1
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Blackman B, Raju N, Mushti C, Lane K, Patel D, Harris C, Swenson RE. Isolation and Identification of a Urinary Biomarker for Lung Cancer: 27-Nor-5β-Cholestane-3α,7α,12α,24 R,25 S Pentol Glucuronide and Its Deuterated Analog. Molecules 2024; 29:2781. [PMID: 38930845 PMCID: PMC11206657 DOI: 10.3390/molecules29122781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 06/01/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
An untargeted metabolomic study identified four potential lung cancer diagnostic biomarkers in human urine. One of the potential biomarkers was an unidentified feature possessing a m/z value of 561+. "561+" was isolated from human urine and tentatively identified as 27-nor-5β-cholestane-3α,7α,12α,24,25 pentol glucuronide with unknown C24,25 stereochemistry using 1H NMR and mass spectrometry. In a prior report, the C24,25 stereochemistry of the aglycone, 27-nor-5β-cholestane-3α,7α,12α,24,25 pentol, was found to be 24S,25R through GC analysis of the acetonide-TMS derivative. An authentic sample was prepared and found not to have the same stereochemistry as "561+". To identify the C24,25 stereochemistry, four C24,C25 diastereoisomeric alcohols of 27-nor-5β-cholestane-3α,7α,12α,24,25 pentol were prepared from chiral amino acids. Using an LCMS method, the C24,C25 stereochemistry of the "561+" aglycone was determined to be 24R,25S. With the correct aglycone in hand, it was coupled with glucuronic acid to complete the first reported synthesis of 27-nor-5β-cholestane-3α,7α,12α,24R,25S pentol glucuronide. Deuterium labeled 27-nor-5β-cholestane-3α,7α,12α,24R,25S pentol was also synthesized for use as an internal standard for MS quantitation.
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Affiliation(s)
- Burchelle Blackman
- Chemistry and Chemical Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, MD 20850, USA; (N.R.); (C.M.); (K.L.)
| | - Natarajan Raju
- Chemistry and Chemical Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, MD 20850, USA; (N.R.); (C.M.); (K.L.)
| | - Chandrasekhar Mushti
- Chemistry and Chemical Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, MD 20850, USA; (N.R.); (C.M.); (K.L.)
| | - Kelly Lane
- Chemistry and Chemical Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, MD 20850, USA; (N.R.); (C.M.); (K.L.)
- AstraZeneca, 1 MedImmune Way, Gaithersburg, MD 20878, USA
| | - Daxeshkumar Patel
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (D.P.)
| | - Curtis Harris
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; (D.P.)
| | - Rolf E. Swenson
- Chemistry and Chemical Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, MD 20850, USA; (N.R.); (C.M.); (K.L.)
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2
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Luxenburger A, Harris LD, Ure EM, Jiao W, Woolhouse AD, Cameron SA, Weymouth-Wilson A, Furneaux RH, Pitman JL, Hinkley SFR. The discovery of 12β-methyl-17-epi-18-nor-bile acids as potent and selective TGR5 agonists. Eur J Med Chem 2023; 250:115143. [PMID: 36841086 DOI: 10.1016/j.ejmech.2023.115143] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023]
Abstract
Recent discoveries have demonstrated that the physiological function of bile acids extends to the regulation of diverse signaling processes through interactions with nuclear and G protein-coupled receptors, most notably the Farnesoid-X nuclear receptor (FXR) and the G protein-coupled bile acid receptor 1 (GPBAR1, also known as TGR5). Targeting such signaling pathways pharmacologically, i.e. with bile acid-derived therapeutics, presents great potential for the treatment of various metabolic, inflammatory immune, liver, and neurodegenerative diseases. Here we report the discovery of two potent and selective TGR5 agonists (NZP196 and 917). These compounds are the taurine conjugates of 6α-ethyl-substituted 12β-methyl-18-nor-bile acids with the side chain being located on the α-face of the steroid scaffold. The compounds emerged from a screening effort of a diverse library of 12β-methyl-18-nor-bile acids that were synthesized from 12β-methyl-18-nor-chenodeoxycholic acid and its C17-epimer. Upon testing for FXR activity, both compounds were found to be inactive, thus revealing selectivity for TGR5.
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Affiliation(s)
- Andreas Luxenburger
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt, 5040, New Zealand.
