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Kumar M, Jha A, Bharti K, Manjit M, Kumbhar P, Dhapte-Pawar V, Mishra B. Lipid-coated nanocrystals of paclitaxel as dry powder for inhalation: Characterization, in-vitro performance, and pharmacokinetic assessment. Colloids Surf B Biointerfaces 2024; 237:113865. [PMID: 38520950 DOI: 10.1016/j.colsurfb.2024.113865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/07/2024] [Accepted: 03/19/2024] [Indexed: 03/25/2024]
Abstract
BACKGROUND Nanocrystals can be produced as a dry powder for inhalation (DPIs) to deliver high doses of drug to the lungs, owing to their high payload and stability to the shear stress of aerosolization force. Furthermore, lipid-coated nanocrystals can be formulated to improve the drug accumulation and retention in lung. OBJECTIVE The present work involved the fabrication of paclitaxel nanocrystals using hydrophilic marine biopolymer fucoidan as a stabilizer. Thereafter, fabricated nanocrystals (FPNC) were surface-modified with phospholipid to give lipid-coated nanocrystals (Lipo-NCs). METHODS The nanocrystals were fabricated by antisolvent crystallization followed by the probe sonication. The lipid coating was achieved by thin film hydration followed ultrasonic dispersion technique. Prepared nanocrystals were lyophilized to obtain a dry powder of FPNC and Lipo-NCs, used later for physicochemical, microscopic, and spectroscopic characterization to confirm the successful formation of desired nanocrystals. In-vitro and in-vivo investigations were also conducted to determine the role of nanocrystal powder in pulmonary drug delivery. RESULTS Lipo-NCs exhibited slower drug release, excellent flow properties, good aerosolization performance, higher drug distribution, and prolonged retention in the lungs compared to FPNC and pure PTX. CONCLUSION Lipid-coated nanocrystals can be a novel formulation for the maximum localization of drugs in the lungs, thereby enhancing therapeutic effects and avoiding systemic side effects in lung cancer therapy.
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Affiliation(s)
- Manish Kumar
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India
| | - Abhishek Jha
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India
| | - Kanchan Bharti
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India
| | - Manjit Manjit
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India
| | - Pradnya Kumbhar
- Department of Pharmaceutics, Poona College of Pharmacy, Bharati Vidyapeeth (Deemed to be University), Pune, Maharashtra 411038, India
| | - Vividha Dhapte-Pawar
- Department of Pharmaceutics, Poona College of Pharmacy, Bharati Vidyapeeth (Deemed to be University), Pune, Maharashtra 411038, India
| | - Brahmeshwar Mishra
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology, (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India.
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Janicki M, Lozynski M. Toward an ab initio potential energy surface for paclitaxel: A C-13 isoserine side chain conformational study. J Mol Graph Model 2017; 73:94-100. [PMID: 28242582 DOI: 10.1016/j.jmgm.2017.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 02/03/2017] [Accepted: 02/17/2017] [Indexed: 10/20/2022]
Abstract
(S)-3-Methyl-3-butenyl-(2R,3S)-N-benzoyl-3-phenylisoserinate is used as a model of the C-13 side chain, an essential subunit for the cytotoxicity of the diterpenoid paclitaxel, a chemotherapeutic drug used in the treatment of cancer. The potential energy surface (PES), calculated using a density functional theory method (DFT) and refined with MP2 single-point energy calculations, based on B3LYP geometries, was evaluated. Twelve intramolecular hydrogen bond patterns were identified for 103 in vacuo conformers. The most stable subset of these structures was found to have cooperative NH ⋯ OH ⋯ OC(O) motifs and six minima of importance that lie within 1.2kcal/mol of each other. The oxygen atoms of the ester groups effectively compete with the 2'-oxygen as a proton acceptor of NH to form stable internal hydrogen bonded structures. Additionally, the conventional OH ⋯ OC(N) hydrogen bond, which is represented by almost one third of the located minima, donates a number of stable conformers. However, the PES of the conformationally flexible model is highly dependent on the polarity of the environment. For example, the OH ⋯ OC(N) feature dominates over the cooperative motif in water. The side chain of the experimental T-taxol shaped structure agrees nicely with the respective theoretical lowest energy minimum. The π-π interactions of the phenyl rings and ethylene moiety of this structure are also discussed.
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Affiliation(s)
- Maciej Janicki
- Adam Mickiewicz University, Faculty of Biology, Institute of Molecular Biology and Biotechnology, 61-614 Poznan, Poland
| | - Marek Lozynski
- Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, 60-965 Poznan, Poland.
