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Ono S, Koga M, Arimura Y, Hatakeyama T, Kobayashi M, Sagara JI, Nakai T, Horino Y, Kuroda H, Oyama H, Arima K. Site-Selective Incorporation of a Functional Group into Lys175 in the Vicinity of the Active Site of Chymotrypsin by Using Peptidyl α-Aminoalkylphosphonate Diphenyl Ester-Derivatives. Molecules 2023; 28:molecules28073150. [PMID: 37049913 PMCID: PMC10096113 DOI: 10.3390/molecules28073150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 03/27/2023] [Accepted: 03/27/2023] [Indexed: 04/05/2023] Open
Abstract
We previously reported that Lys175 in the region of the active site of chymotrypsin (Csin) could be site-selectively modified by using an N-hydroxy succinimide (NHS) ester of the peptidyl derivative containing 1-amino-2-ethylphenylphosphonate diphenyl ester [NHS-Suc-Ala-Ala-PheP(OPh)2]. In this study, the Lys175-selective modification method was expanded to incorporate functional groups into Lys 175 in Csin. Two types of peptidyl phosphonate derivatives with the dansyl group (Dan) as a functional molecule, Dan-β-Ala-[Asp(NHS) or Glu(NHS)]-Ala-Ala-(R)-PheP(OPh)2 (DanD and DanE, respectively), were synthesized, and their action was evaluated when modifying Lys175 in Csin. Ion-exchange chromatography (IEC), fluorescence spectroscopy, and LC-MS/MS were used to analyze the products from the reaction of Csin with DanD or DanE. By IEC and LC-MS/MS, the results showed that DanE reacted with Csin more effectively than DanD to produce the modified Csin (DanMCsin) bearing Dan at Lys175. DanMCsin exhibited an enzymatic activity corresponding to 1/120 of Csin against Suc-Ala-Ala-Phe-pNA. In addition, an effect of Lys175 modification on the access of the proteinaceous Bowman–Birk inhibitor to the active site of DanMCsin was investigated. In conclusion, by using a peptidyl derivative containing 1-amino-2-ethylphenylphosphonate diphenyl ester, we demonstrated that a functional group could be incorporated into Lys175 in Csin.
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Affiliation(s)
- Shin Ono
- Applied Chemistry, Kanazawa Institute of Technology, Hakusan 924-0838, Ishikawa, Japan
| | - Masato Koga
- Applied Chemistry, Kanazawa Institute of Technology, Hakusan 924-0838, Ishikawa, Japan
| | - Yuya Arimura
- Applied Chemistry, Kanazawa Institute of Technology, Hakusan 924-0838, Ishikawa, Japan
| | - Takahiro Hatakeyama
- Applied Chemistry, Kanazawa Institute of Technology, Hakusan 924-0838, Ishikawa, Japan
| | - Mai Kobayashi
- Applied Chemistry, Kanazawa Institute of Technology, Hakusan 924-0838, Ishikawa, Japan
| | - Jun-ichi Sagara
- Applied Bioengineering, Kanazawa Institute of Technology, Hakusan 924-0838, Ishikawa, Japan
| | - Takahiko Nakai
- Graduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Toyama, Japan
| | - Yoshikazu Horino
- Department of Applied Chemistry and Bioscience, Chitose Institute of Science and Technology, Chitose 066-8655, Hokkaido, Japan
| | - Hirofumi Kuroda
- Department of General Education, National Institute of Technology, Ishikawa College, Tsubata 929-0392, Ishikawa, Japan
| | - Hiroshi Oyama
- Faculty of Science and Engineering, Setsunan University, Hirakata 572-8508, Osaka, Japan
| | - Kazunari Arima
- Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Kagoshima, Japan
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Murakami M, Miyazaki M, Ishibashi M, Oda M, Takekuma K, Horino Y. DMP/Brønsted Acid-Mediated Tandem Oxidation/Cyclization of Homopropargylic Alcohols for Synthesis of Trisubstituted Furans. Synlett 2023. [DOI: 10.1055/a-2047-9765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
A facile, efficient, and metal–free single-flask procedure for the synthesis of trisubstituted furans from simple readily available homopropargylic alcohols is described. The combination of Dess–Martin periodinane (DMP), H2O, and p-TsOH·H2O plays a crucial role in trisubstituted furans formation. The advantages of this method include operation ease, mild reaction conditions, and good functional-group tolerance.