| | - Lawrence D Harris
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt, 5040, New Zealand
| | - Elizabeth M Ure
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt, 5040, New Zealand
| | - Wanting Jiao
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt, 5040, New Zealand
| | - Anthony D Woolhouse
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt, 5040, New Zealand
| | - Scott A Cameron
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt, 5040, New Zealand
| | | | - Richard H Furneaux
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt, 5040, New Zealand
| | - Janet L Pitman
- School of Biological Sciences, Victoria University of Wellington, Kelburn Parade, Wellington, 6012, New Zealand
| | - Simon F R Hinkley
- Ferrier Research Institute, Victoria University of Wellington, 69 Gracefield Rd, Lower Hutt, 5040, New Zealand
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3
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Thakur K, Shlain MA, Marianski M, Braunschweig AB. Regiochemical Effects on the Carbohydrate Binding and Selectivity of Flexible Synthetic Carbohydrate Receptors with Indole and Quinoline Heterocyclic Groups. European J Org Chem 2021; 2021:5262-5274. [PMID: 35694139 PMCID: PMC9186342 DOI: 10.1002/ejoc.202100763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 08/07/2023]
Abstract
Synthetic carbohydrate receptors (SCRs) that bind cell-surface carbohydrates could be used for disease detection, drug-delivery, and therapeutics, or for the site-selective modification of complex carbohydrates but their potential has not been realized because of remaining challenges associated with binding affinity and substrate selectivity. We have reported recently a series of flexible SCRs based upon a biaryl core with four pendant heterocyclic groups that bind glycans selectively through noncovalent interactions. Here we continue to explore the role of heterocycles on substrate selectivity by expanding our library to include a series of indole and quinoline heterocycles that vary in their regiochemistry of attachment to the biaryl core. The binding of these SCRs to a series of biologically-relevant carbohydrates was studied by 1H NMR titrations in CD2Cl2 and density-functional theory calculations. We find SCR030, SCR034 and SCR037 are selective, SCR031, SCR032, and SCR039 are strong binders, and SCR033, SCR035, SCR036, and SCR038 are promiscuous and bind weakly. Computational analysis reveals the importance of C-H⋯π and H-bonding interactions in defining the binding properties of these new receptors. By combining these data with those obtained from our previous studies on this class of flexible SCRs, we develop a series of design rules that account for the binding of all SCRs of this class and anticipate the binding of future, not-yet imagined tetrapodal SCRs.
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Affiliation(s)
- Khushabu Thakur
- Nanoscience Initiative, Advanced Science Research Center at The Graduate Center of the City University of New York 85 St Nicholas Terrace, New York, NY 10031 (USA)
- Department of Chemistry and Biochemistry, Hunter College 695 Park Ave, New York, NY 10065 (USA)
| | - Milan A Shlain
- Nanoscience Initiative, Advanced Science Research Center at The Graduate Center of the City University of New York 85 St Nicholas Terrace, New York, NY 10031 (USA)
- Department of Chemistry and Biochemistry, Hunter College 695 Park Ave, New York, NY 10065 (USA)
| | - Mateusz Marianski
- Nanoscience Initiative, Advanced Science Research Center at The Graduate Center of the City University of New York 85 St Nicholas Terrace, New York, NY 10031 (USA)
- Department of Chemistry and Biochemistry, Hunter College 695 Park Ave, New York, NY 10065 (USA)
- The PhD Program in Chemistry, The Graduate Center of the City University of New York, 365 5 Ave, New York, NY 10016 (USA)
- The PhD Program in Biochemistry, The Graduate Center of the City University of New York, 365 5 Ave, New York, NY 10016 (USA)
| | - Adam B Braunschweig
- Nanoscience Initiative, Advanced Science Research Center at The Graduate Center of the City University of New York 85 St Nicholas Terrace, New York, NY 10031 (USA)
- Department of Chemistry and Biochemistry, Hunter College 695 Park Ave, New York, NY 10065 (USA)
- The PhD Program in Chemistry, The Graduate Center of the City University of New York, 365 5 Ave, New York, NY 10016 (USA)
- The PhD Program in Biochemistry, The Graduate Center of the City University of New York, 365 5 Ave, New York, NY 10016 (USA)
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4
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Luxenburger A, Harris LD, Ure EM, Landaeta Aponte RA, Woolhouse AD, Cameron SA, Ling CD, Piltz RO, Lewis AR, Gainsford GJ, Weymouth-Wilson A, Furneaux RH. Synthesis of 12β-Methyl-18- nor-bile Acids. ACS OMEGA 2021; 6:25019-25039. [PMID: 34604682 PMCID: PMC8482778 DOI: 10.1021/acsomega.1c04199] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Indexed: 06/13/2023]
Abstract
Decoupling the roles of the farnesoid X nuclear receptor and Takeda G-protein-coupled bile acid receptor 5 is essential for the development of novel bile acid therapeutics targeting metabolic and neurodegenerative diseases. Herein, we describe the synthesis of 12β-methyl-18-nor-bile acids which may serve as probes in the search for new bile acid analogues with clinical applicability. A Nametkin-type rearrangement was applied to protected cholic acid derivatives, giving rise to tetra-substituted Δ13,14- and Δ13,17-unsaturated 12β-methyl-18-nor-bile acid intermediates (24a and 25a). Subsequent catalytic hydrogenation and deprotection yielded 12β-methyl-18-nor-chenodeoxycholic acid (27a) and its 17-epi-epimer (28a) as the two major reaction products. Optimization of the synthetic sequence enabled a chromatography-free route to prepare these bile acids at a multi-gram scale. In addition, the first cis-C-D ring-junctured bile acid and a new 14(13 → 12)-abeo-bile acid are described. Furthermore, deuteration experiments were performed to provide mechanistic insights into the formation of the formal anti-hydrogenation product 12β-methyl-18-nor-chenodeoxycholic acid (27a).