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Janicki M, Lozynski M. Toward ab initio potential energy surface for paclitaxel: a baccatin III conformational study. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Maciej Janicki
- Adam Mickiewicz University; Faculty of Biology, Institute of Molecular Biology and Biotechnology; 61-614 Poznan Poland
| | - Marek Lozynski
- Poznan University of Technology; Faculty of Chemical Technology, Institute of Chemical Technology and Engineering; 60-965 Poznan Poland
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Polavarapu PL. Determination of the Absolute Configurations of Chiral Drugs Using Chiroptical Spectroscopy. Molecules 2016; 21:molecules21081056. [PMID: 27529201 PMCID: PMC6273303 DOI: 10.3390/molecules21081056] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/02/2016] [Accepted: 08/04/2016] [Indexed: 02/07/2023] Open
Abstract
Chiroptical spectroscopy has emerged as a promising tool for the determination of absolute configurations and predominant conformations of chiral molecules in academic laboratories. This promise has led to the adaption of chiroptical spectroscopic methods as valuable tools in chiral drug discovery research programs of the pharmaceutical industry. Most major pharmaceutical companies have invested in in-house chiroptical spectroscopy applications and reported successful outcomes. In the context of continuously increasing applications of chiroptical spectroscopy for chiral molecular structure determination, a review of recent developments and applications for chiral drugs is presented in this manuscript.
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Izumi H, Nafie LA, Dukor RK. Three-Dimensional Chemical Structure Search Using the Conformational Code for Organic Molecules (CCOM) Program. Chirality 2016; 28:370-5. [DOI: 10.1002/chir.22596] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 02/25/2016] [Accepted: 02/25/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Hiroshi Izumi
- National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Ibaraki Japan
| | - Laurence A. Nafie
- Department of Chemistry; Syracuse University; Syracuse New York USA
- BioTools Inc.; Jupiter Florida USA
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Batista Jr. JM, Blanch EW, Bolzani VDS. Recent advances in the use of vibrational chiroptical spectroscopic methods for stereochemical characterization of natural products. Nat Prod Rep 2015; 32:1280-302. [DOI: 10.1039/c5np00027k] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A comprehensive look into application of vibrational optical activity methods for conformational and configurational assignments in natural product molecules over the last 15 years is provided.
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Affiliation(s)
- João M. Batista Jr.
- Department of Chemistry
- Federal University of São Carlos – UFSCar
- São Carlos
- Brazil
| | - Ewan W. Blanch
- School of Applied Sciences
- RMIT University
- Melbourne
- Australia
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Hongen T, Taniguchi T, Nomura S, Kadokawa JI, Monde K. In Depth Study on Solution-State Structure of Poly(lactic acid) by Vibrational Circular Dichroism. Macromolecules 2014. [DOI: 10.1021/ma501020s] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Takahiro Hongen
- Faculty
of Advanced Life Science, Frontier Research Center for Post-Genome
Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
| | - Tohru Taniguchi
- Faculty
of Advanced Life Science, Frontier Research Center for Post-Genome
Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
| | - Shintaro Nomura
- Department
of Chemistry, Biotechnology, and Chemical Engineering, Graduate School
of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Jun-ichi Kadokawa
- Department
of Chemistry, Biotechnology, and Chemical Engineering, Graduate School
of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Kenji Monde
- Faculty
of Advanced Life Science, Frontier Research Center for Post-Genome
Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
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Asai T, Taniguchi T, Yamamoto T, Monde K, Oshima Y. Structures of Spiroindicumides A and B, Unprecedented Carbon Skeletal Spirolactones, and Determination of the Absolute Configuration by Vibrational Circular Dichroism Exciton Approach. Org Lett 2013; 15:4320-3. [DOI: 10.1021/ol401741z] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Teigo Asai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-yama, Aoba-ku, Sendai 980-8578, Japan, and Faculty of Advanced Life Science, Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
| | - Tohru Taniguchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-yama, Aoba-ku, Sendai 980-8578, Japan, and Faculty of Advanced Life Science, Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
| | - Takashi Yamamoto
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-yama, Aoba-ku, Sendai 980-8578, Japan, and Faculty of Advanced Life Science, Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
| | - Kenji Monde
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-yama, Aoba-ku, Sendai 980-8578, Japan, and Faculty of Advanced Life Science, Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
| | - Yoshiteru Oshima
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-yama, Aoba-ku, Sendai 980-8578, Japan, and Faculty of Advanced Life Science, Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
