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Padhi B, Reddy GS, Mallampudi NA, Choudhury UM, Mohapatra DK. CuBr 2-catalyzed diastereoselective allylation: total synthesis of decytospolides A and B and their C6-epimers. Org Biomol Chem 2020; 18:2685-2695. [PMID: 32202577 DOI: 10.1039/c9ob02689d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient CuBr2-catalyzed diastereoselective allylation of a cyclic hemiacetal with allyltrimethylsilane as a nucleophile has been developed. The protocol offers a cost effective, protecting group tolerant, and operationally simple approach to 2,6-trans-disubstituted tetrahydropyran with excellent diastereoselectivity. Furthermore, the application of this methodology has been demonstrated in the total synthesis of decytospolides A and B and their C6-epimers.
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Affiliation(s)
- Birakishore Padhi
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India.
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2
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Weber A, Döhl K, Sachs J, Nordschild ACM, Schröder D, Kulik A, Fischer T, Schmitt L, Teusch N, Pietruszka J. Synthesis and cytotoxic activities of goniothalamins and derivatives. Bioorg Med Chem 2017; 25:6115-6125. [PMID: 28214230 DOI: 10.1016/j.bmc.2017.02.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 01/26/2017] [Accepted: 02/02/2017] [Indexed: 12/14/2022]
Abstract
Substituted goniothalamins containing cyclopropane-groups were efficiently prepared in high yields and good selectivity. Antiproliferative activity was measured on three human cancer cell lines (A549, MCF-7, HBL-100), to show which of the structural elements of goniothalamins is mandatory for cytotoxicity. We found that the configuration of the stereogenic centre of the δ-lactone plays an important role for cytotoxicity. In our studies only (R)-configured goniothalamins showed antiproliferative activity, whereby (R)-configuration accords to natural goniothalamin (R)-1. Additionally, the δ-lactone needs to be unsaturated whereas our results show that the vinylic double bond is not mandatory for cytotoxicity. Furthermore, with a two-fold in vitro and in vivo strategy, we determined the inhibitory effect of the compounds to the yeast protein Pdr5. Here, we clearly demonstrate that the configuration seems to be of minor influence, only, while the nature of the substituent of the phenyl ring is of prime importance.
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Affiliation(s)
- Anja Weber
- Institut für Bioorganische Chemie (IBOC), Heinrich-Heine-Universität Düsseldorf im Forschungszentrum Jülich, Stetternicher Forst, Geb. 15.8, 52426 Jülich, Germany
| | - Katja Döhl
- Institut für Biochemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Julia Sachs
- Bio-Pharmaceutical Chemistry and Molecular Pharmacology, Faculty of Applied Science, Technische Hochschule Köln, CHEMPARK, E39 51368 Leverkusen, Germany
| | - Anja C M Nordschild
- Institut für Bioorganische Chemie (IBOC), Heinrich-Heine-Universität Düsseldorf im Forschungszentrum Jülich, Stetternicher Forst, Geb. 15.8, 52426 Jülich, Germany
| | - Dennis Schröder
- IBG-1: Biotechnologie, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Andrea Kulik
- Bio-Pharmaceutical Chemistry and Molecular Pharmacology, Faculty of Applied Science, Technische Hochschule Köln, CHEMPARK, E39 51368 Leverkusen, Germany
| | - Thomas Fischer
- BIO-MAR im Augenzentrum Friedrichstadt, Friedrichstraße 140, 40217 Düsseldorf, Germany
| | - Lutz Schmitt
- Institut für Biochemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Nicole Teusch
- Bio-Pharmaceutical Chemistry and Molecular Pharmacology, Faculty of Applied Science, Technische Hochschule Köln, CHEMPARK, E39 51368 Leverkusen, Germany
| | - Jörg Pietruszka
- Institut für Bioorganische Chemie (IBOC), Heinrich-Heine-Universität Düsseldorf im Forschungszentrum Jülich, Stetternicher Forst, Geb. 15.8, 52426 Jülich, Germany; IBG-1: Biotechnologie, Forschungszentrum Jülich, 52428 Jülich, Germany.