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Affiliation(s)
- Miki Murakami
- Graduate School of Innovative Life Science, University of Toyama - Gofuku Campus, Toyama, Japan
| | - Megumi Miyazaki
- Department of Applied Chemistry and Bioscience, Chitose Institute of Science and Technology, Chitose, Japan
| | - Mayo Ishibashi
- Graduate School of Science and Engineering,, University of Toyama - Gofuku Campus, Toyama, Japan
| | - Mizuki Oda
- Department of Applied Chemistry and Bioscience, Chitose Institute of Science and Technology, Chitose, Japan
| | - Karin Takekuma
- Department of Applied Chemistry and Bioscience, Chitose Institute of Science and Technology, Chitose, Japan
| | - Yoshikazu Horino
- Department of Chemistry, Chitose Institute of Science and Technology, Chitose, Japan
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Horino Y, Korenaga T. Corrigendum: Versatile Reactivity of Metalloid-Substituted π-Allylpalladium Species. CHEM REC 2022; 22:e202200049. [PMID: 35332657 DOI: 10.1002/tcr.202200049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
π-Allylpalladium complexes can not only serve as electrophilic allylating agents for a broad range of nucleophiles, but also nucleophilic allylating agents for electrophiles depending on their electronic environments. In contrast to these typical reactivities of π-allylpalladium complexes, silylated and borylated π-allylpalladium species show unique reactivities that can allow versatile transformations in addition to simple allylation. Herein, four different types of transformations that are in principle achieved via the inherently reactive silylated and borylated π-allylpalladium species as common intermediates are described. An appropriate selection of ligands of the silylated and borylated π-allylpalladium species can allow control over the reaction pathways.
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Affiliation(s)
- Yoshikazu Horino
- Department of Applied Chemistry and Bioscience, Chitose Institute of Science and Technology, Bibi 65-758, Chitose, Hokkaido, 066-8655, Japan
| | - Toshinobu Korenaga
- Department of Chemistry and Bioengineering, Iwate University, Morioka, Iwate, 020-8551, Japan
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Abe H, Jeelani I, Yonoki A, Imai H, Horino Y. Synthesis of Chloro-Substituted 6H-Dibenzo[b,d]pyran-6-one Natural Products, Graphislactone G, and Palmariols A and B. Chem Pharm Bull (Tokyo) 2021; 69:781-788. [PMID: 34334522 DOI: 10.1248/cpb.c21-00316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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
A palladium-mediated intramolecular aryl-aryl coupling reaction was applied to the total synthesis of the bioactive natural products, graphislactone G (1), and palmariols A (2) and B (3), which possess an unusual chloro-subsutituent on the 6H-dibenzo[b,d]pyran-6-one skeleton. Based on the transition state model of the coupling reaction, the mechanistic aspect for the regioselectivity of the aryl-aryl coupling reaction is also discussed.
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Affiliation(s)
- Hitoshi Abe
- Faculty of Engineering, University of Toyama
| | - Ishtiaq Jeelani
- Graduate School of Innovative Life Science, University of Toyama
| | | | - Haruka Imai
- Graduate School of Innovative Life Science, University of Toyama
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Imai H, Koyama R, Horino Y, Abe H. Preparation of Isodehydrodigallic Acid Using Ullmann Condensation. Chem Pharm Bull (Tokyo) 2021; 69:298-301. [PMID: 33642480 DOI: 10.1248/cpb.c20-00937] [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
Isodehydrodigallic acid, which is an important component of several ellagitannin compounds, was easily synthesized using a classical Ullmann condensation reaction.
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Affiliation(s)
- Haruka Imai
- Graduate School of Innovative Life Science, University of Toyama
| | - Ryo Koyama
- Faculty of Engineering, University of Toyama
| | | | - Hitoshi Abe
- Faculty of Engineering, University of Toyama
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Horino Y, Sakamoto J, Murakami M, Sugata M. Synthesis of (Z)-Alkene-Containing Linear Conjugated Dienyl Homoallylic Alcohols by a Palladium-Catalyzed Three-Component Reaction. Synlett 2020. [DOI: 10.1055/s-0040-1707468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
A synthesis of (Z)-alkene-containing linear conjugated dienyl homoallylic alcohols by using a palladium-catalyzed three-component reaction has been developed. This method shows good functional-group compatibility and generality, with high diastereoselectivity. Additionally, in many cases, the present method controls the alkene stereochemistry of the newly formed C–C bond and overcomes the inherent preference for (E)-alkene formation, giving (Z,E)- and (Z,Z)-products.