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Schwartz E, Liégeois V, Koepf M, Bodis P, Cornelissen JJLM, Brocorens P, Beljonne D, Nolte RJM, Rowan AE, Woutersen S, Champagne B. Beta Sheets with a Twist: The Conformation of Helical Polyisocyanopeptides Determined by Using Vibrational Circular Dichroism. Chemistry 2013; 19:13168-74. [DOI: 10.1002/chem.201300073] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 05/07/2013] [Indexed: 11/10/2022]
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10
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Castaings A, Marchon JC, Cavagnat D, Buffeteau T. Conformational Equilibria of Bridled Chiroporphyrins in Solution Investigated by Vibrational Circular Dichroism. Chirality 2013; 25:480-6. [DOI: 10.1002/chir.22196] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 05/10/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Anna Castaings
- Laboratoire de Chimie Inorganique et Biologique (UMR E3 CEA-UJF); Institut Nanosciences et Cryogénie, CEA Grenoble; Grenoble France
| | - Jean-Claude Marchon
- Laboratoire de Chimie Inorganique et Biologique (UMR E3 CEA-UJF); Institut Nanosciences et Cryogénie, CEA Grenoble; Grenoble France
| | - Dominique Cavagnat
- Institut des Sciences Moléculaires; Université de Bordeaux 1 (CNRS UMR5255); Talence France
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires; Université de Bordeaux 1 (CNRS UMR5255); Talence France
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11
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Izumi H, Wakisaka A, Nafie LA, Dukor RK. Data mining of supersecondary structure homology between light chains of immunogloblins and MHC molecules: absence of the common conformational fragment in the human IgM rheumatoid factor. J Chem Inf Model 2013; 53:584-91. [PMID: 23394723 DOI: 10.1021/ci300420d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
It is shown that fuzzy search and data mining techniques of supersecondary structure homology for subunits of proteins using conformational code patterns of α-helix-type (3β5α4β) and β-sheet-type (6α4β4β) fragments can be used to extract correlations between fragments of MHC class I molecules and the light chain of immunoglobulins. The new method of conformational pattern analysis with fuzzy search of structural code homology reflects well the shape of main chain rather than secondary structure in comparison with the DSSP method. Further, the data mining technique using the combination of h- and s-fragment patterns can quantify the supersecondary structure homology between any subunits of proteins with different amino acid sequences. Characteristic fragment patterns (string "shhshss"), which were sandwiched between two identical amino acid sequences His and Pro, were found in light chains of various types of immunogloblins, α-chain and β-2 microglobulin of MHC class I and α-chain and β-chain of MHC class II, but not in heavy chains of Fab immunoglobulin fragments and T cell receptors (TCR). Leukocyte immunoglobulin-like receptors (LILR) are related by the conformational fragment (string "shhshss") to β-2 microglobulins as a type of pair forms (string "sohsss"). Further, human IgM rheumatoid factor, one of the immunogloblins, did not strongly exhibit the conformational fragment pattern. Nonclassic MHC class I molecules CD1D, MIC-A, and MIC-B, which have functions to activate NKT, NK, and T cells, did not also clearly show the patterns. These code-driven mining techniques can be utilized as a metadata-generating tool for systems biology to elucidate the biological function of such conformational fragments of MHC I and II molecules, which come in contact with various signal ligands on the surface of T cells and natural killer cells.
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Affiliation(s)
- Hiroshi Izumi
- National Institute of Advanced Industrial Science and Technology (AIST) , AIST Tsukuba West, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
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12
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Taniguchi T, Monde K. Exciton Chirality Method in Vibrational Circular Dichroism. J Am Chem Soc 2012; 134:3695-8. [DOI: 10.1021/ja3001584] [Citation(s) in RCA: 138] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Tohru Taniguchi
- Faculty of Advanced Life Science, Frontier Research
Center for Post-Genome Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
| | - Kenji Monde
- Faculty of Advanced Life Science, Frontier Research
Center for Post-Genome Science and Technology, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
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13
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Mazzanti A, Casarini D. Recent trends in conformational analysis. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2011. [DOI: 10.1002/wcms.96] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Christian N, Aly S, Belyk K. Rhodium-catalyzed enantioselective addition of boronic acids to N-benzylnicotinate salts. J Am Chem Soc 2011; 133:2878-80. [PMID: 21309573 DOI: 10.1021/ja111540g] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The highly enantioselective catalytic asymmetric addition of aryl and alkenylboronic acids to N-benzylnicotinate salt 1 is described. The dihydropyridine 2 reaction products can be converted to synthetically useful piperidines. Application of the methodology to the preparation of enantioenriched quaternary chiral centers is also discussed.
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Affiliation(s)
- Nadeau Christian
- Department of Process Research, Merck Frosst Centre for Therapeutic Research, 16711 Route Trans-Canadienne, Kirkland, Québec, Canada H9H 3L1.