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3
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Trost BM, Knopf JD, Brindle CS. Synthetic Strategies Employed for the Construction of Fostriecin and Related Natural Products. Chem Rev 2016; 116:15035-15088. [PMID: 28027648 PMCID: PMC5720176 DOI: 10.1021/acs.chemrev.6b00488] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fostriecin and related natural products present a significant challenge for synthetic chemists due to their structural complexity and chemical sensitivity. This review will chronicle the successful efforts of synthetic chemists in the construction of these biologically active molecules. Key carbon-carbon bond forming reactions will be highlighted, as well as the methods used to install the numerous stereocenters present in this class of compounds.
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Affiliation(s)
- Barry M. Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Joshua D. Knopf
- Department of Chemistry, Trinity College, 300 Summit Street, Hartford, Connecticut 06106, United States
| | - Cheyenne S. Brindle
- Department of Chemistry, Trinity College, 300 Summit Street, Hartford, Connecticut 06106, United States
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4
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Meruva SB, Rao K. R, Mohammed A, Dahanukar VH, Kumar UKS, Dubey PK. Asymmetric synthesis of (–)-leiocarpin A via (–)-(S)-goniothalamin employing Julia–Kocienski olefination. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2015.1128546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Suresh Babu Meruva
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd., Miyapur, Hyderabad, India
- Department of Chemistry, College of Engineering, JNTUH, Kukatpally, Hyderabad, India
| | - Raghavendra Rao K.
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd., Miyapur, Hyderabad, India
| | - Aaseef Mohammed
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd., Miyapur, Hyderabad, India
| | - Vilas H. Dahanukar
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd., Miyapur, Hyderabad, India
| | - U. K. Syam Kumar
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd., Miyapur, Hyderabad, India
| | - P. K. Dubey
- Department of Chemistry, College of Engineering, JNTUH, Kukatpally, Hyderabad, India
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5
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Suchaichit N, Kanokmedhakul K, Panthama N, Poopasit K, Moosophon P, Kanokmedhakul S. A 2H-tetrahydropyran derivative and bioactive constituents from the bark of Goniothalamus elegants Ast. Fitoterapia 2015; 103:206-12. [DOI: 10.1016/j.fitote.2015.04.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 04/03/2015] [Accepted: 04/06/2015] [Indexed: 11/29/2022]
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6
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Reddy DS, Padhi B, Mohapatra DK. Highly Stereocontrolled Synthesis of trans-2,6-Disubstituted-5-methyl-3,6-dihydropyrans: Stereoselective Synthesis of the Bicyclic Core of Penostatin B. J Org Chem 2015; 80:1365-74. [DOI: 10.1021/jo502101u] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- D. Srinivas Reddy
- Natural Products Chemistry Division, CSIR−Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - Birakishore Padhi
- Natural Products Chemistry Division, CSIR−Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - Debendra K. Mohapatra
- Natural Products Chemistry Division, CSIR−Indian Institute of Chemical Technology, Hyderabad 500 007, India
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7
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Emerging anticancer potentials of goniothalamin and its molecular mechanisms. BIOMED RESEARCH INTERNATIONAL 2014; 2014:536508. [PMID: 25247178 PMCID: PMC4163372 DOI: 10.1155/2014/536508] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 07/23/2014] [Accepted: 07/25/2014] [Indexed: 12/13/2022]
Abstract
The treatment of most cancers is still inadequate, despite tremendous steady progress in drug discovery and effective prevention. Nature is an attractive source of new therapeutics. Several medicinal plants and their biomarkers have been widely used for the treatment of cancer with less known scientific basis of their functioning. Although a wide array of plant derived active metabolites play a role in the prevention and treatment of cancer, more extensive scientific evaluation of their mechanisms is still required. Styryl-lactones are a group of secondary metabolites ubiquitous in the genus Goniothalamus that have demonstrated to possess antiproliferative activity against cancer cells. A large body of evidence suggests that this activity is associated with the induction of apoptosis in target cells. In an effort to promote further research on the genus Goniothalamus, this review offers a broad analysis of the current knowledge on Goniothalamin (GTN) or 5, 6, dihydro-6-styryl-2-pyronone (C13H12O2), a natural occurring styryl-lactone. Therefore, it includes (i) the source of GTN and other metabolites; (ii) isolation, purification, and (iii) the molecular mechanisms of actions of GTN, especially the anticancer properties, and summarizes the role of GTN which is crucial for drug design, development, and application in future for well-being of humans.
