1
|
Kawahara J, Yoshida M, Kojima H, Uno R, Ozeki M, Kawasaki I, Habara M, Ikezaki H, Uchida T. The Inhibitory Effect of Adenylic Acid on the Bitterness of the Antibacterial Combination Drug Trimethoprim/Sulfamethoxazole. Chem Pharm Bull (Tokyo) 2023; 71:198-205. [PMID: 36858524 DOI: 10.1248/cpb.c22-00618] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
The purpose of the present study was to evaluate bitterness suppression effect of adenylic acid (AMP) as a nucleotide-derived nutrient enhancer on a bitter commercial drug. In the present study, we evaluated peripheral bitterness inhibition effect of AMP on the trimethoprim (TMP) and sulfamethoxazole (SMZ) combination formulation based on taste sensor. The taste sensor values of TMP solutions with different concentrations show large sensor output in correlation with the concentration of TMP, whereas no sensor output in shown for the SMZ solutions. Therefore, the bitterness of this combination formulation is mainly due to TMP. We evaluated the TMP bitterness inhibitory effects of AMP, sodium salt of AMP (AMP Na; sodium adenylate), sodium salt of GMP (GMP Na; sodium guanylate), and sodium salt of inosine monophosphate (IMP Na; sodium inosinate), and found that only AMP displayed very effective bitterness inhibition. MarvinSketch analysis revealed that potential electrostatic interaction between cationized TMP and anionized forms (II and III) of AMP may cause bitterness suppression. 1H-NMR study suggested an interaction of TMP and AMP molecules based on chemical shift perturbations and an interaction between the phosphate group of AMP and amino group of TMP. Lastly, conventional elution analysis simulating oral cavity capacity for up to one minute were performed using commercial TMP/SMZ combination granules. The sensor output gradually increased up to 60 s. The addition of AMP solution to the eluted sample at 60 s significantly decreased the bitterness sensor output of the eluted sample.
Collapse
Affiliation(s)
- Jun Kawahara
- Faculty of pharmaceutical Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Miyako Yoshida
- Faculty of pharmaceutical Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Honami Kojima
- Faculty of pharmaceutical Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Rio Uno
- Faculty of pharmaceutical Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Minoru Ozeki
- Faculty of pharmaceutical Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Ikuo Kawasaki
- Faculty of pharmaceutical Faculty of Pharmaceutical Science, Mukogawa Women's University
| | | | | | - Takahiro Uchida
- Faculty of pharmaceutical Faculty of Pharmaceutical Science, Mukogawa Women's University
| |
Collapse
|
2
|
Uno R, Ohkawa K, Kojima H, Haraguchi T, Ozeki M, Kawasaki I, Yoshida M, Habara M, Ikezaki H, Uchida T. Masking the Taste of Fixed-Dose Combination Drugs: Particular NSAIDs Can Efficiently Mask the Bitterness of Famotidine. Chem Pharm Bull (Tokyo) 2023; 71:148-153. [PMID: 36724977 DOI: 10.1248/cpb.c22-00679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
This study aimed to evaluate the bitterness of famotidine (FAM) combined with each of three non-steroidal anti-inflammatory drugs (NSAIDs): ibuprofen (IBU), flurbiprofen (FLU), and naproxen (NAP), which have potential as fixed-dose combination (FDC) drugs. We evaluated the bitterness of FAM and each NSAID by taste sensor AN0 and C00, respectively. FAM showed high sensor output representing sensitivity to bitterness, whereas three NSAIDs did not show large sensor output, suggesting that the bitterness intensities of three NSAIDs were lower than that of FAM. The bitterness of FAM on sensor AN0 was suppressed in a concentration-dependent manner when mixed with IBU, FLU, or NAP. Among three NSAIDs, IBU most effectively inhibited bitterness on sensor output, and the gustatory sensation test confirmed that adding IBU to FAM reduced the bitterness of FAM in a concentration-dependent manner. MarvinSketch confirmed that the drugs were mostly present in an ionic solution when FAM was mixed with NSAIDs. The 1H-NMR spectroscopy analysis also revealed the presence of electrostatic interactions between FAM and NSAIDs, suggesting that the electrostatic interaction between FAM and NSAIDs might inhibit the adsorption of FAM on the bitter taste sensor membrane, thereby masking the bitter taste.
Collapse
Affiliation(s)
- Rio Uno
- Department of Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Kyoko Ohkawa
- Department of Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Honami Kojima
- Department of Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Tamami Haraguchi
- Department of Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Minoru Ozeki
- Department of Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Ikuo Kawasaki
- Department of Faculty of Pharmaceutical Science, Mukogawa Women's University
| | - Miyako Yoshida
- Department of Faculty of Pharmaceutical Science, Mukogawa Women's University
| | | | | | - Takahiro Uchida
- Department of Faculty of Pharmaceutical Science, Mukogawa Women's University
| |
Collapse
|
3
|
Matsumoto T, Okazaki S, Aoki S, Niki A, Iwasaki H, Ozeki M, Yamashita M, Kojima N, Kawasaki I. Facile Synthesis of 5-Alkoxy-4-Aryltetrahydrofuran-2-one Using Hypervalent Iodine Reagents. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
4
|
Niki A, Ozeki M, Kuse A, Nakagawa S, Aoki S, Shigeta T, Kajimoto T, Iwasaki H, Kojima N, Arimitsu K, Hosoi S, Node M, Yamashita M, Kawasaki I. Construction of Acyclic All-Carbon Quaternary Stereocenter Based on Asymmetric Michael Addition of Chiral Amine. Chem Pharm Bull (Tokyo) 2021; 69:926-930. [PMID: 34470957 DOI: 10.1248/cpb.c21-00436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Acyclic asymmetric quaternary stereocenters, which are composed of four carbon-carbon bonds, were finely constructed by utilizing a face-selective alkylation of enolate intermediates derived from an asymmetric Michael addition reaction of a chiral lithium amide with trisubstituted (E)-α,β-unsaturated esters. The present face-selective alkylation was able to employ diverse alkyl halides as an electrophile to afford various Michael adducts having an all-carbon quaternary stereocenter. With regard to the deprotection of the chiral auxiliary, N-iodosuccinimide used in our previous study did not work in the present cases; however, we found that pyridine iodine monochloride in the presence of H2O was effective to remove the bornyl group and the benzyl group on the amino group to provide the β-amino ester derivative.
