin. Using cocaine hydrochloride as an internal standard of gas chromatography, relative retention times of cannabidiol, tetrahydrocannabinol and cannabinol were calculated to be 1.76, 2.34 and 2.88, respectively. Six kinds of hemps grown in India, U.S.A. and Japan, were quantitatively analyzed using gas chromatography, and against a common opinion, Japanese hemps were found to contain considerable amounts of tetrahydrocannabinol, a physiologically active constituent.

著者

野中 源一郎 原田 美沙子 西岡 五夫

出版者

公益社団法人日本薬学会

雑誌

Chemical & pharmaceutical bulletin (ISSN:00092363)

巻号頁・発行日

vol.28, no.2, pp.685-687, 1980-02-25

被引用文献数

2

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A new ellagitannin, eugeniin was isolated from cloves, the dried flower buds of Eugenia caryophyllata THUNB., and the structure was determined to be 1,2,3-trigalloyl 4,6-hexahydroxydiphenoyl β-D-glucopyranose.

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

公益社団法人日本薬学会

雑誌

CHEMICAL & PHARMACEUTICAL BULLETIN (ISSN:00092363)

巻号頁・発行日

vol.30, no.1, pp.125-131, 1982

被引用文献数

8

---

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

山下 純一 山脇 一郎 上田 修一 安本 三治 采見 憲男 橋本 貞夫

出版者

公益社団法人日本薬学会

雑誌

Chemical & pharmaceutical bulletin (ISSN:00092363)

巻号頁・発行日

vol.30, no.12, pp.4258-4267, 1982-12-25

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Six types of 5-fluorouracil (5-FU) derivatives were synthesized ; namely, 2,4-di-O-substituted, 2-O-substituted, 4-O-substituted, 1,3-disubstituted, 1-substituted and 3-substituted compounds. After oral administration of these compounds to rats, the blood levels of 5-FU were determined. Among O-substituted derivatives, a 4-O-substituted derivative was most easily activated to 5-FU and 2-O-substituted derivatives were next most easily activated. Among N-substituted derivatives, acyl and sulfonyl derivatives showed the highest 5-FU releasing abilities and 1-alkoxymethyl substituted derivatives showed low ability. N-Alkyl substituted derivatives were not activated to 5-FU. Several compounds which gave higher blood levels of 5-FU than that obtained with 1-(tetrahydro-2-furyl)-5-fluorouracil (Thf-FU), as well as same related compounds, were selected and their antitumor activities were examined. The 2-O-substituted derivatives, 2-butoxy-5-fluoro-4 (1H)-pyrimidone (11) and 2-benzyloxy-5-fluoro-4 (1H)-pyrimidone (19), were as effective as Thf-FU. The activities of 2,4-di-O-substituted derivatives, 2,4-dibutoxy-5-fluoropyrimidine (1) and 2,4-dibenzyloxy-5-fluoropyrimidine (6), against Ehrlich carcinoma and against sarcoma 180,respectively, were the same as those of Thf-FU. The 1-substituted derivatives, 1-ethoxymethyl-5-fluorouracil (49) and 1-(1-ethoxy-1-phenylmethyl)-5-fluorouracil (50), were found to be as effective as Thf-FU.