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Affiliation(s)
- Andreas Luxenburger
- Ferrier
Research Institute, Victoria University
of Wellington, 69 Gracefield
Rd, Lower Hutt 5040, New Zealand
| | - Lawrence D. Harris
- Ferrier
Research Institute, Victoria University
of Wellington, 69 Gracefield
Rd, Lower Hutt 5040, New Zealand
| | - Elizabeth M. Ure
- Ferrier
Research Institute, Victoria University
of Wellington, 69 Gracefield
Rd, Lower Hutt 5040, New Zealand
| | - Roselis A. Landaeta Aponte
- Ferrier
Research Institute, Victoria University
of Wellington, 69 Gracefield
Rd, Lower Hutt 5040, New Zealand
| | - Anthony D. Woolhouse
- Ferrier
Research Institute, Victoria University
of Wellington, 69 Gracefield
Rd, Lower Hutt 5040, New Zealand
| | - Scott A. Cameron
- Ferrier
Research Institute, Victoria University
of Wellington, 69 Gracefield
Rd, Lower Hutt 5040, New Zealand
| | - Chris D. Ling
- School
of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Ross O. Piltz
- Australian
Centre for Neutron Scattering, New Illawarra Rd, Lucas Heights, Sydney, New South Wales 2234, Australia
| | - Andrew R. Lewis
- Callaghan
Innovation, P.O. Box 31 310, Lower
Hutt 5040, New Zealand
| | - Graeme J. Gainsford
- Ferrier
Research Institute, Victoria University
of Wellington, 69 Gracefield
Rd, Lower Hutt 5040, New Zealand
| | - Alex Weymouth-Wilson
- New
Zealand Pharmaceuticals Ltd, 68 Weld Street, RD2, Palmerston North 4472, New Zealand
| | - Richard H. Furneaux
- Ferrier
Research Institute, Victoria University
of Wellington, 69 Gracefield
Rd, Lower Hutt 5040, New Zealand
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5
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Bravo MF, Lema MA, Marianski M, Braunschweig AB. Flexible Synthetic Carbohydrate Receptors as Inhibitors of Viral Attachment. Biochemistry 2020; 60:999-1018. [PMID: 33094998 DOI: 10.1021/acs.biochem.0c00732] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Carbohydrate-receptor interactions are often involved in the docking of viruses to host cells, and this docking is a necessary step in the virus life cycle that precedes infection and, ultimately, replication. Despite the conserved structures of the glycans involved in docking, they are still considered "undruggable", meaning these glycans are beyond the scope of conventional pharmacological strategies. Recent advances in the development of synthetic carbohydrate receptors (SCRs), small molecules that bind carbohydrates, could bring carbohydrate-receptor interactions within the purview of druggable targets. Here we discuss the role of carbohydrate-receptor interactions in viral infection, the evolution of SCRs, and recent results demonstrating their ability to prevent viral infections in vitro. Common SCR design strategies based on boronic ester formation, metal chelation, and noncovalent interactions are discussed. The benefits of incorporating the idiosyncrasies of natural glycan-binding proteins-including flexibility, cooperativity, and multivalency-into SCR design to achieve nonglucosidic specificity are shown. These studies into SCR design and binding could lead to new strategies for mitigating the grave threat to human health posed by enveloped viruses, which are heavily glycosylated viroids that are the cause of some of the most pressing and untreatable diseases, including HIV, Dengue, Zika, influenza, and SARS-CoV-2.
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Affiliation(s)
- M Fernando Bravo
- Advanced Science Research Center at the Graduate Center of the City University of New York, New York, New York 10031, United States.,Department of Chemistry and Biochemistry, Hunter College, New York, New York 10065, United States.,The PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Manuel A Lema
- Advanced Science Research Center at the Graduate Center of the City University of New York, New York, New York 10031, United States.,Department of Chemistry and Biochemistry, City College of New York, New York, New York 10031, United States
| | - Mateusz Marianski
- Department of Chemistry and Biochemistry, Hunter College, New York, New York 10065, United States.,The PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States.,The PhD Program in Biochemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Adam B Braunschweig
- Advanced Science Research Center at the Graduate Center of the City University of New York, New York, New York 10031, United States.,Department of Chemistry and Biochemistry, Hunter College, New York, New York 10065, United States.,The PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States.,The PhD Program in Biochemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
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6
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Bravo MF, Palanichamy K, Shlain MA, Schiro F, Naeem Y, Marianski M, Braunschweig AB. Synthesis and Binding of Mannose‐Specific Synthetic Carbohydrate Receptors. Chemistry 2020; 26:11782-11795. [DOI: 10.1002/chem.202000481] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/15/2020] [Indexed: 12/16/2022]
Affiliation(s)
- M. Fernando Bravo
- Advanced Science Research Center at the Graduate Center City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
- The PhD Program in Chemistry The Graduate Center of the, City University of New York 365 5th Ave New York NY 10016 USA
| | - Kalanidhi Palanichamy
- Advanced Science Research Center at the Graduate Center City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
| | - Milan A. Shlain
- Advanced Science Research Center at the Graduate Center City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
| | - Frank Schiro
- Advanced Science Research Center at the Graduate Center City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
| | - Yasir Naeem
- Advanced Science Research Center at the Graduate Center City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
| | - Mateusz Marianski
- Advanced Science Research Center at the Graduate Center City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
- The PhD Program in Chemistry The Graduate Center of the, City University of New York 365 5th Ave New York NY 10016 USA
- The PhD Program in Biochemistry The Graduate Center of the, City University of New York 365 5th Ave New York NY 10016 USA
| | - Adam B. Braunschweig
- Advanced Science Research Center at the Graduate Center City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