Collapse
Affiliation(s)
- Aya Niki
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| | - Minoru Ozeki
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| | - Akiko Kuse
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Shiho Nakagawa
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| | - Shui Aoki
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| | - Takashi Shigeta
- Department of Food Science and Biotechnology, School of Food and Nutritional Sciences, University of Shizuoka
| | - Tetsuya Kajimoto
- Medicinal Organic Chemistry Laboratory, College of Pharmaceutical Sciences, Ritsumeikan University
| | - Hiroki Iwasaki
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Naoto Kojima
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Kenji Arimitsu
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Shinzo Hosoi
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Manabu Node
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Masayuki Yamashita
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Ikuo Kawasaki
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| |
Collapse
|
5
|
Kojima H, Haraguchi T, Ikegami S, Nishikawa H, Yoshida M, Ozeki M, Kawasaki I, Uchida T. Preparation and Evaluation of Poly-γ-glutamic Acid Hydrogel Mixtures with Amlodipine Besylate: Effect on Ease of Swallowing and Taste Masking. Chem Pharm Bull (Tokyo) 2019; 67:1284-1292. [PMID: 31787655 DOI: 10.1248/cpb.c19-00548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The purpose of the study was to prepare a poly-γ-glutamic acid hydrogel (PGA gel), to evaluate physicochemical properties, its ease of swallowing using texture profile analysis (TPA) and its taste-masking effects on amlodipine besylate (AML) using the artificial taste sensor and human gustatory sensation testing. Using TPA, 0.5 and 1.0% (w/v) PGA gels in the absence of drug were within the range of acceptability for use in people with difficulty swallowing according to permission criteria published by the Japanese Consumers Affairs Agency. The elution of AML from prepared PGA gels was complete within an hour and the gel did not appear to influence the bioavailability of AML. The sensor output of the basic bitterness sensor AN0 in response to AML mixed with 0.5 and 1.0% PGA gels was suppressed to a significantly greater degree than AML mixed with 0.5 and 1.0% agar. In human gustatory sensation testing, 0.5 and 1.0% PGA gels containing AML showed a potent bitterness-suppressing effect. Finally, 1H-NMR spectroscopic analysis was carried out to examine the mechanism of bitterness suppression when AML was mixed with PGA gel. The signals of the proton nearest to the nitrogen atom of AML shifted clearly upfield, suggesting an interaction between the amino group of AML and the carboxyl group of PGA gel. In conclusion, PGA gel is expected to be a useful excipient in formulations of AML, not only increasing ease of swallowing but also masking the bitterness of the basic drug.
Collapse
Affiliation(s)
- Honami Kojima
- Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| | | | - Saeri Ikegami
- Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| | | | - Miyako Yoshida
- Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| | - Minoru Ozeki
- Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| | - Ikuo Kawasaki
- Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| | - Takahiro Uchida
- Faculty of Pharmaceutical Sciences, Mukogawa Women's University
| |
Collapse
|
6
|
Yoshida M, Kojima H, Uda A, Haraguchi T, Ozeki M, Kawasaki I, Yamamoto K, Yano I, Hirai M, Uchida T. Bitterness-Masking Effects of Different Beverages on Zopiclone and Eszopiclone Tablets. Chem Pharm Bull (Tokyo) 2019; 67:404-409. [DOI: 10.1248/cpb.c18-00502] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Miyako Yoshida
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Honami Kojima
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Atsushi Uda
- Department of Pharmacy, Kobe University Hospital
| | | | - Minoru Ozeki
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Ikuo Kawasaki
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | | | - Ikuko Yano
- Department of Pharmacy, Kobe University Hospital
| | - Midori Hirai
- Division of Pharmacokinetics, Kobe University Graduate School of Medicine
| | - Takahiro Uchida
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| |
Collapse
|
7
|
Ozeki M, Hachino A, Shigeta T, Niki A, Kobayashi N, Mizutani H, Nakamura A, Horie A, Arimitsu K, Kajimoto T, Hosoi S, Iwasaki H, Kojima N, Yamashita M, Kawasaki I. A Facile and Convenient Synthesis of Trisubstituted (<i>E</i>)-α,β-Unsaturated Esters by Tandem Acetylation-E1cB Reaction. Chem Pharm Bull (Tokyo) 2019; 67:71-74. [DOI: 10.1248/cpb.c18-00666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Minoru Ozeki
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Ayumi Hachino
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Takashi Shigeta
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Aya Niki
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Natsuko Kobayashi
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Hideki Mizutani
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Akihiro Nakamura
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Ayano Horie
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Kenji Arimitsu
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Tetsuya Kajimoto
- Medicinal Organic Chemistry Laboratory, College of Pharmaceutical Sciences, Ritsumeikan University
| | - Shinzo Hosoi
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Hiroki Iwasaki
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Naoto Kojima
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Masayuki Yamashita
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Ikuo Kawasaki
- Department of Medicinal and Synthetic Chemistry, Faculty of Pharmaceutical Sciences, Mukogawa Women’s University
| |
Collapse
|
8
|
Baba T, Kawasaki I, Mori E, Takeda A. Mechanisms underlying loss of awareness of hyposmia in Parkinson's disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
9
|
Kimura H, Okuda H, Ishiguro M, Arimitsu K, Makino A, Nishii R, Miyazaki A, Yagi Y, Watanabe H, Kawasaki I, Ono M, Saji H. 18F-Labeled Pyrido[3,4- d]pyrimidine as an Effective Probe for Imaging of L858R Mutant Epidermal Growth Factor Receptor. ACS Med Chem Lett 2017; 8:418-422. [PMID: 28435529 DOI: 10.1021/acsmedchemlett.6b00520] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 03/20/2017] [Indexed: 01/20/2023] Open
Abstract
In nonsmall-cell lung carcinoma patients, L858R mutation of epidermal growth factor receptor (EGFR) is often found, and molecular target therapy using EGFR tyrosine kinase inhibitors is effective for the patients. However, the treatment frequently develops drug resistance by secondary mutation, of which approximately 50% is T790M mutation. Therefore, the ability to predict whether EGFR will undergo secondary mutation is extremely important. We synthesized a novel radiofluorinated 4-(anilino)pyrido[3,4-d]pyrimidine derivative ([18F]APP-1) and evaluated its potential as a positron emission tomography (PET) imaging probe to discriminate the difference in mutations of tumors. EGFR inhibition assay, cell uptake, and biodistribution study showed that [18F]APP-1 binds specifically to the L858R mutant EGFR but not to the L858R/T790M mutant. Finally, on PET imaging study using [18F]APP-1 with tumor-bearing mice, the H3255 tumor (L858R mutant) was more clearly visualized than the H1975 tumor (L858R/T790M mutant).