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8
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Fodran P, Minnaard AJ. Catalytic synthesis of enantiopure mixed diacylglycerols – synthesis of a major M. tuberculosis phospholipid and platelet activating factor. Org Biomol Chem 2014; 11:6919-28. [PMID: 24191360 DOI: 10.1039/c3ob41483c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient catalytic one-pot synthesis of TBDMS-protected diacylglycerols has been developed, starting from enantiopure glycidol. Subsequent migration-free deprotection leads to stereo- and regiochemically pure diacylglycerols. This novel strategy has been applied to the synthesis of a major Mycobacterium tuberculosis phospholipid, its desmethyl analogue, and platelet activating factor.
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9
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Warner MC, Shevchenko GA, Jouda S, Bogár K, Bäckvall JE. Dynamic Kinetic Resolution of Homoallylic Alcohols: Application to the Synthesis of Enantiomerically Pure 5,6-Dihydropyran-2-ones and δ-Lactones. Chemistry 2013; 19:13859-64. [DOI: 10.1002/chem.201301980] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Indexed: 11/09/2022]
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10
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Styryl-lactone goniothalamin inhibits TNF-α-induced NF-κB activation. Food Chem Toxicol 2013; 59:572-8. [PMID: 23845509 DOI: 10.1016/j.fct.2013.06.051] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 06/22/2013] [Accepted: 06/26/2013] [Indexed: 01/01/2023]
Abstract
(R)-(+)-Goniothalamin (GTN), a styryl-lactone isolated from the medicinal plant Goniothalamus macrophyllus, exhibits pharmacological activities including cytotoxic and anti-inflammatory effects. In this study, GTN modulated TNF-α induced NF-κB activation. GTN concentrations up to 20 μM showed low cytotoxic effects in K562 chronic myelogenous leukemia and in Jurkat T cells. Importantly, at these concentrations, no cytotoxicity was observed in healthy peripheral blood mononuclear cells. Our results confirmed that GTN inhibited tumor necrosis factor-α (TNF-α)-induced NF-κB activation in Jurkat and K562 leukemia cells at concentrations as low as 5 μM as shown by reporter gene assays and western blots. Moreover, GTN down-regulated translocation of the p50/p65 heterodimer to the nucleus, prevented binding of NF-κB to its DNA response element and reduced TNF-α-activated interleukin-8 (IL-8) expression. In conclusion, GTN inhibits TNF-α-induced NF-κB activation at non-apoptogenic concentrations in different leukemia cell models without presenting toxicity towards healthy blood cells underlining the anti-leukemic potential of this natural compound.