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Horino Y, Murakami M, Ishibashi M, Lee JH, Watanabe A, Matsumoto R, Abe H. Trialkylborane-Mediated Propargylation of Aldehydes Using γ-Stannylated Propargyl Acetates. Org Lett 2019; 21:9564-9568. [DOI: 10.1021/acs.orglett.9b03710] [Citation(s) in RCA: 2] [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: 11/30/2022]
Affiliation(s)
- Yoshikazu Horino
- Graduate School of Science and Engineering, University of Toyama 3190 Gofuku, Toyama 930-8555, Japan
| | - Miki Murakami
- Graduate School of Science and Engineering, University of Toyama 3190 Gofuku, Toyama 930-8555, Japan
| | - Mayo Ishibashi
- Graduate School of Science and Engineering, University of Toyama 3190 Gofuku, Toyama 930-8555, Japan
| | - Jun Hee Lee
- Department of Advanced Materials Chemistry, Dongguk University, Gyeongju Campus, Gyeongju 38066, Republic of Korea
| | - Airi Watanabe
- Graduate School of Science and Engineering, University of Toyama 3190 Gofuku, Toyama 930-8555, Japan
| | - Rio Matsumoto
- Graduate School of Science and Engineering, University of Toyama 3190 Gofuku, Toyama 930-8555, Japan
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Tomohara K, Hasegawa N, Adachi I, Horino Y, Nose T. Early identification of promiscuous attributes of aldose reductase inhibitors using a DMSO-perturbation assay. Bioorg Med Chem Lett 2019; 30:126815. [PMID: 31744675 DOI: 10.1016/j.bmcl.2019.126815] [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] [Received: 08/05/2019] [Revised: 10/11/2019] [Accepted: 11/08/2019] [Indexed: 12/14/2022]
Abstract
Aldose reductase (AR) inhibitors are used clinically to treat long-term diabetic complications. Previous studies reported a series of AR inhibitory candidates, but unfortunately the mode of inhibition was poorly described due mainly to the lack of readily available methods for evaluating the specificity. The present study examined the AR inhibitory effects of novel synthetic hydantoins and their structural relatives, some of which were obtained from chemically engineered extracts of natural plants, and discovered several novel AR inhibitors with moderate inhibitory activity. The identified inhibitors were then subjected to a two-step mechanistic characterization using a detergent-addition assay and our novel dimethyl sulfoxide (DMSO)-perturbation assay. The detergent-addition assay revealed aggregation-based inhibitors, and the subsequent DMSO-perturbation assay identified nonspecific binding inhibitors. Thus, the present study demonstrates the usefulness of the DMSO-perturbation screen for identifying nonspecific binding characteristics of AR inhibitors.
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Affiliation(s)
- Keisuke Tomohara
- Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Naoto Hasegawa
- Faculty of Pharmacy and Pharmaceutical Science, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Isao Adachi
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Yoshikazu Horino
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Takeru Nose
- Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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Tomohara K, Adachi I, Horino Y, Kesamaru H, Abe H, Suyama K, Nose T. DMSO-Perturbing Assay for Identifying Promiscuous Enzyme Inhibitors. ACS Med Chem Lett 2019; 10:923-928. [PMID: 31223449 DOI: 10.1021/acsmedchemlett.9b00093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 05/10/2019] [Indexed: 01/09/2023] Open
Abstract
In search for enzyme inhibitors, we often encounter "promiscuous" enzyme inhibitors exhibiting nonspecific binding property toward enzyme active site. Therefore, inhibitory candidates should be mechanistically characterized as early as possible in discovery processes. However, there remains a lack of highly reliable and readily available methodology to evaluate specificity of initial hits inhibitors. The present study developed and established a novel DMSO-perturbing assay to identify promiscuous enzyme inhibitors. The assay successfully identified nonspecific binding inhibitors with a broad scope, typically by the attenuation of inhibitory activity by the influence of DMSO-addition. This attenuation would be attributed to the nonspecific binding property of inhibitors toward both productive and nonproductive (nondenatured) states of enzymes in perturbation solution. This working hypothesis was supported by spectroscopic analyses of enzyme conformations and analyses of solvent effects on perturbation. Overall, these results provided a novel concept of the DMSO-perturbing assay.
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Affiliation(s)
- Keisuke Tomohara
- Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Isao Adachi
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Yoshikazu Horino
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Hitoshi Kesamaru
- Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hitoshi Abe
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Keitaro Suyama
- Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takeru Nose
- Faculty of Arts and Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- Graduate School of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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12
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Horino Y, Murakami M, Aimono A, Lee JH, Abe H. Trialkylborane-Mediated Multicomponent Reaction for the Diastereoselective Synthesis of Anti-δ,δ-Disubstituted Homoallylic Alcohols. Org Lett 2019; 21:476-480. [PMID: 30596237 DOI: 10.1021/acs.orglett.8b03761] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The trialkylborane/O2-mediated reaction of propargyl acetates having a tributylstannyl group at an alkyne terminus with aldehydes in a THF-H2O solvent system gave anti-δ,δ-disubstituted homoallylic alcohols with good to high diastereoselectivity. Intriguingly, two alkyl groups derived from trialkylborane were embedded into the reaction product. The trialkylborane plays a key role not only as a radical initiator but also as a source of alkyl radicals.