Collapse
Affiliation(s)
- Hiroyuki Kimura
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
- Department
of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, Kyoto 607-8414, Japan
| | - Haruka Okuda
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
| | - Masumi Ishiguro
- School
of Pharmacy and Pharmaceutical Sciences, Mukogawa Women’s University, Hyogo 663-8179, Japan
| | - Kenji Arimitsu
- Department
of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, Kyoto 607-8414, Japan
- School
of Pharmacy and Pharmaceutical Sciences, Mukogawa Women’s University, Hyogo 663-8179, Japan
| | - Akira Makino
- Biomedical
Imaging Research Center (BIRC), University of Fukui, Fukui 910-1193, Japan
| | - Ryuichi Nishii
- National Institute of Radiological Sciences, Chiba 263-8555, Japan
| | - Anna Miyazaki
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
| | - Yusuke Yagi
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
| | - Hiroyuki Watanabe
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
| | - Ikuo Kawasaki
- School
of Pharmacy and Pharmaceutical Sciences, Mukogawa Women’s University, Hyogo 663-8179, Japan
| | - Masahiro Ono
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
| | - Hideo Saji
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
| |
Collapse
|
10
|
Shiraishi S, Haraguchi T, Nakamura S, Kojima H, Kawasaki I, Yoshida M, Uchida T. Suppression in Bitterness Intensity of Bitter Basic Drug by Chlorogenic Acid. Chem Pharm Bull (Tokyo) 2017; 65:151-156. [DOI: 10.1248/cpb.c16-00670] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | - Saki Nakamura
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Honami Kojima
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Ikuo Kawasaki
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Miyako Yoshida
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Takahiro Uchida
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| |
Collapse
|
11
|
Kawasaki I, Uchimoto H, Ikeda M, Matsushita A, Shigeta T, Arimitsu K, Yasui H, Tsuji T, Yamashita M, Nishide K, Ozeki M. Development of New Ligands for the Recyclable Catalytic Asymmetric Transfer Hydrogenation in Ionic Liquid. HETEROCYCLES 2017. [DOI: 10.3987/com-17-13657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
12
|
Uchimoto H, Ikeda M, Tanida S, Ohhashi K, Chihara Y, Shigeta T, Arimitsu K, Yamashita M, Nishide K, Kawasaki I. Green Synthesis of ( R)-Terbutaline for Recyclable Catalytic Asymmetric Transfer Hydrogenation in Ionic Liquids. Chem Pharm Bull (Tokyo) 2017; 65:389-395. [DOI: 10.1248/cpb.c16-00949] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hitomi Uchimoto
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Miki Ikeda
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Saori Tanida
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Kayo Ohhashi
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | | | - Takashi Shigeta
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Kenji Arimitsu
- School of Pharmaceutical Sciences, Mukogawa Women’s University
- Kyoto Pharmaceutical University
| | | | | | - Ikuo Kawasaki
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| |
Collapse
|
13
|
Tarao A, Niki A, Komagawa S, Arimitsu K, Uchimoto H, Kawasaki I, Yamaguchi K, Nishide K. A highly regio- and stereoselective selenoxide elimination of 1,2-bis[4-(trimethylsilyl)phenylseleno]alkanes to give (E)-alkenyl selenoxides and its mechanistic study. ChemistrySelect 2016. [DOI: 10.1002/slct.201500054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Asami Tarao
- School of Pharmacy and Pharmaceutical Sciences; Mukogawa Women's University; 11-68 Koshien Kyuban-cho Nishinomiya, Hyogo 663-8179 Japan
| | - Aya Niki
- School of Pharmacy and Pharmaceutical Sciences; Mukogawa Women's University; 11-68 Koshien Kyuban-cho Nishinomiya, Hyogo 663-8179 Japan
| | - Shinsuke Komagawa
- Pharmaceutical Sciences at Kagawa Campus; Tokushima Bunri University, 1314-1 Shido; Sanuki, Kagawa 769-2193 Japan
| | - Kenji Arimitsu
- School of Pharmacy and Pharmaceutical Sciences; Mukogawa Women's University; 11-68 Koshien Kyuban-cho Nishinomiya, Hyogo 663-8179 Japan
| | - Hitomi Uchimoto
- School of Pharmacy and Pharmaceutical Sciences; Mukogawa Women's University; 11-68 Koshien Kyuban-cho Nishinomiya, Hyogo 663-8179 Japan
| | - Ikuo Kawasaki
- School of Pharmacy and Pharmaceutical Sciences; Mukogawa Women's University; 11-68 Koshien Kyuban-cho Nishinomiya, Hyogo 663-8179 Japan
| | - Kentaro Yamaguchi
- Pharmaceutical Sciences at Kagawa Campus; Tokushima Bunri University, 1314-1 Shido; Sanuki, Kagawa 769-2193 Japan
| | - Kiyoharu Nishide
- School of Pharmacy and Pharmaceutical Sciences; Mukogawa Women's University; 11-68 Koshien Kyuban-cho Nishinomiya, Hyogo 663-8179 Japan
| |
Collapse
|
14
|