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11
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Design, synthesis, in vitro cytotoxicity evaluation and structure–activity relationship of Goniothalamin analogs. Arch Pharm Res 2013; 36:812-31. [DOI: 10.1007/s12272-013-0099-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Accepted: 03/13/2013] [Indexed: 10/27/2022]
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12
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Tomas L, Bourdon B, Caille JC, Gueyrard D, Goekjian PG. A Concise and Efficient Synthesis of Spiroketals - Application to the Synthesis of SPIKET-P and a Spiroketal fromBactroceraSpecies. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201199] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Fischer T, Pietruszka J. Alcohol Dehydrogenase‐Catalyzed Synthesis of Enantiomerically Pure
δ
‐Lactones as Versatile Intermediates for Natural Product Synthesis. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200258] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thomas Fischer
- Institut für Bioorganische Chemie der Heinrich‐Heine‐Universität Düsseldorf im Forschungszentrum Jülich, Stetternicher Forst Geb. 15.8, 52426 Jülich, Germany, Fax: (+49)‐2461‐616196
| | - Jörg Pietruszka
- Institut für Bioorganische Chemie der Heinrich‐Heine‐Universität Düsseldorf im Forschungszentrum Jülich, Stetternicher Forst Geb. 15.8, 52426 Jülich, Germany, Fax: (+49)‐2461‐616196
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14
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Yang Y, Jia P, Liu S, Yu W. BiX
3
and FeX
3
‐Promoted Prins Cyclization of Enol Ethers in CH
2
Cl
2. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201100659] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yi Yang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Pingjing Jia
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Suping Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Wei Yu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
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15
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16
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18
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Sabitha G, Bhaskar V, Siva Sankara Reddy S, Yadav JS. Synthesis of Stereoisomers of Cryptofolione 6′-Mono- and 4′,6′-Di-O-benzyl Ethers. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201190015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Denmark SE, Muhuhi JM. Development of a general, sequential, ring-closing metathesis/intramolecular cross-coupling reaction for the synthesis of polyunsaturated macrolactones. J Am Chem Soc 2010; 132:11768-78. [PMID: 20666473 PMCID: PMC2923678 DOI: 10.1021/ja1047363] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A general strategy for the construction of macrocyclic lactones containing conjugated Z,Z-1,3-diene subunits is described. The centerpiece of the strategy is a sequential ring-closing metathesis (RCM) that forms an unsaturated siloxane ring, followed by an intramolecular cross-coupling reaction with a pendant alkenyl iodide. A highly modular assembly of the various precursors allowed the preparation of unsaturated macrolactones containing 11-, 12-, 13-, and 14-membered rings. Although the RCM process proceeded uneventfully, the intramolecular cross-coupling required extensive optimization of palladium source, solvent, fluoride source, and particularly fluoride hydration level. Under the optimal conditions (including syringe pump high dilution), the macrolactones were produced in 53-78% yield as single stereoisomers. A benzo-fused 12-membered-ring macrolactone containing an E,Z-1,3-diene unit was also prepared by the same general strategy. The E-2-styryl iodide was prepared by a novel Heck reaction of an aryl nonaflate with vinyltrimethylsilane followed by iododesilylation with ICl.
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Affiliation(s)
- Scott E Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA.
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20
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Mohapatra DK, Das PP, Pattanayak MR, Yadav JS. Iodine-catalyzed highly diastereoselective synthesis of trans-2,6-disubstituted-3,4-dihydropyrans: application to concise construction of C28-C37 bicyclic core of (+)-sorangicin A. Chemistry 2010; 16:2072-8. [PMID: 20099288 DOI: 10.1002/chem.200902999] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A novel iodine-catalyzed highly diastereoselective synthesis of trans-2,6-disubstituted-3,4-dihydropyrans have been achieved from delta-hydroxy alpha,beta-unsaturated aldehydes by treating with allyltrimethyl silane in THF at room temperature with good to excellent yields. This methodology has been successfully implemented for a concise asymmetric synthesis of C28-C37 dioxabicyclo[3.2.1]octane ring system of (+)-sorangicin A in 8 steps with 21% overall yield.
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Affiliation(s)
- Debendra K Mohapatra
- Organic Chemistry Division-I, Indian Institute of Chemical Technology, Council of Scientific & Industrial Research (CSIR), Habsiguda, Uppal Road, Hyderabad-500007, India.
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21
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Glycosylated vinyl ethers by the Julia–Lythgoe–Kocienski olefination: application to the synthesis of 2′,5′-dideoxydisaccharides and carbohydrated β-lactams. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.05.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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Harsh P, O'Doherty GA. De Novo Asymmetric Syntheses of (+)-Goniothalamin, (+)-Goniothalamin oxide and 7,8-Bis-epi-Goniothalamin using Asymmetric Allylations. Tetrahedron 2009; 65:5051-5055. [PMID: 20161297 DOI: 10.1016/j.tet.2009.03.097] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A highly enantio- and diastereoselective approach to either enantiomer of (+)-goniothalamin, (+)-goniothalamin oxide and 7,8-bis-epi-goniothalamin oxide has been developed from achiral cinnamyl alcohol or cinnamaldehyde. The asymmetry of the synthesis was installed by means of a Krische or Leighton allylation. The remaining stereochemistry was installed by a diastereoselective epoxidation.