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Affiliation(s)
- Yoshikazu Horino
- Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
| | - Miki Murakami
- Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
| | - Ataru Aimono
- Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
| | - Jun Hee Lee
- Department of Advanced Materials Chemistry , Dongguk University , Gyeongju 780-714 , Republic of Korea
| | - Hitoshi Abe
- Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
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Endo S, Xia S, Suyama M, Morikawa Y, Oguri H, Hu D, Ao Y, Takahara S, Horino Y, Hayakawa Y, Watanabe Y, Gouda H, Hara A, Kuwata K, Toyooka N, Matsunaga T, Ikari A. Correction to Synthesis of Potent and Selective Inhibitors of Aldo-Keto Reductase 1B10 and Their Efficacy against Proliferation, Metastasis, and Cisplatin Resistance of Lung Cancer Cells. J Med Chem 2018; 61:1380. [PMID: 29323483 DOI: 10.1021/acs.jmedchem.7b01911] [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: 11/29/2022]
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Horino Y, Sugata M, Mutsuura I, Tomohara K, Abe H. Controllable Stereoselective Synthesis of (Z)- and (E)-Homoallylic Alcohols Using a Palladium-Catalyzed Three-Component Reaction. Org Lett 2017; 19:5968-5971. [DOI: 10.1021/acs.orglett.7b02979] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Yoshikazu Horino
- Graduate
School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Miki Sugata
- Graduate
School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Itaru Mutsuura
- Graduate
School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Keisuke Tomohara
- Department
of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Hitoshi Abe
- Graduate
School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
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Endo S, Xia S, Suyama M, Morikawa Y, Oguri H, Hu D, Ao Y, Takahara S, Horino Y, Hayakawa Y, Watanabe Y, Gouda H, Hara A, Kuwata K, Toyooka N, Matsunaga T, Ikari A. Synthesis of Potent and Selective Inhibitors of Aldo-Keto Reductase 1B10 and Their Efficacy against Proliferation, Metastasis, and Cisplatin Resistance of Lung Cancer Cells. J Med Chem 2017; 60:8441-8455. [PMID: 28976752 DOI: 10.1021/acs.jmedchem.7b00830] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Aldo-keto reductase 1B10 (AKR1B10) is overexpressed in several extraintestinal cancers, particularly in non-small-cell lung cancer, where AKR1B10 is a potential diagnostic marker and therapeutic target. Selective AKR1B10 inhibitors are required because compounds should not inhibit the highly related aldose reductase that is involved in monosaccharide and prostaglandin metabolism. Currently, 7-hydroxy-2-(4-methoxyphenylimino)-2H-chromene-3-carboxylic acid benzylamide (HMPC) is known to be the most potent competitive inhibitor of AKR1B10, but it is nonselective. In this study, derivatives of HMPC were synthesized by removing the 4-methoxyphenylimino moiety and replacing the benzylamide with phenylpropylamide. Among them, 4c and 4e showed higher AKR1B10 inhibitory potency (IC50 4.2 and 3.5 nM, respectively) and selectivity than HMPC. The treatments with the two compounds significantly suppressed not only migration, proliferation, and metastasis of lung cancer A549 cells but also metastatic and invasive potentials of cisplatin-resistant A549 cells.
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Affiliation(s)
- Satoshi Endo
- Laboratory of Biochemistry, Gifu Pharmaceutical University , Gifu 501-1196, Japan
| | - Shuang Xia
- Graduate School of Innovative Life Science, University of Toyama , Toyama 930-8555, Japan
| | - Miho Suyama
- Laboratory of Biochemistry, Gifu Pharmaceutical University , Gifu 501-1196, Japan
| | - Yoshifumi Morikawa
- Laboratory of Biochemistry, Gifu Pharmaceutical University , Gifu 501-1196, Japan
| | - Hiroaki Oguri
- Laboratory of Biochemistry, Gifu Pharmaceutical University , Gifu 501-1196, Japan
| | - Dawei Hu
- Graduate School of Innovative Life Science, University of Toyama , Toyama 930-8555, Japan
| | - Yoshinori Ao
- Graduate School of Science and Engineering, University of Toyama , Toyama 930-8555, Japan
| | - Satoyuki Takahara
- Graduate School of Innovative Life Science, University of Toyama , Toyama 930-8555, Japan
| | - Yoshikazu Horino
- Graduate School of Science and Engineering, University of Toyama , Toyama 930-8555, Japan
| | - Yoshihiro Hayakawa
- Division of Pathogenic Biochemistry, Institute of Natural Medicine, University of Toyama , Toyama 930-0194, Japan
| | - Yurie Watanabe
- School of Pharmacy, Showa University , Tokyo 142-8555, Japan
| | - Hiroaki Gouda
- School of Pharmacy, Showa University , Tokyo 142-8555, Japan
| | - Akira Hara
- Faculty of Engineering, Gifu University , Gifu 501-1193, Japan
| | - Kazuo Kuwata
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University , Gifu 501-1193, Japan
| | - Naoki Toyooka
- Graduate School of Innovative Life Science, University of Toyama , Toyama 930-8555, Japan.,Graduate School of Science and Engineering, University of Toyama , Toyama 930-8555, Japan
| | - Toshiyuki Matsunaga
- Laboratory of Biochemistry, Gifu Pharmaceutical University , Gifu 501-1196, Japan
| | - Akira Ikari
- Laboratory of Biochemistry, Gifu Pharmaceutical University , Gifu 501-1196, Japan
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Mori H, Wada R, Takahara S, Horino Y, Izumi H, Ishimoto T, Yoshida T, Mizuguchi M, Obita T, Gouda H, Hirono S, Toyooka N. A novel serine racemase inhibitor suppresses neuronal over-activation in vivo. Bioorg Med Chem 2017; 25:3736-3745. [PMID: 28533113 DOI: 10.1016/j.bmc.2017.05.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 04/12/2017] [Revised: 05/02/2017] [Accepted: 05/05/2017] [Indexed: 12/11/2022]
Abstract
Serine racemase (SRR) is an enzyme that produces d-serine from l-serine. d-Serine acts as an endogenous coagonist of NMDA-type glutamate receptors (NMDARs), which regulate many physiological functions. Over-activation of NMDARs induces excitotoxicity, which is observed in many neurodegenerative disorders and epilepsy states. In our previous works on the generation of SRR gene knockout (Srr-KO) mice and its protective effects against NMDA- and Aβ peptide-induced neurodegeneration, we hypothesized that the regulation of NMDARs' over-activation by inhibition of SRR activity is one such therapeutic strategy to combat these disease states. In the previous study, we performed in silico screening to identify four compounds with inhibitory activities against recombinant SRR. Here, we synthesized 21 derivatives of candidate 1, one of four hit compounds, and performed screening by in vitro evaluations. The derivative 13J showed a significantly lower IC50 value in vitro, and suppressed neuronal over-activation in vivo.