Tarao A, Tabuchi Y, Sugimoto E, Ikeda M, Uchimoto H, Arimitsu K, Kimura H, Kawasaki I, Kawahata M, Yamaguchi K, Nishide K. A mechanistic investigation of anti-elimination in (Z)-1,2-bis(arylseleno)-1-alkenes and their sulfur analogs. Org Biomol Chem 2015; 13:5964-71. [PMID: 25927266 DOI: 10.1039/c5ob00490j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The oxidation of (Z)-1,2-bis(arylseleno)-1-alkenes is known to afford alkynyl selenoxides via a unique selenoxide anti-elimination mechanism; however, to date, there have been no mechanistic studies of this reaction. During our studies of this transformation, monoselenoxides 6 and 7 were unexpectedly isolated as stable reaction intermediates. In addition, (77)Se NMR studies of the reaction mixture revealed the presence of an intramolecular Se···O interaction and the formation of alkynyl selenoxides. Meanwhile, even at higher temperatures, the reaction of a (Z)-1,2-bis(arylsulfinyl)-1-alkene, the sulfur analog of (Z)-1,2-bis(arylseleninyl)-1-alkenes, did not proceed via sulfoxide elimination but proceeded via isomerization and disproportionation. Therefore, the intramolecular Se···O interaction can be concluded to play a pivotal role in the anti-elimination reaction.
Collapse
Affiliation(s)
- Asami Tarao
- School of Pharmacy and Pharmaceutical Sciences, Mukogawa Women's University, 11-68 Koshien Kyuban-cho, Nishinomiya, Hyogo 663-8179, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Uchimoto H, Tsuji T, Kawasaki I, Arimitsu K, Yasui H, Yamashita M, Ohta S, Nishide K. Preparation of Chiral Ligands Connected with Quaternary Ammonium Group for Recyclable Catalytic Asymmetric Transfer Hydrogenation in Ionic Liquid. Chem Pharm Bull (Tokyo) 2015; 63:200-9. [DOI: 10.1248/cpb.c14-00747] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hitomi Uchimoto
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Tomoko Tsuji
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Ikuo Kawasaki
- School of Pharmaceutical Sciences, Mukogawa Women’s University
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Kenji Arimitsu
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Hiroyuki Yasui
- Department of Analytical and Bioinorganic Chemistry, Division of Analytical and Physical Sciences, Kyoto Pharmaceutical University
| | - Masayuki Yamashita
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | - Shunsaku Ohta
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University
| | | |
Collapse
|
16
|
Månsson M, Umegaki I, Nozaki H, Higuchi Y, Kawasaki I, Watanabe I, Sakurai H, Sugiyama J. Na-ion dynamics in Quasi-1D compound NaV2O4. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/551/1/012035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
17
|
Kawasaki I, Nishide K, Tabuchi Y, Kakumoto Y, Uchimoto H, Ohishi Y. A Novel One-Step Synthesis of Benzo[b]furo[3,2-b]pyridines Having an Amino Group at the 4-Position from Benzo[b]furo[3,2-d][1,3]oxazine. HETEROCYCLES 2013. [DOI: 10.3987/com-12-12615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
18
|
Akai Y, Tabuchi Y, Ando K, Ito A, Sakata Y, Kawasaki I, Ohishi T, Yamashita M, Ohta S, Nishide K, Ohishi Y. Preparation of Benzo[ b]furans Having Five-Membered Heterocycles at the 2-Position and 2-(4-Alkylcarbamoylbuta-1,3-dienyl)benzo[ b]furans, and Their Cysteinyl Leukotriene Receptor (cysLT1, cysLT2) Inhibitory Activity. Chem Pharm Bull (Tokyo) 2012; 60:1461-7. [DOI: 10.1248/cpb.c12-00560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yukiko Akai
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Yukako Tabuchi
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Kumiko Ando
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Azusa Ito
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Yoko Sakata
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Ikuo Kawasaki
- School of Pharmaceutical Sciences, Mukogawa Women’s University
| | - Takahiro Ohishi
- Science of Environment and Mathematical Modeling, Graduate School of Engineering, Doshisha University
| | | | | | | | - Yoshitaka Ohishi
- School of Pharmaceutical Sciences, Mukogawa Women’s University
- Doshisha Women’s College of Liberal Arts
| |
Collapse
|
19
|
Nomura S, Arimitsu K, Yamaguchi S, Kosuga Y, Kakimoto Y, Komai T, Hasegawa K, Nakanishi A, Miyoshi T, Iwasaki H, Ozeki M, Kawasaki I, Kurume A, Ohta S, Yamashita M. Synthesis of (.+-.)-8-Deisopropyladunctin B. Chem Pharm Bull (Tokyo) 2012; 60:94-103. [DOI: 10.1248/cpb.60.94] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
20
|
Tabuchi Y, Ando Y, Kanemura H, Kawasaki I, Ohishi T, Koida M, Fukuyama R, Nakamuta H, Ohta S, Nishide K, Ohishi Y. Preparation of novel (Z)-4-ylidenebenzo[b]furo[3,2-d][1,3]oxazines and their biological activity. Bioorg Med Chem 2009; 17:3959-67. [PMID: 19406645 PMCID: PMC7127799 DOI: 10.1016/j.bmc.2009.04.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2009] [Revised: 04/06/2009] [Accepted: 04/07/2009] [Indexed: 11/30/2022]
Abstract
A reaction of 2-acetyl-3-acylaminobenzo[b]furans (9d–o) with Vilsmeier (VM) reagent afforded a mixture of (E)- and (Z)-{(E)-2-aralkenylbenzo[b]furo[3,2-d][1,3]oxazin-4-ylidene}acetaldehydes (5) with a characteristic exo-formylmethylene group on the oxazine ring. The Z-isomer was more stable than the E-isomer. The Z-isomers ((Z)-5) were reacted with phosphonate reagents under two different conditions to obtain various butadiene derivatives (12) containing benzo[b]furo[3,2-d][1,3]oxazine skeleton. Typical compounds (5 and 12) were evaluated for their anti-osteoclastic bone resorption activity, antagonistic activity for the cysLT1 receptor and growth inhibitory activity for MIA PaCa-2 and MCF-7. Compounds 12f and 12j showed potent anti-osteoclastic bone resorption activity comparable to E2 (17β-estradiol).