- The PhD Program in Chemistry The Graduate Center of the, City University of New York 365 5th Ave New York NY 10016 USA
- The PhD Program in Biochemistry The Graduate Center of the, City University of New York 365 5th Ave New York NY 10016 USA
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7
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Palanichamy K, Bravo MF, Shlain MA, Schiro F, Naeem Y, Marianski M, Braunschweig AB. Binding Studies on a Library of Induced‐Fit Synthetic Carbohydrate Receptors with Mannoside Selectivity. Chemistry 2018; 24:13971-13982. [DOI: 10.1002/chem.201803317] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Kalanidhi Palanichamy
- Nanoscience Initiative Advanced Science Research Center at, The Graduate Center of the City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
| | - M. Fernando Bravo
- Nanoscience Initiative Advanced Science Research Center at, The Graduate Center of the City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
- The Ph.D. Program in Chemistry The Graduate Center of the City University of New York 365 5th Ave New York NY 10016 USA
| | - Milan A. Shlain
- Nanoscience Initiative Advanced Science Research Center at, The Graduate Center of the City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
| | - Frank Schiro
- Nanoscience Initiative Advanced Science Research Center at, The Graduate Center of the City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
| | - Yasir Naeem
- Nanoscience Initiative Advanced Science Research Center at, The Graduate Center of the City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
| | - Mateusz Marianski
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
- The Ph.D. Program in Chemistry The Graduate Center of the City University of New York 365 5th Ave New York NY 10016 USA
| | - Adam B. Braunschweig
- Nanoscience Initiative Advanced Science Research Center at, The Graduate Center of the City University of New York 85 St Nicholas Terrace New York NY 10031 USA
- Department of Chemistry and Biochemistry Hunter College 695 Park Ave New York NY 10065 USA
- The Ph.D. Program in Chemistry The Graduate Center of the City University of New York 365 5th Ave New York NY 10016 USA
- The Ph.D. Program in Biochemistry The Graduate Center of the City University of New York 365 5th Ave New York NY 10016 USA
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8
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Jurček O, Bonakdarzadeh P, Kalenius E, Linnanto JM, Groessl M, Knochenmuss R, Ihalainen JA, Rissanen K. Superchiral Pd
3
L
6
Coordination Complex and Its Reversible Structural Conversion into Pd
3
L
3
Cl
6
Metallocycles. Angew Chem Int Ed Engl 2015; 54:15462-7. [DOI: 10.1002/anie.201506539] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/12/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Ondřej Jurček
- University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box 35, 40014 University of Jyvaskyla (Finland)
| | - Pia Bonakdarzadeh
- University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box 35, 40014 University of Jyvaskyla (Finland)
| | - Elina Kalenius
- University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box 35, 40014 University of Jyvaskyla (Finland)
| | - Juha Matti Linnanto
- University of Tartu, Institute of Physics, Ravila 14c, 50411 Tartu (Estonia)
| | | | | | - Janne A. Ihalainen
- University of Jyvaskyla, Nanoscience Center, Department of Biological and Environmental Science, P.O. Box 35, 40014 University of Jyvaskyla (Finland)
| | - Kari Rissanen
- University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box 35, 40014 University of Jyvaskyla (Finland)
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9
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Jurček O, Bonakdarzadeh P, Kalenius E, Linnanto JM, Groessl M, Knochenmuss R, Ihalainen JA, Rissanen K. Superchiral Pd3L6Coordination Complex and Its Reversible Structural Conversion into Pd3L3Cl6Metallocycles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506539] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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10
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Mayorquín-Torres MC, Flores-Álamo M, Iglesias-Arteaga MA. Application of palladium-catalyzed carboxyl anhydride-boronic acid cross coupling in the synthesis of novel bile acids analogs with modified side chains. Steroids 2015; 101:21-7. [PMID: 26048448 DOI: 10.1016/j.steroids.2015.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 05/21/2015] [Accepted: 05/25/2015] [Indexed: 11/18/2022]
Abstract
Palladium-catalyzed cross coupling of 4-methoxycarbonyl phenyboronic acid with acetylated bile acids in which the carboxyl functions was activated by formation of a mixed anhydride with pivalic anhydride afforded the cross coupled compounds, which were converted in novel side chain modified bile acids by one pot carbonyl reduction/removal of the protecting acetyl groups by Wolff-Kishner reduction. Unambiguous assignments of the NMR signals and crystal characterization of the heretofore unknown compounds are provided.
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Affiliation(s)
- Martha C Mayorquín-Torres
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico
| | - Marcos Flores-Álamo
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico
| | - Martin A Iglesias-Arteaga
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico.
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11
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Miron CE, Petitjean A. Sugar recognition: designing artificial receptors for applications in biological diagnostics and imaging. Chembiochem 2015; 16:365-79. [PMID: 25619151 DOI: 10.1002/cbic.201402549] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Indexed: 01/23/2023]
Abstract
At the cellular level, numerous processes ranging from protein folding to disease development are mediated by a sugar-based molecular information system that is much less well known than its DNA- or protein-based counterparts. The subtle structural diversity of such sugar tags nevertheless offers an excellent, if challenging, opportunity to design receptors for the selective recognition of biorelevant sugars. Over the past 40 years, growing interest in the field of sugar recognition has led to the development of several promising artificial receptors, which could soon find widespread use in medical diagnostics and cell imaging.