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Affiliation(s)
- Hisashi Mori
- Graduate School of Innovative Life Science, University of Toyama, Toyama 930-0194, Japan; Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Ryogo Wada
- Graduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan
| | - Satoyuki Takahara
- Graduate School of Innovative Life Science, University of Toyama, Toyama 930-8555, Japan
| | - Yoshikazu Horino
- Graduate School of Innovative Life Science, University of Toyama, Toyama 930-8555, Japan
| | - Hironori Izumi
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Tetsuya Ishimoto
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Tomoyuki Yoshida
- Graduate School of Innovative Life Science, University of Toyama, Toyama 930-0194, Japan; Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Mineyuki Mizuguchi
- Graduate School of Innovative Life Science, University of Toyama, Toyama 930-0194, Japan; Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Takayuki Obita
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Hiroaki Gouda
- School of Pharmacy, Showa University, Tokyo 142-8555, Japan
| | - Shuichi Hirono
- School of Pharmacy, Kitasato University, Tokyo 108-8641, Japan
| | - Naoki Toyooka
- Graduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan; Graduate School of Innovative Life Science, University of Toyama, Toyama 930-8555, Japan.
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Horino Y. Novel Carbon-Carbon Bond Forming Reactions by Allylpalladium Intermediates Possessing Silyl, Boryl, or Stannyl Groups. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yoshikazu Horino
- Department of Environmental Applied Chemistry, University of Toyama
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Affiliation(s)
- Hitoshi Abe
- Graduate School of Science and Engineering, University of Toyama
| | - Takanori Nagai
- Graduate School of Science and Engineering, University of Toyama
| | - Haruka Imai
- Graduate School of Science and Engineering, University of Toyama
| | - Yoshikazu Horino
- Graduate School of Science and Engineering, University of Toyama
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Ono S, Nakai T, Kuroda H, Miyatake R, Horino Y, Abe H, Umezaki M, Oyama H. Site-selective chemical modification of chymotrypsin using peptidyl derivatives bearing optically active diphenyl 1-amino-2-phenylethylphosphonate: Stereochemical effect of the diphenyl phosphonate moiety. Biopolymers 2016; 106:521-30. [PMID: 26615968 DOI: 10.1002/bip.22790] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 08/30/2015] [Revised: 10/30/2015] [Accepted: 11/02/2015] [Indexed: 01/24/2023]
Abstract
Diphenyl (α-aminoalkyl)phosphonates act as mechanism-based inhibitors against serine proteases by forming a covalent bond with the hydroxy group of the active center Ser residue. Because the covalent bond was found to be broken and replaced by 2-pyridinaldoxime methiodide (2PAM), we employed a peptidyl derivative bearing diphenyl 1-amino-2-phenylethylphosphonate moiety (Phe(p) (OPh)2 ) to target the active site of chymotrypsin and to selectively anchor to Lys175 in the vicinity of the active site. Previously, it was reported that the configuration of the α-carbon of phosphorus in diphenyl (α-aminoalkyl)phosphonates affects the inactivation reaction of serine proteases, i.e., the (R)-enantiomeric diphenyl phosphonate is comparable to l-amino acids and it effectively reacts with serine proteases, whereas the (S)-enantiomeric form does not. In this study, we evaluated the stereochemical effect of the phosphonate moiety on the selective chemical modification. Epimeric dipeptidyl derivatives, Ala-(R or S)-Phe(p) (OPh)2 , were prepared by separation with RP-HPLC. A tripeptidyl (R)-epimer (Ala-Ala-(R)-Phe(p) (OPh)2 ) exhibited a more potent inactivation ability against chymotrypsin than the (S)-epimer. The enzyme inactivated by the (R)-epimer was more effectively reactivated with 2PAM than the enzyme inactivated by the (S)-epimer. Finally, N-succinimidyl (NHS) active ester derivatives, NHS-Suc-Ala-Ala- (R or S)-Phe(p) (OPh)2 , were prepared, and we evaluated their action when modifying Lys175 in chymotrypsin. We demonstrated that the epimeric NHS derivative that possessed the diphenyl phosphonate moiety with the (R)-configuration effectively modified Lys175 in chymotrypsin, whereas that with the (S)-configuration did not. These results demonstrate the utility of peptidyl derivatives that bear an optically active diphenyl phosphonate moiety as affinity labeling probes in protein bioconjugation. © 2015 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 106: 521-530, 2016.