Collapse
Affiliation(s)
- Yukako Tabuchi
- School of Pharmaceutical Sciences, Mukogawa Women's University, 11-68 Koshien Kyubancho, Nishinomiya, Hyogo 663-8179, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Rein T, Vares L, Kawasaki I, Pedersen TM, Norrby PO, Brandt P, Tanner D. Asymmetric Horner-Wadsworth-Emmons Reactions with Meso-Dialdehydes: Scope, Mechanism, and Synthetic Applications. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426509908546209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Tobias Rein
- a Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- b Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- c Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- d Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- e Department of Medicinal Chemistry , Royal Danish School of Pharmacy, Universitetsparken , 2, DK-2100 Copenhagen, Denmark
| | - Lauri Vares
- a Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- b Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- c Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- d Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- e Department of Medicinal Chemistry , Royal Danish School of Pharmacy, Universitetsparken , 2, DK-2100 Copenhagen, Denmark
| | - Ikuo Kawasaki
- a Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- b Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- c Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- d Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- e Department of Medicinal Chemistry , Royal Danish School of Pharmacy, Universitetsparken , 2, DK-2100 Copenhagen, Denmark
| | - Torben M. Pedersen
- a Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- b Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- c Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- d Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- e Department of Medicinal Chemistry , Royal Danish School of Pharmacy, Universitetsparken , 2, DK-2100 Copenhagen, Denmark
| | - Per-Ola Norrby
- a Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- b Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- c Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- d Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- e Department of Medicinal Chemistry , Royal Danish School of Pharmacy, Universitetsparken , 2, DK-2100 Copenhagen, Denmark
| | - Peter Brandt
- a Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- b Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- c Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- d Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- e Department of Medicinal Chemistry , Royal Danish School of Pharmacy, Universitetsparken , 2, DK-2100 Copenhagen, Denmark
| | - David Tanner
- a Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- b Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- c Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- d Department of Organic Chemistry , Technical University of Denmark , Lyngby DK-2800, Denmark
- e Department of Medicinal Chemistry , Royal Danish School of Pharmacy, Universitetsparken , 2, DK-2100 Copenhagen, Denmark
| |
Collapse
|
22
|
Yamashita M, Yadav N, Saya Y, Kurume A, Kawasaki I, Ohta S. A Novel Skeleton Transformation of 2a-Substituted 2a,8b-Dihydro-3 H-benzo[ b]cyclobuta[ d]pyran-3-ones to 2-(2-Oxoethyl)-2 H-1-benzopyrans Promoted by a Combination of ZnI 2, Organic Base and H 2O. Synlett 2008. [DOI: 10.1055/s-2008-1032044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
23
|
Kuramoto M, Sakata Y, Terai K, Kawasaki I, Kunitomo JI, Ohishi T, Yokomizo T, Takeda S, Tanaka S, Ohishi Y. Preparation of leukotriene B4 inhibitory active 2- and 3-(2-aminothiazol-4-yl)benzo[b]furan derivatives and their growth inhibitory activity on human pancreatic cancer cells. Org Biomol Chem 2008; 6:2772-81. [DOI: 10.1039/b803313g] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
24
|
Kurume A, Kamata Y, Yamashita M, Wang Q, Matsuda H, Yoshikawa M, Kawasaki I, Ohta S. Synthesis of 3-Substituted Isocoumarins and Their Inhibitory Effects on Degranulation of RBL-2H3 Cells Induced by Antigen. Chem Pharm Bull (Tokyo) 2008; 56:1264-9. [DOI: 10.1248/cpb.56.1264] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Ai Kurume
- Department of Functional Molecular Chemistry, Kyoto Pharmaceutical University
| | - Yasuhiro Kamata
- Department of Functional Molecular Chemistry, Kyoto Pharmaceutical University
| | - Masayuki Yamashita
- Department of Functional Molecular Chemistry, Kyoto Pharmaceutical University
| | - Qilong Wang
- Department of Pharmacognosy, 21st Century COE Program, Kyoto Pharmaceutical University
| | - Hisashi Matsuda
- Department of Pharmacognosy, 21st Century COE Program, Kyoto Pharmaceutical University
| | - Masayuki Yoshikawa
- Department of Pharmacognosy, 21st Century COE Program, Kyoto Pharmaceutical University
| | - Ikuo Kawasaki
- Department of Functional Molecular Chemistry, Kyoto Pharmaceutical University
- School of Pharmaceutical Sciences, Mukogawa Women's University
| | - Shunsaku Ohta
- Department of Functional Molecular Chemistry, Kyoto Pharmaceutical University
| |
Collapse
|
25
|
Yamashita M, Yadav ND, Sumida Y, Kawasaki I, Kurume A, Ohta S. Discrepancy of the spectral data between adunctin E and the synthetic one. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.06.050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
26
|
Yamashita M, Yadav ND, Sawaki T, Takao I, Kawasaki I, Sugimoto Y, Miyatake A, Murai K, Takahara A, Kurume A, Ohta S. Asymmetric Total Synthesis of (−)-Linderol A. J Org Chem 2007; 72:5697-703. [PMID: 17579456 DOI: 10.1021/jo070682+] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first asymmetric total synthesis of (-)-Linderol A, a potent inhibitor of melanin biosynthesis of cultured B-16 melanoma cells, has been achieved via two key reactions: a diastereoselective [2+2] photocycloaddition of a coumarin-3-carboxylate bearing a chiral auxiliary with 3-methyl-1-butene and a subsequent stereoconvergent transformation of the photoadducts with use of dimethylsulfoxonium methylide to afford a tetrahydrodibenzofuran derivative.