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Affiliation(s)
- Caitlin E Miron
- Department of Chemistry, Queen's University, Chernoff Hall, 90 Bader Lane, Kingston ON K7L 3N6 (Canada)
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12
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Lukashev NV, Kazantsev AV, Beletskaya IP. Hydro- and silylcyanation of cholic acid derivatives. Synthesis of novel pincer ligands based on litocholic acid. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2014. [DOI: 10.1134/s1070428014100017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Meijide F, Trillo JV, de Frutos S, Galantini L, Pavel NV, Soto VH, Jover A, Tato JV. Crystal structure of head-to-head dimers of cholic and deoxycholic acid derivatives with different symmetric bridges. Steroids 2013. [PMID: 23200733 DOI: 10.1016/j.steroids.2012.11.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The crystal structure of three head-to-head dimers (having two cholic acid or deoxycholic acid units) linked at carbon atoms C3 by aromatic or alkyl bridges is studied. An internal coordinates system is necessary for describing the relative orientation in the space of the two bile acid residues. Five angles (three torsion and two common ones) are necessary for defining the relative position of both steroid residues in space. Carbon atoms C3 (which always carries a α-hydroxy group in natural bile acids), and C10 and C13 (which always carry β-methyl groups) of each steroid residue are suitable for this purpose. Furthermore, the distance between each C3 carbon atoms of both steroid residues will allow one to locate the steroids in space. The three dimers selected provide a large range of values for these angles. The packing, hydrogen bond network, and location of guest in the three crystals are discussed.
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Affiliation(s)
- Francisco Meijide
- Departamento de Química Física, Facultad de Ciencias, Universidad de Santiago de Compostela, Avda. Alfonso X El Sabio s/n, 27002 Lugo, Spain
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Soto VH, Alvarez M, Meijide F, Trillo JV, Antelo A, Jover A, Galantini L, Tato JV. Ice-like encapsulated water by two cholic acid moieties. Steroids 2012; 77:1228-32. [PMID: 22824290 DOI: 10.1016/j.steroids.2012.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 05/24/2012] [Accepted: 07/03/2012] [Indexed: 11/18/2022]
Abstract
Starting from the structure of ice (in which each water molecule is surrounded by other four water molecules forming a tetrahedron with a value of 4.51Å for the edge O-O distance), and the knowledge that this value also corresponds to the O7-O12 distance of the skeleton of cholic acid, it is hypothesized that two steroid cholic acid moieties, with an appropriate steroid-steroid distance and a belly-to-belly orientation, could encapsulate a single water molecule between them. To check this hypothesis two succinyl derivatives of cholic acid (a monomer and the related head-head dimer in which the succinyl group is the linking bridge) were designed. The expected "ice-like" structure is found in the crystal of the dimer. There is a hydrogen bond synergy between those participating in the "ice-like" structure, and those in which the bridge is involved with the O7-H hydroxy group and the side chain of the steroid.
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Affiliation(s)
- Victor H Soto
- Department of Chemistry, University of Costa Rica, San José, Costa Rica
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15
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Gautrot JE, Zhu XX. Biodegradable polymers based on bile acids and potential biomedical applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012. [DOI: 10.1163/156856206778530713] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Chhatra RK, Kumar A, Pandey PS. Synthesis of a bile acid-based click-macrocycle and its application in selective recognition of chloride ion. J Org Chem 2011; 76:9086-9. [PMID: 21962257 DOI: 10.1021/jo201161n] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A novel method for the synthesis of a bile acid-based macrocycle has been developed using click chemistry. The 1,2,3-triazolium derivative of the macrocycle shows remarkable selectivity in binding of chloride ion.