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Affiliation(s)
- Shin Ono
- Genome Biotechnology Laboratory, Kanazawa Institute of Technology, Hakusan, 924-0838, Japan
| | - Takahiko Nakai
- Graduate School of Science and Engineering, University of Toyama, Toyama, 930-8555, Japan
| | - Hirofumi Kuroda
- Department of General Education, Ishikawa National College of Technology, Ishikawa, 929-0392, Japan
| | - Ryuta Miyatake
- Graduate School of Science and Engineering, University of Toyama, Toyama, 930-8555, Japan
| | - Yoshikazu Horino
- Graduate School of Science and Engineering, University of Toyama, Toyama, 930-8555, Japan
| | - Hitoshi Abe
- Graduate School of Science and Engineering, University of Toyama, Toyama, 930-8555, Japan
| | - Masahito Umezaki
- Institute of Natural Medicine, University of Toyama, Toyama, 930-0194, Japan
| | - Hiroshi Oyama
- Faculty of Science and Engineering, Setsunan University, Osaka, 572-8508, Japan
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Horino Y, Sugata M, Abe H. Corrigendum: Palladium-Catalyzed Three-Component Reaction of 3-(Tri- n- butylstannyl)allyl Acetates, Aldehydes, and Triorganoboranes: An Alternative to the Carbonyl Allylation Using α,γ-Substituted Allylic Tin Reagents. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600530] [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: 11/06/2022]
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Horino Y, Sugata M, Abe H. Palladium-Catalyzed Three-Component Reaction of 3-(Tri-n- butylstannyl)allyl Acetates, Aldehydes, and Triorganoboranes: An Alternative to the Carbonyl Allylation Using α,γ-Substituted Allylic Tin Reagents. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501049] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abe H, Kobayashi N, Kadoshima Y, Takeuchi Y, Harayama T, Horino Y. Synthesis of 2,3,9,10-Tetraoxygenated Benzo[c]phenanthridine Derivatives via Palladium-Mediated Aryl-Aryl Coupling Reaction. HETEROCYCLES 2016. [DOI: 10.3987/com-15-s(t)56] [Citation(s) in RCA: 2] [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]
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Horino Y, Aimono A, Abe H. Pd-Catalyzed Three-Component Reaction of 3-(Pinacolatoboryl)ally Acetates, Aldehydes, and Organoboranes: A New Entry to Stereoselective Synthesis of (Z)-anti-Homoallylic Alcohols. Org Lett 2015; 17:2824-7. [DOI: 10.1021/acs.orglett.5b01244] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshikazu Horino
- Department of Applied Chemistry,
Graduate School of Science and Engineering, University of Toyama, Gofuku, Toyama 930-8555, Japan
| | - Ataru Aimono
- Department of Applied Chemistry,
Graduate School of Science and Engineering, University of Toyama, Gofuku, Toyama 930-8555, Japan
| | - Hitoshi Abe
- Department of Applied Chemistry,
Graduate School of Science and Engineering, University of Toyama, Gofuku, Toyama 930-8555, Japan
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Abe H, Kamimura M, Komatsu Y, Horino Y. Palladium-Mediated Intramolecular Biaryl Coupling Reaction: Convenient Preparation of Furoquinolinone Derivatives. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)84] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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]
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Horino Y, Takahashi Y, Kobayashi R, Abe H. Palladium-Catalyzed Cyclopropanation of Strained Alkenes with 3-Pinacolatoboryl-1-arylallyl Carboxylates. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403284] [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: 11/06/2022]
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Horino Y, Takahashi Y, Koketsu K, Abe H, Tsuge K. Practical and Convenient Synthesis of 1,6-Di- or 1,2,5,6-Tetra-arylhexa-1,3,5-trienes by the Dimerization of Pd(0)-Complexed Alkenylcarbenes Generated from π-Allylpalladium Intermediates. Org Lett 2014; 16:3184-7. [DOI: 10.1021/ol501643x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshikazu Horino
- Department of Applied Chemistry and ‡Department of Chemistry, Graduate School of
Science and Engineering, University of Toyama, Gofuku, Toyama 930-855, Japan
| | - Yu Takahashi
- Department of Applied Chemistry and ‡Department of Chemistry, Graduate School of
Science and Engineering, University of Toyama, Gofuku, Toyama 930-855, Japan
| | - Kaori Koketsu
- Department of Applied Chemistry and ‡Department of Chemistry, Graduate School of
Science and Engineering, University of Toyama, Gofuku, Toyama 930-855, Japan
| | - Hitoshi Abe
- Department of Applied Chemistry and ‡Department of Chemistry, Graduate School of
Science and Engineering, University of Toyama, Gofuku, Toyama 930-855, Japan
| | - Kiyoshi Tsuge
- Department of Applied Chemistry and ‡Department of Chemistry, Graduate School of
Science and Engineering, University of Toyama, Gofuku, Toyama 930-855, Japan
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Horino Y, Takahashi Y, Nakashima Y, Abe H. Relay catalysis using a gold(i) complex/Brønsted acid binary system for the synthesis of bezoxasiloles. RSC Adv 2014. [DOI: 10.1039/c3ra47149g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Abe H, Takeuchi Y, Maeda K, Matsukihira T, Saga S, Harayama T, Horino Y. Regioselectivity of the Intramolecular Biaryl Coupling Reaction of 3-Substituted Phenyl 2-Iodobenzoate using a Palladium Reagent. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)10] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [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]