Collapse
Affiliation(s)
- Masayuki Yamashita
- Department of Functional Molecular Chemistry, 21st COE Program, Kyoto Pharmaceutical University, Misasagi-Nakauchi 5, Yamashina, Kyoto 607-8414, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Sakata Y, Kuramoto M, Ando K, Yamaguchi M, Kawasaki I, Kunitomo JI, Yokomizo T, Ohishi Y. Preparation of 3-(4-chlorophenyl)-2-(2-aminothiazol-4-yl)-5-methoxybenzo[b]furan derivatives and their leukotriene B4 inhibitory activity. Org Biomol Chem 2007; 5:3083-6. [PMID: 17878965 DOI: 10.1039/b711391a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of 3-(4-chlorophenyl)-2-(2-aminothiazol-4-yl)benzo[b]furan derivatives 6-10 were prepared and their leukotriene B(4) inhibitory activity was evaluated. We found that several compounds showed strong inhibition of calcium mobilization in CHO cells overexpressing human BLT(1) and BLT(2) receptors. Among them, 3-(4-chlorophenyl)-2-[5-formyl-2-[(dimethylamino)methyleneamino]thiazol-4-yl]-5-methoxybenzo[b]furan 9b showed the most potent and selective inhibition for the human BLT(2) receptor, and its IC(50) value was smaller than that of the selected positive control compound, ZK-158252.
Collapse
Affiliation(s)
- Yoko Sakata
- School of Pharmaceutical Sciences, Mukogawa Women's University, Nishinomiya, Japan
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Ohta S, Khadeer A, Kakuno A, Kawasaki I, Yamashita M. Regio- and Stereoselective Head-to-Head Photo[2+2]cycloaddition of 3-(1-Methyl-2-phenylsulfanyl-1H-imidazol-5-yl)propenoates. HETEROCYCLES 2007. [DOI: 10.3987/com-06-10964] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
29
|
Kawasaki I, Sakaguchi N, Khadeer A, Yamashita M, Ohta S. Homonuclear Diels–Alder dimerization of 5-ethenyl-2-phenylsulfanyl-1H-imidazoles and its application to synthesis of 12,12′-dimethylageliferin. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.08.027] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
30
|
Yamashita M, Inaba T, Nagahama M, Shimizu T, Kosaka S, Kawasaki I, Ohta S. Novel stereoconvergent transformation of 1,2a-disubstituted 1,2,2a,8b-tetrahydro-3H-benzo[b]cyclobuta[d]pyran-3-ones to 1,3-disubstituted 1,2,4a,9b-tetrahydrodibenzofuran-4-ols and its application to the second-generation synthesis of (+/-)-linderol A. Org Biomol Chem 2005; 3:2296-304. [PMID: 16010364 DOI: 10.1039/b503890a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,2a-Disubstituted 1,2,2a,8b-tetrahydro-3H-benzo[b]cyclobuta[d]pyran-3-ones bearing an electron-withdrawing group at the 2a-position were treated with two equivalents of dimethylsulfoxonium methylide to give r-1,t-4a,t-9b-1,3-disubstituted 1,2,4a,9b-tetrahydrodibenzofuran-4-ols stereoconvergently regardless of the stereochemistry of the 1-position on the benzocyclobutapyran ring. This methodology was applied to the second-generation synthesis of (+/-)-linderol A, a melanin biosynthesis inhibitory natural product.
Collapse
Affiliation(s)
- Masayuki Yamashita
- Department of Functional Molecular Chemistry, 21st COE Program, Kyoto Pharmaceutical University, Misasagi-Nakauchi 5, Yamashina, Kyoto 607-8414, Japan
| | | | | | | | | | | | | |
Collapse
|
31
|
Kawasaki I, Terano M, Yada E, Kawai M, Yamashita M, Ohta S. Novel cyclo-dimerization of 1-tert-butoxycarbonyl-3-alkenylindole derivatives. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2004.12.072] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
32
|
Ohta S, Yamashita M, Navnath Dnyanoba Y, Nagahama M, Inaba T, Nishino Y, Miura K, Kosaka S, Fukao J, Kawasaki I. Synthesis and Unambiguous Stereochemical Determination of 1-exo- and 1-endo-1-Aryl-1,2,2a,8b-tetrahydro-3H-benzo[b]cyclobuta[d]pyran-3-ones. HETEROCYCLES 2005. [DOI: 10.3987/com-05-10498] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
33
|
Ohta S, Yamashita M, Shimizu T, Inaba T, Takada A, Takao I, Kawasaki I. Improved Synthesis of (±)-Linderol A and Its First Conversion to (±)- 6-epi-Adunctin E. HETEROCYCLES 2005. [DOI: 10.3987/com-05-10345] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
34
|
Kawasaki I, Tsunoda K, Tsuji T, Yamaguchi T, Shibuta H, Uchida N, Yamashita M, Ohta S. A recyclable catalyst for asymmetric transfer hydrogenation with a formic acid–triethylamine mixture in ionic liquid. Chem Commun (Camb) 2005:2134-6. [PMID: 15846424 DOI: 10.1039/b500320b] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel task-specific ionic ligand with an imidazolium salt moiety was synthesized, and its catalytic ability and recyclability for asymmetric transfer hydrogenation of acetophenone derivatives with a formic acid-triethylamine azeotropic mixture in an ionic liquid [bmim][PF6] was examined.