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Affiliation(s)
- Rajesh K Chhatra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
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Bai X, Barnes C, Pascal RA, Chen X, Dias JR. Bile Acid-Based Cage Compounds with Lipophilic Outer Shells and Inner Cavities. Org Lett 2011; 13:3064-7. [DOI: 10.1021/ol200953h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xinyan Bai
- Department of Chemistry, University of Missouri—Kansas City, 5100 Rockhill Road, Kansas City, Missouri 64110, United States, Department of Chemistry, University of Missouri—Columbia, 601 South College Avenue, Columbia, Missouri 65211, United States, and Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Charles Barnes
- Department of Chemistry, University of Missouri—Kansas City, 5100 Rockhill Road, Kansas City, Missouri 64110, United States, Department of Chemistry, University of Missouri—Columbia, 601 South College Avenue, Columbia, Missouri 65211, United States, and Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Robert A. Pascal
- Department of Chemistry, University of Missouri—Kansas City, 5100 Rockhill Road, Kansas City, Missouri 64110, United States, Department of Chemistry, University of Missouri—Columbia, 601 South College Avenue, Columbia, Missouri 65211, United States, and Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Xueyi Chen
- Department of Chemistry, University of Missouri—Kansas City, 5100 Rockhill Road, Kansas City, Missouri 64110, United States, Department of Chemistry, University of Missouri—Columbia, 601 South College Avenue, Columbia, Missouri 65211, United States, and Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Jerry Ray Dias
- Department of Chemistry, University of Missouri—Kansas City, 5100 Rockhill Road, Kansas City, Missouri 64110, United States, Department of Chemistry, University of Missouri—Columbia, 601 South College Avenue, Columbia, Missouri 65211, United States, and Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
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18
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Maslov MA, Morozova NG, Solomatina TV, Sergeeva OA, Cheshkov DA, Serebrennikova GA. Synthesis of cholic acid amino analogues by oxime reduction with TiCl3–NaBH3CN. MENDELEEV COMMUNICATIONS 2011. [DOI: 10.1016/j.mencom.2011.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Hashizume M, Tobey S, Lynch VM, Anslyn EV. Synthesis and Evaluation of a Cyclophane Receptor for Acetic Acid. Supramol Chem 2010. [DOI: 10.1080/1061027021000052698] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mineo Hashizume
- a Department of Chemistry and Biochemistry , The University of Texas , at Austin, Austin, TX, 78712, USA
| | - Suzanne Tobey
- a Department of Chemistry and Biochemistry , The University of Texas , at Austin, Austin, TX, 78712, USA
| | - Vincent M. Lynch
- a Department of Chemistry and Biochemistry , The University of Texas , at Austin, Austin, TX, 78712, USA
| | - Eric V. Anslyn
- a Department of Chemistry and Biochemistry , The University of Texas , at Austin, Austin, TX, 78712, USA
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20
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Alvarez Alcalde M, Jover A, Meijide F, Galantini L, Viorel Pavel N, Antelo A, Vázquez Tato J. Aggregation behavior of tetracarboxylic surfactants derived from cholic and deoxycholic acids and ethylenediaminetetraacetic acid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:9037-9044. [PMID: 19719219 DOI: 10.1021/la9007813] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The reaction of 3beta-aminoderivatives of cholic and deoxycholic acids (steroid residues) with dimethyl ester of ethylenediaminetetraacetic acid (bridge) leads to the formation of dimers carrying four carboxylic organic functions, two of them located on the side chain of each steroid residue and the other two on the bridge. As tetrasodium salts, these new compounds behave as surfactants and have been characterized by surface tension, fluorescence intensity of pyrene (as a probe), and static and dynamic light scattering measurements. Thermodynamic parameters for micellization were obtained from the dependence of the critical micelle concentration (cmc) with temperature. For both surfactants, the fraction of bound counterions is close to 0.5. The aggregation behavior is similar to one of their bile salt residues [i.e., sodium cholate (NaC) and sodium deoxycholate (NaDC)] and can be summarized as follows: (i) molecular areas at the interface for the new surfactants are fairly close to twice the value for a single molecule in a monolayer of natural bile salts; (ii) the environment where pyrene is solubilized is very apolar, as in natural bile salt aggregates; (iii) Gibbs free energies (per steroid residue) for micellization are not far from published values for NaC and NaDC, and the differences can be understood on the basis of less hydrophobicity of the new surfactants due to the charges in the bridge; and (iv) as for NaC and NaDC, aggregates have rather low aggregation numbers (which depend on the amount of added inert salt, NaCl). A structure based on the disklike model accepted for small bile salt aggregates is proposed.
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Affiliation(s)
- Mercedes Alvarez Alcalde
- Departamento de Química Física, Facultad de Ciencias, Universidad de Santiago de Compostela, Avda. Alfonso X El Sabio s/n, 27002 Lugo, Spain
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21
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Averin AD, Uglov AN, Ranyuk ER, Lukashev NV, Beletskaya IP. Palladium-catalyzed amination in the synthesis of nitrogen and oxygen heterocycles containing fragments of cholane and quinoline. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2009. [DOI: 10.1134/s1070428009020213] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Averin AD, Ranyuk ER, Lukashev NV, Buryak AK, Beletskaya IP. Synthesis of nitrogen- and oxygen-containing macrocycles by palladium-catalyzed amination of 3,24-bis(6-chloropyridin-2-yloxy)cholane. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2009. [DOI: 10.1134/s1070428009010114] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Gautrot JE, Zhu XX. Macrocyclic bile acids: from molecular recognition to degradable biomaterial building blocks. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b821340b] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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24
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Averin AD, Ranyuk ER, Lukashev NV, Golub SL, Buryak AK, Beletskaya IP. Palladium-catalyzed amination in the synthesis of macrocycles comprising cholane, polyamine and pyridine units. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.12.049] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Rohacova J, Marin ML, Martínez-Romero A, O'Connor JE, Gomez-Lechon MJ, Donato MT, Castell JV, Miranda MA. Photophysical characterization and flow cytometry applications of cholylamidofluorescein, a fluorescent bile acid scaffold. Photochem Photobiol Sci 2008; 7:860-6. [DOI: 10.1039/b806366d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Valkonen A, Sievänen E, Ikonen S, Lukashev NV, Donez PA, Averin AD, Lahtinen M, Kolehmainen E. Novel lithocholaphanes: Syntheses, NMR, MS, and molecular modeling studies. J Mol Struct 2007. [DOI: 10.1016/j.molstruc.2007.01.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Bile acid scaffolds in supramolecular chemistry: the interplay of design and synthesis. Molecules 2007; 12:2106-22. [PMID: 17962729 DOI: 10.3390/12082106] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2007] [Accepted: 08/08/2007] [Indexed: 11/17/2022] Open
Abstract
Since early work in the 1980s, the bile acids have become well established as building blocks for supramolecular chemistry. The author's laboratory has specialised in converting cholic acid, the archetypal bile acid, into macrocyclic and acyclic receptors for anions and carbohydrates. This review highlights the synthetic aspects of this work, especially the use of modern synthetic methodology to perform less obvious structural transformations.