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Abe H, Matsukihira T, Saga S, Horino Y. Regioselectivity of the Palladium-Mediated Intramolecular Coupling Reaction of Highly Oxygenated Phenyl Benzoate Derivatives and Application to the Synthesis of Altertenuol. HETEROCYCLES 2014. [DOI: 10.3987/com-13-12859] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Ono S, Murai J, Nakai T, Kuroda H, Horino Y, Yoshimura T, Oyama H, Umezaki M. Site-selective Chemical Modification of Chymotrypsin Using a Peptidyl Diphenyl 1-Amino-2-phenylethylphosphonate Derivative. CHEM LETT 2013. [DOI: 10.1246/cl.130244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shin Ono
- Graduate School of Science and Engineering, University of Toyama
| | - Junya Murai
- Graduate School of Science and Engineering, University of Toyama
| | - Takahiko Nakai
- Graduate School of Science and Engineering, University of Toyama
| | | | - Yoshikazu Horino
- Graduate School of Science and Engineering, University of Toyama
| | | | - Hiroshi Oyama
- Faculty of Science and Engineering, Setsunan University
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Abe H, Matsukihira T, Hidaka K, Saga S, Takemura M, Yonoki A, Nishimori T, Horino Y, Harayama T, Takeuchi Y. Synthesis of Nigricanin via Intramolecular Biaryl Coupling Reaction of Functionalized Phenol Benzoate. HETEROCYCLES 2013. [DOI: 10.3987/com-13-12847] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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]
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Shioe K, Ishikura S, Horino Y, Abe H. Facile Preparation of Dehydrodigallic Acid and Its Derivative for the Synthesis of Ellagitannins. Chem Pharm Bull (Tokyo) 2013; 61:1308-14. [DOI: 10.1248/cpb.c13-00458] [Citation(s) in RCA: 11] [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)
- Kazuma Shioe
- Graduate School of Science and Engineering, University of Toyama
| | - Shingo Ishikura
- Graduate School of Science and Engineering, University of Toyama
| | - Yoshikazu Horino
- Graduate School of Science and Engineering, University of Toyama
| | - Hitoshi Abe
- Graduate School of Science and Engineering, University of Toyama
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Horino Y, Homura N, Inoue K, Yoshikawa S. Cyclopropanation of Strained Alkenes by Palladium-Catalyzed Reaction of 3-Trimethylsilyl- or 3-Pinacolatoboryl-1-arylallyl Acetates. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100806] [Citation(s) in RCA: 22] [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: 11/09/2022]
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37
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Abe H, Kawai T, Komatsu Y, Takeuchi Y, Horino Y. SYNTHESIS OF NEO-tANSHINLACTONE VIA THE PALLADIUM-MEDIATED INTRAMOLECULAR BIARYL COUPLING REACTION. HETEROCYCLES 2012. [DOI: 10.3987/com-12-s(n)87] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [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]
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Abe H, Takeuchi Y, Matsukihira T, Fukumoto T, Horino Y, Harayama T. Highly Regioselective Intramolecular Biaryl Coupling Reaction of a Phenyl Benzoate Derivative for the Synthesis of Graphislactone G. HETEROCYCLES 2012. [DOI: 10.3987/com-11-s(p)34] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [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]
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Kuroda S, Oda M, Matsumoto N, Zhang Y, Abe T, Horino Y, Fujiwara Y. Synthesis and Spectroscopic Properties of 1,6-Methano[10]annulene-Fused and 2,4-Dimethyl-7,12-methano-3H-cyclohepta[10]annulen-3-one-Fused 10H-Pyrrolo[1,2-a]perimidin-10-ones. HETEROCYCLES 2012. [DOI: 10.3987/com-11-s(p)6] [Citation(s) in RCA: 5] [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]
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40
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Kuroda S, Kasai R, Nagaya R, Miyatake R, Horino Y, Matsumoto N, Oda M. Duplicated ring enlargement of 4,9-methanothia[11]annulene to 6,11-methanothia[15]annulene. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.11.072] [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: 10/18/2022]
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Fukumi K, Chayahara A, Adachi M, Kadono K, Sakaguchi T, Miya M, Horino Y, Kitamura N, Hayakawa J, Yamashita H, Fujii K, Satou M. Formation of Au Colloid Particles in Silica Glass by Ion Implantation. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-235-389] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTFormation of Au colloid particles and their optical property have been investigated in silica glasses implanted with Au+ ions at an acceleration energy of 1.5MeV and fluence levels of 1016-1017 ions/cm2. The Au colloid particles are formed in the as-implanted glasses. It is inferred that the average radius of Au colloid particles depends on the fluence level, although the fluence level does not affect the distribution of Au atomic concentration. The heat-treatment little affects the Au atomic distribution. The Au colloid particles grow to 4.3nm in average radius during heat treatment. It is revealed that the large nonlinear optical property of the Au+ -ion-implanted silica glass is attributed to the high concentration of the Au colloid particles in the narrow region.