Collapse
Affiliation(s)
- Ikuo Kawasaki
- Department of Functional Molecular Chemistry, Kyoto Pharmaceutical University, Misasagi Yamashinaku, Kyoto, Japan
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Ohta S, Yamashita M, Inaba T, Shimizu T, Kawasaki I. Stereoconvergent Transformation of 1,2a-Disubstituted Benzo[ b]cyclobuta[ d]pyrans to 1,3-Disubstituted Tetrahydrodibenzofuran-4-ols and its Application to the Second-Generation Synthesis of (±)-Linderol A. Synlett 2004. [DOI: 10.1055/s-2004-830875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
36
|
Yamashita M, Shimizu T, Kawasaki I, Ohta S. Determination of the absolute configuration and the first total synthesis of (−)- and (+)-linderol A. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.06.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
37
|
Kawasaki I, Osaki T, Tsunoda K, Watanabe E, Matsuyama M, Sanai A, Khadeer A, Yamashita M, Ohta S. Double nucleophilic reaction of amines to the imidazole nucleus and selective synthesis of 5-aminoimidazoles. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.05.088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
38
|
Ohta S, Sato K, Kawasaki I, Yamaguchi Y, Nishio S, Yamashita M. Novel nucleophilic CC bond-formingtele-reaction of imidazole ring. J Heterocycl Chem 2004. [DOI: 10.1002/jhet.5570410305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
39
|
Yamashita M, Ohta N, Shimizu T, Matsumoto K, Matsuura Y, Kawasaki I, Tanaka T, Maezaki N, Ohta S. First total synthesis of (+/-)-Linderol A, a tricyclic hexahydrodibenzofuran constituent of Lindera umbellata bark, with potent inhibitory activity on melanin biosynthesis of cultured B-16 melanoma cells. J Org Chem 2003; 68:1216-24. [PMID: 12585858 DOI: 10.1021/jo020619e] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first total synthesis of (+/-)-Linderol A, a hexahydrodibenzofuran constituent of Lindera umbellata bark, with potent inhibitory activity on the melanin biosynthesis of cultured B-16 melanoma cells, was achieved through 19 steps of reaction in 6.6% overall yield, in which the critical step was a tandem reaction of a 3-ethoxycarbonylcoumarin derivative with dimethylsulfoxonium methylide to yield the 2-ethoxycarbonylcyclopenta[b]benzofuran-3-ol derivative.
Collapse
Affiliation(s)
- Masayuki Yamashita
- Kyoto Pharmaceutical University, Misasagi-Nakauchicho 5, Yamashinaku, Kyoto 607-8414, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Ohta S, Kawasaki I, Domen A, Kataoka SY, Yamauchi K, Yamashita M. A New Synthetic Method for Substituted 2,4-Dihydro-3H-1,2,4-triazol-3-ones and 3-thiones via 1,4-Dialkyl-5-phenylthio-1H-1,2,4-triazolium Salts. HETEROCYCLES 2003. [DOI: 10.3987/com-02-9656] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
41
|
Ohta S, Nakamura S, Kawasaki I, Yamashita M. 1-Methyl-3-trimethylsilylparabanic Acid as an Effective Reagent for the Preparation of N-Substituted (1-Methyl-2,5-dioxo-1,2,5H-imidazolin-4-yl)amines and Its Application to the Total Synthesis of Isonaamidines A and C, Antitumor Imidazole Alkaloids. HETEROCYCLES 2003. [DOI: 10.3987/com-02-9683] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
42
|
Kawasaki I, Sakaguchi N, Fukushima N, Fujioka N, Nikaido F, Yamashita M, Ohta S. Novel Diels–Alder-type dimerization of 5-ethenyl-2-phenylsulfanyl-1H-imidazoles and its application to biomimetic synthesis of 12,12′-dimethylageliferin. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)00782-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
43
|
Nakamura S, Kawasaki I, Kunimura M, Matsui M, Noma Y, Yamashita M, Ohta S. Total synthesis of naamine C and pyronaamidine, antitumor marine imidazole alkaloids. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b200845a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
44
|
Yamashita M, Okuyama K, Kawajiri T, Takada A, Inagaki Y, Nakano H, Tomiyama M, Ohnaka A, Terayama I, Kawasaki I, Ohta S. A novel tandem reaction of 3-substituted coumarins with two equivalents of dimethylsulfoxonium ylide to 2-substituted cyclopenta[b]benzofuran-3-ol derivatives. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00014-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
45
|
Ohishi Y, Hashimoto N, Miyatani K, Ohkita K, Kunitomo JI, Kawasaki I, Yamashita M, Ohta S. Bischler-Napieralski Reaction of N-[2-(2-Bromo-4,5-dialkyloxyphenyl)- ethyl]-N-(1-phenylethyl)-2-(2-bromo-4,5-dimethoxyphenyl)acetamides. HETEROCYCLES 2002. [DOI: 10.3987/com-02-9586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
46
|
Kawasaki I, Nakamura S, Yanagitani S, Kakuno A, Yamashita M, Ohta S. New access to 1,3-dialkyl-2,3-dihydro-2-imino-1H-imidazoles and their application to the first total synthesis of naamine B, a marine 2,3-dihydro-2-imino-1,3-dimethyl-1H-imidazole alkaloid. ACTA ACUST UNITED AC 2001. [DOI: 10.1039/b108762b] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
47
|
Yokoyama H, Nakatsuka K, Shoji T, Kawasaki I, Inaba M, Nishizawa Y. [Intravenous pamidronate delivery to a case with multiple bone metastasis of breast cancer]. Nihon Ronen Igakkai Zasshi 2001; 38:812-5. [PMID: 11774728 DOI: 10.3143/geriatrics.38.812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
MRI and bone scintigraphy of a 64-year-old woman admitted with severe lumbago showed multiple metastatic bone cancer mainly on vertebrae, and breast cancer was found by mammography. After enucleation was performed, treatment with tegafur, tamoxifen and oral bisphosphonate/etidronate was started. Because symptoms associated with bone metastasis worsened, we began to administer 30 mg of pamidronate intravenously every 4 weeks. Since that time the extent of metastasis has been inhibited, resulting in ameliorated lumbodynia and improved quality of life.