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Gautrot JE, Zhu XX. Molar mass of main-chain bile acid-based oligo-esters measured by SEC, MALDI-TOF spectrometry and NMR spectroscopy: A comparative study. Anal Chim Acta 2007; 581:281-6. [PMID: 17386454 DOI: 10.1016/j.aca.2006.08.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2006] [Revised: 08/09/2006] [Accepted: 08/10/2006] [Indexed: 10/24/2022]
Abstract
Bile acid-based polymers are promising new materials for biomedical applications. The determination of their molar mass, as for other novel polymers, has been difficult, due to the lack of suitable standards for size exclusion chromatography (SEC). In order to solve this problem, a family of main-chain bile acid-based oligo-esters has been synthesized by acyclic diene metathesis to be used as analogues in such analysis. These oligomers have been characterized by SEC, MALDI-TOF mass spectrometry and NMR spectroscopy. The results show that SEC with polystyrene standards tends to overestimate the molar mass of these materials and that a correction factor between 0.50 and 0.60 should be used for more accuracy.
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Affiliation(s)
- Julien E Gautrot
- Département de chimie, Université de Montréal, C.P. 6128, succursale Centre-ville, Montréal, Québec H3C 3J7, Canada
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31
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Averin AD, Ranyuk ER, Lukashev NV, Beletskaya IP. Synthesis of nitrogen- and oxygen-containing macrocycles--derivatives of lithocholic Acid. Chemistry 2006; 11:7030-9. [PMID: 16187369 DOI: 10.1002/chem.200500784] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Palladium-catalyzed amination of 3,24-bis(3-bromophenoxy)cholane (4) with various polyamines and polyoxadiamines 5 taken in 1:1 ratio was used for the synthesis of the macrocycles 6, which contain steroidal and polyamine moieties and were obtained in 38-65 % yields. The same reaction with excess polyamine (2.2-3 equiv) provided bis(polyamino) derivatives of 3,24-diphenoxycholane 7 in excellent yields, whereas the diarylation of polyamines with two equivalents of 3,24-bis(3-bromophenoxy)cholane afforded their bis(steroidal) derivatives 8. Compounds 7 and 8 were employed in the syntheses of cyclodimers 9, which possess two steroidal and two polyamine fragments; the efficiency of two methods was compared.
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Affiliation(s)
- Alexei D Averin
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, Moscow, Russia
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32
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Krapcho AP. USES OF SODIUM CHLORITE AND SODIUM BROMATE IN ORGANIC SYNTHESIS. A REVIEW. ORG PREP PROCED INT 2006. [DOI: 10.1080/00304940609355988] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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33
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Hassoune H, Rhlalou T, Métayer M, Verchère JF. Facilitated transport of aldoses by methyl cholate through supported liquid membranes impregnated with various solvents. J Memb Sci 2005. [DOI: 10.1016/j.memsci.2004.08.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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34
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Virtanen E, Kolehmainen E. Use of Bile Acids in Pharmacological and Supramolecular Applications. European J Org Chem 2004. [DOI: 10.1002/ejoc.200300699] [Citation(s) in RCA: 174] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Elina Virtanen
- Department of Chemistry, University of Jyväskylä, P. O. Box 35, 40014 University of Jyväskylä, Finland, Fax: (internat.) +358‐14‐260‐2501
| | - Erkki Kolehmainen
- Department of Chemistry, University of Jyväskylä, P. O. Box 35, 40014 University of Jyväskylä, Finland, Fax: (internat.) +358‐14‐260‐2501
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35
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Tarver JE, Joullié MM. Synthesis of γ,δ-Unsaturated and δ,ε-Unsaturated α-Amino Acids from Fragmentation of γ- and δ-Lactones. J Org Chem 2004; 69:815-20. [PMID: 14750809 DOI: 10.1021/jo035401m] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A noncoded amino acid of cyclomarin A (1) was synthesized in a racemic fashion. The method employs a six-membered ring template to control the relative stereochemistry and introduction of the functional groups. Ultimately, Pd-catalyzed fragmentation of the lactone provided gamma,delta-unsaturated and delta,epsilon-unsaturated alpha-amino acids. A Pd-catalyzed ring opening of a gamma-lactone is also reported.