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Kuroda S, Oda M, Tamura N, Miyatake R, Matsumoto N, Horino Y, Miyawaki D. Synthesis and Emission Properties of 1,6-Methano[10]annulene-3,4-dicarboximides. HETEROCYCLES 2011. [DOI: 10.3987/com-11-12135] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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]
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Horino Y, Kuroda S, Nakashima Y, Hashimoto K. Gold-Catalyzed Stereoselective Synthesis of Di- or Trisubstituted Olefins Possessing a 1,4-Diene Framework via Intramolecular Allylation of Alkynes. Synlett 2010. [DOI: 10.1055/s-0030-1259038] [Citation(s) in RCA: 10] [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: 10/18/2022]
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Abstract
The gold(I)-catalyzed cycloisomerization of 1,5-enynes and 1,4-allylallenes to tetracyclododecane and tetracyclotridecane derivatives, respectively, is reported. Complexation of the cationic gold(I) complex to either the alkyne or allene moiety induces an intramolecular addition of the alkene, leading to a gold(I)-stabilized carbenoid intermediate. This intermediate undergoes a formal sp(3) C-H insertion to generate the tetracyclic adduct. A series of deuterium labeling experiments showed that the C-H functionalization step proceeds with an inverse kinetic isotope effect.
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Affiliation(s)
- Yoshikazu Horino
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Takuya Yamamoto
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Kohki Ueda
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Shigeyasu Kuroda
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720
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Kuroda S, Obata Y, Thanh NC, Miyatake R, Horino Y, Oda M. Synthesis and structure of polyunsaturated [10]paracyclophane annulated by two azulene rings. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.11.067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Horino Y, Takata Y, Hashimoto K, Kuroda S, Kimura M, Tamaru Y. Gold-catalyzed intermolecular addition of alcohols toward the allenic bond of 4-vinylidene-2-oxazolidinones. Org Biomol Chem 2008; 6:4105-7. [DOI: 10.1039/b808921c] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kimura M, Horino Y, Mori M, Tamaru Y. Chameleon Reactivity of the Allene Bond of 4-Vinylidene-2-oxazolidinone: Novel Through-Space Conjugative Nucleophilic Addition of Electron-Rich Alkenes and Hetero-Nucleophiles. Chemistry 2007; 13:9686-702. [PMID: 17768719 DOI: 10.1002/chem.200700691] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The Calpha==Cbeta double bond of allene carbamates 1 serves as an electron acceptor similar to the double bond of conjugated enones by means of a through-space interaction with the N--SO2 bond; the carbamate double bond is thus subject to nucleophilic addition for a wide variety of nucleophiles, which proceeds under mild conditions by heating at 70-100 degrees C. Depending on the kind of nucleophiles, 1 displays three different reaction modes: 1) Typically enol ethers and allylsilanes promote 1,3-sulfonyl migration of 1 and undergo the inverse electron demand Diels-Alder reaction with the 1-aza-1,3-butadiene intermediates II thus formed to furnish bicyclic 2-alkoxy-5-sulfonyltetrahydropyridines 2 and 2-silylmethyl-5-sulfonyltetrahydropyridines 3, respectively, with high regio- and stereoselectivity and retention of configuration of the double bonds of these electron-rich alkenes; 2) silanes (RnSiH4-n, n=1-3) and thiols deliver the hydride and the thiolate at the Cbeta carbon and promote the 1,3-sulfonyl migration, followed by protonation of the thus-formed carbamate anion (Z)-III to provide, for example, (Z)-4 a and (Z)-4 j, respectively; 3) alcohols simply add to the Calpha==Cbeta double bond and provide (E)-6. Usually, the reaction with alcohols is accompanied by the second pathway, giving rise to, for example, (Z)-4 b in addition to (E)-6 b. Phenol engages in the third pathway and provides (E)-6 g exclusively. Heteroaromatics, such as furans and benzofurans follow the first pathway, however, in a different regioselectivity from enol ethers and allylsilanes, delivering the oxygen atom at the 3-position of 5-sulfonyltetrahydropyridines (2 g and 2 h). Indoles, on the other hand, show a dichotomy, equally enjoying the first and the third pathways and provide mixtures of (E)-7 and (E)-8, respectively.
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Affiliation(s)
- Masanari Kimura
- Graduate School of Science and Technology, Department of Applied Chemistry, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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