Collapse
Affiliation(s)
- H Yokoyama
- Department of Metabolism/Endocrinology and Molecular Medicine, Osaka City University
| | | | | | | | | | | |
Collapse
|
48
|
Yamashita M, Ohta N, Kawasaki I, Ohta S. The First Total Synthesis of (±)-Linderol A, a Tricyclic Hexahydrodibenzofuran Constituent of Lindera umbellata Bark, with Potent Inhibitory Activity on Melanin Biosynthesis of Cultured B-16 Melanoma Cells. Org Lett 2001; 3:1359-62. [PMID: 11348234 DOI: 10.1021/ol0157398] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction in text] The first total synthesis of (+/-)-linderol A, a hexahydrodibenzofuran isolated from Lindera umbellata bark, with potent inhibitory activity on melanin biosynthesis of cultured B-16 melanoma cells was achieved via a 20-step of reaction in 7.64% overall yield starting from 4,6-dimethoxysalicylaldehyde.
Collapse
Affiliation(s)
- M Yamashita
- Kyoto Pharmaceutical University, Misasagi-Nakauchicho 5, Yamashinaku, Kyoto 607-8414, Japan
| | | | | | | |
Collapse
|
49
|
Ogawa M, Kaname T, Kimura S, Kawasaki I, Nomura K, Suzuki M, Miike T, Yamamura K. The lacZ gene under the control of the 7 kb of human dystrophin muscle specific promoter is expressed in cardiac muscle but not in adult skeletal muscle in transgenic mice. Neuromuscul Disord 2001; 11:244-50. [PMID: 11297939 DOI: 10.1016/s0960-8966(00)00186-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In previous transgenic studies, we reported a 0.9 kb fragment from a mouse dystrophin muscle promoter that contains the regulatory elements required for expression of dystrophin only in the right heart. In this study, to further characterize the regulation of muscle type of promoter, we analyzed promoter activity and tissue specificity using a total 14 kb fragment around the human dystrophin muscular-specific exon 1 in vitro and in vivo. In vitro analysis showed that the lacZ construct of the 7 kb promoter and 7 kb intron 1 was expressed 2.5 times as strong as the lacZ construct of only the 7 kb promoter in C2/4 myotubes. In vivo analysis revealed expression of both constructs in the whole heart, skeletal muscle and vascular smooth muscle in embryos. However, in adults, the expression in skeletal muscle disappeared. We conclude that the 7 kb upstream region and the 7 kb intronic region included responsible elements for the expression in the heart, but not in skeletal muscle in vivo. It is possible that a strong enhancer element for skeletal muscle exists in some other region.
Collapse
MESH Headings
- Animals
- Base Sequence/genetics
- Blotting, Northern
- Cardiomyopathy, Dilated/genetics
- Cardiomyopathy, Dilated/metabolism
- Cardiomyopathy, Dilated/physiopathology
- Cells, Cultured
- Dystrophin/genetics
- Embryo, Mammalian/embryology
- Embryo, Mammalian/metabolism
- Galactosides/genetics
- Gene Expression Regulation, Developmental/physiology
- Gene Expression Regulation, Enzymologic/physiology
- Genes, Reporter/genetics
- Indoles
- Lac Operon/genetics
- Mice
- Mice, Transgenic/genetics
- Mice, Transgenic/metabolism
- Muscle, Skeletal/metabolism
- Muscle, Skeletal/pathology
- Muscle, Skeletal/physiopathology
- Muscular Dystrophy, Duchenne/genetics
- Muscular Dystrophy, Duchenne/metabolism
- Muscular Dystrophy, Duchenne/physiopathology
- Myocardium/metabolism
- Myocardium/pathology
- Promoter Regions, Genetic/genetics
Collapse
Affiliation(s)
- M Ogawa
- Department of Child Development, Kumamoto University School of Medicine, 1-1-1 Honjou, Kumamoto, Japan
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Ohishi Y, Miyatani K, Ohno M, Tatsumi K, Kunitomo JI, Kawasaki I, Yamashita M, Ohta S. Bischler-Napieralski Cyclization of N-[2- (2-Bromo-5-hydroxy-4-methoxyphenyl)ethyl]-N-[(S)-1-phenylethyl]-2-(2-bromo-4,5-dimethoxyphenyl)acetamide Accompanied by Elimination of Chiral Auxiliary. HETEROCYCLES 2001. [DOI: 10.3987/com-00-9151] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|