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Affiliation(s)
- James E Tarver
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA
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36
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Bülbül M, Saraçoğlu N, Küfrevioğlu OI, Ciftçi M. Bile acid derivatives of 5-amino-1,3,4-thiadiazole-2-sulfonamide as new carbonic anhydrase inhibitors: synthesis and investigation of inhibition effects. Bioorg Med Chem 2002; 10:2561-7. [PMID: 12057645 DOI: 10.1016/s0968-0896(02)00104-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Bile acid amides (cholan-24-amides) of 5-substituted 1,3,4-thiadiazole-2-sulfonamide have been prepared from lithocholic, deoxycholic, cholic and dehydrocholic acids. Besides, the alcohol functional groups on the cholane ring systems were protected with acetyl group. Amides of the protected cholanes of lithocholic and cholic acids were also synthesized. Later, inhibition effects of these compounds on human carbonic anhydrase isozymes (HCA-I and II) have been investigated in vitro. For the most active compounds, inhibition constants ranged from 66 to 190nM for HCA-II with I(50) (molarity of inhibitor producing a 50% inhibition of CA activity). In addition, in vivo studies were performed for the synthesized compounds in Sprague-Dawley rats. The compounds (11 and 18) showed especially significant inhibition efficacy (p<0.001).
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Affiliation(s)
- Metin Bülbül
- Faculty of Science and Arts, Department of Chemistry, Atatürk University, 25240 Erzurum, Turkey
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37
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Dias JR, Pascal RA, Morrill J, Holder AJ, Gao H, Barnes C. Remarkable structures of cyclotri(deoxycholate) and cyclotetra(24-norcholate) acetate esters. J Am Chem Soc 2002; 124:4647-52. [PMID: 11971713 DOI: 10.1021/ja011797c] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
X-ray crystallographic determinations and AM1 calculations have defined the solid-state and gas-phase structures of cyclotri(deoxycholate) and cyclotetra(24-norcholate). The latter cyclotetramer is one of the largest open macrocycles ever subjected to crystallography.
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Affiliation(s)
- Jerry Ray Dias
- Department of Chemistry, University of Missouri-Kansas City, Kansas City, Missouri 64110-2499, USA
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38
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Ryan TJ, Lecollinet G, Velasco T, Davis AP. Phase transfer of monosaccharides through noncovalent interactions: selective extraction of glucose by a lipophilic cage receptor. Proc Natl Acad Sci U S A 2002; 99:4863-6. [PMID: 11929965 PMCID: PMC122684 DOI: 10.1073/pnas.062013499] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2002] [Indexed: 11/18/2022] Open
Abstract
We have previously shown that macrotricyclic host 1a is a powerful receptor for glucopyranosyl units in the nonpolar medium of chloroform. However, the solubility properties of 1a did not permit studies of the extraction of carbohydrates from aqueous solution. This paper describes the synthesis of the new variant 1b, furnished with a highly lipophilic exterior array of 12 benzyloxy substituents. In homogeneous solution, 1b behaves much as 1a, binding n-octyl beta-d-glucoside with K(a) = 720 M(-1) in CD(3)OH/CDCl(3) (8:92). In two-phase experiments, the improved solubility of 1b allows carbohydrate extraction to be observed. Three hexoses (glucose, galactose, and mannose), two pentoses (ribose and xylose), and the two methyl glucosides are all extracted substantially into chloroform from 1 M aqueous solutions. Among the hexoses, 1b shows notable affinity and selectivity for glucose, extracting detectable amounts even from 0.1 M aqueous solutions.
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Affiliation(s)
- Theo J Ryan
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
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Abstract
The preparation of receptors for saccharide recognition in a natural environment has been an unmet goal for a long time. We present herein the synthesis and binding properties of (R,S)-1,1'-binaphthyl-substituted macrocycles as receptors for saccharide recognition in water/acetonitrile (1:1) and in DMSO. Porphyrin and metalloporphyrin macrocycles with two to four 1,1'-binaphthyl substituents and multiple hydroxy groups generate a binding site for saccharides that incorporates hydrogen-bonding hydroxy groups together with the aromatic hydrophobic pocket. The specificity for di- and trisaccharides is governed by the cavity size. The mechanism of binding has been studied by 1H NMR spectroscopy and the role of H-bonding and CH-pi interactions has been evaluated; the ability to bind saccharides has been demonstrated by the surface plasmon resonance (SPR) technique. The application of these macrocyclic receptors to sensor development is also presented.
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Affiliation(s)
- Oleksandr Rusin
- Institute of Chemical Technology, Department of Analytical Chemistry, Prague, Czech Republic
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Dias JR, Gao H, Kolehmainen E. 13C nuclear magnetic resonance data of bile acid derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2000; 56A:53-77. [PMID: 10728856 DOI: 10.1016/s1386-1425(99)00135-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The 13C-NMR spectra of well over 100 bile acid derivatives have been analyzed and summarized. A diagnostic gamma-oxygen shielding effect has been identified.
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Affiliation(s)
- J R Dias
- Department of Chemistry, University of Missouri-Kansas City, 64100-2499, USA.
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Davis AP, Wareham RS. Kohlenhydraterkennung durch nichtkovalente Wechselwirkungen: eine Herausforderung für die biomimetische und die supramolekulare Chemie. Angew Chem Int Ed Engl 1999. [DOI: 10.1002/(sici)1521-3757(19991018)111:20<3160::aid-ange3160>3.0.co;2-z] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Gao H, Dias JR. SELECTIVE PROTECTION OF THE VARIOUS HYDROXY GROUPS OF CHOLIC ACID AND DERIVATIVES. A REVIEW. ORG PREP PROCED INT 1999. [DOI: 10.1080/00304949909355705] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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