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15
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Yang G, Tran H, Fan E, Shi W, Lowary TL, Xu Y. Determination of the absolute configurations of synthetic daunorubicin analogues using vibrational circular dichroism spectroscopy and density functional theory. Chirality 2010; 22:734-43. [PMID: 20143415 DOI: 10.1002/chir.20825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The absolute configurations of three synthesized anthracycline analogues have been determined using vibrational circular dichroism (VCD) spectroscopy and the density functional theory (DFT) calculations. The experimental VCD spectra of the three compounds have been measured for the first time in the film state, prepared from their CDCl(3) solutions. Conformational searches for the monomers and some dimers of the three compounds have been performed at the DFT level using the B3LYP functional and the 6-311G** and 6-311++G** basis sets. The corresponding vibrational absorption and VCD spectra have been calculated. The good agreement between the experimental and the calculated spectra allows one to assign the absolute configurations of the three compounds with high confidence. In addition, the dominant conformers of the three compounds have also been identified.
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Affiliation(s)
- Guochun Yang
- Department of Chemistry and Alberta Ingenuity Centre for Carbohydrate Science, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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Shimizu A, Mori T, Inoue Y, Yamada S. Combined Experimental and Quantum Chemical Investigation of Chiroptical Properties of Nicotinamide Derivatives with and without Intramolecular Cation−π Interactions. J Phys Chem A 2009; 113:8754-64. [DOI: 10.1021/jp904243w] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Akinori Shimizu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan, and Department of Chemistry, Graduate School of Science, Ochanomizu University, Tokyo 112-8610, Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan, and Department of Chemistry, Graduate School of Science, Ochanomizu University, Tokyo 112-8610, Japan
| | - Yoshihisa Inoue
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan, and Department of Chemistry, Graduate School of Science, Ochanomizu University, Tokyo 112-8610, Japan
| | - Shinji Yamada
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan, and Department of Chemistry, Graduate School of Science, Ochanomizu University, Tokyo 112-8610, Japan
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Izumi H, Ogata A, Nafie LA, Dukor RK. A revised conformational code for the exhaustive analysis of conformers with one-to-one correspondence between conformation and code: application to the VCD analysis of (S)-ibuprofen. J Org Chem 2009; 74:1231-6. [PMID: 19178354 DOI: 10.1021/jo802233s] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A revised conformational code for the exhaustive analysis of conformers of all classes of molecules is proposed and applied to the vibrational circular dichroism (VCD) analysis of (S)-ibuprofen. The revised code can strictly define the conformation of compounds with relatively high-symmetry substituents and is especially useful for visualizing conformational changes in ligands and proteins. The conformational analysis of (S)-ibuprofen using the code in the solution state reveals that the four energetically preferred conformations, ibut-3alpha2alpha sigma(phpa-3alpha sigma2alpha), ibut-3alpha2alpha tau(phpa-3alpha tau2alpha), ibut-2beta3beta tau(phpa-3alpha tau2alpha), and ibut-2beta3beta sigma(phpa-3alpha sigma2alpha), exist in the monomer and dimer forms. In CDCl(3) solution, the dimer form is stabilized as the "U"-shape, and the ease of crystallization is largely ascribed to the conformation of phpa-3alpha2alpha for (S)-ibuprofen. The new version of the conformational code has the possibility to be used as a tool for the exhaustive analysis of conformers of all kinds of chemical compounds, conformome analysis, and in the future for metabolome, proteome, and genome analyses.
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Affiliation(s)
- Hiroshi Izumi
- National Institute of Advanced Industrial Science and Technology, AIST Tsukuba West, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan.
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Sato H, Mori Y, Fukuda Y, Yamagishi A. Syntheses and Vibrational Circular Dichroism Spectra of the Complete Series of [Ru((−)- or (+)-tfac)n(acac)3−n] (n = 0 ∼ 3, tfac = 3-Trifluoroacetylcamphorato and acac = Acetylacetonato). Inorg Chem 2009; 48:4354-61. [DOI: 10.1021/ic801971p] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hisako Sato
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, PRESTO, Japan Science and Technology Agency, Tokyo, Japan, and Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Yukie Mori
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, PRESTO, Japan Science and Technology Agency, Tokyo, Japan, and Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Yutaka Fukuda
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, PRESTO, Japan Science and Technology Agency, Tokyo, Japan, and Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
| | - Akihiko Yamagishi
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, PRESTO, Japan Science and Technology Agency, Tokyo, Japan, and Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1, Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
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Izumi H, Ogata A, Nafie LA, Dukor RK. Structural determination of molecular stereochemistry using VCD spectroscopy and a conformational code: Absolute configuration and solution conformation of a chiral liquid pesticide, (R)-(+)-malathion. Chirality 2009; 21 Suppl 1:E172-80. [DOI: 10.1002/chir.20793] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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