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Affiliation(s)
- Philip Harsh
- Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506
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23
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Marquissolo C, de Fátima A, Kohn LK, Ruiz ALTG, de Carvalho JE, Pilli RA. Asymmetric total synthesis and antiproliferative activity of goniothalamin oxide isomers. Bioorg Chem 2009; 37:52-6. [PMID: 19185327 DOI: 10.1016/j.bioorg.2008.12.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2008] [Revised: 12/07/2008] [Accepted: 12/09/2008] [Indexed: 10/21/2022]
Abstract
Goniothalamin oxide (1) is a styryl lactone which was isolated from bark and leaves of several Goniothalamus species. This natural product has some interesting biological properties such as larvicidal and tripanocidal activities. However, no studies on the antiproliferative profile of goniothalamin oxide (1) and its stereoisomers have been reported yet. Here, goniothalamin epoxide (1), isogoniothalamin epoxide (2) and their enantiomers were prepared via epoxidation of (R)-and (S)-goniothalamin (4). A 3:2 molar ratio in favor of goniothalamin oxide (1) and ent-1 was observed from (R)- and (S)-4, respectively, when 3-chloroperbenzoic acid (mCPBA) was employed while an increase to 6:1 molar ratio was achieved with (S,S)-Jacobsen's catalyst. Antiproliferative activity of these epoxides revealed that ent-isogoniothalamin oxide (ent-2) was the most active against the eight cancer cell lines studied. These results indicate that 6S, 7R and 8R absolute configurations are beneficial for the activity of these epoxides.
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Affiliation(s)
- Cilene Marquissolo
- Departamento de Química Orgânica, Instituto de Química, Universidade Estadual de Campinas, CP 6154, Campinas, SP 13083-970, Brazil
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24
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Affiliation(s)
- Tomohiro Nagasawa
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural Science, Tohoku University, Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan
| | - Shigefumi Kuwahara
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural Science, Tohoku University, Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan
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25
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C. Majumdar K, Muhuri S, Ul Islam R, Chattopadhyay B. Synthesis of Five- and Six-Membered Heterocyclic Compounds by the Application of the Metathesis Reactions. HETEROCYCLES 2009. [DOI: 10.3987/rev-08-646] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Ghosh AK, Gemma S, Baldridge A, Wang YF, Kovalevsky AY, Koh Y, Weber IT, Mitsuya H. Flexible cyclic ethers/polyethers as novel P2-ligands for HIV-1 protease inhibitors: design, synthesis, biological evaluation, and protein-ligand X-ray studies. J Med Chem 2008; 51:6021-33. [PMID: 18783203 PMCID: PMC2812926 DOI: 10.1021/jm8004543] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report the design, synthesis, and biological evaluation of a series of novel HIV-1 protease inhibitors. The inhibitors incorporate stereochemically defined flexible cyclic ethers/polyethers as high affinity P2-ligands. Inhibitors containing small ring 1,3-dioxacycloalkanes have shown potent enzyme inhibitory and antiviral activity. Inhibitors 3d and 3h are the most active inhibitors. Inhibitor 3d maintains excellent potency against a variety of multi-PI-resistant clinical strains. Our structure-activity studies indicate that the ring size, stereochemistry, and position of oxygens are important for the observed activity. Optically active synthesis of 1,3-dioxepan-5-ol along with the syntheses of various cyclic ether and polyether ligands have been described. A protein-ligand X-ray crystal structure of 3d-bound HIV-1 protease was determined. The structure revealed that the P2-ligand makes extensive interactions including hydrogen bonding with the protease backbone in the S2-site. In addition, the P2-ligand in 3d forms a unique water-mediated interaction with the NH of Gly-48.
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Affiliation(s)
- Arun K Ghosh
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA.
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27
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Stephenson KA, Wilson AA, Meyer JH, Houle S, Vasdev N. Facile Radiosynthesis of Fluorine-18 Labeled β-Blockers. Synthesis, Radiolabeling, and ex Vivo Biodistribution of [18F]-(2S and 2R)-1-(1-Fluoropropan-2-ylamino)-3-(m-tolyloxy)propan-2-ol. J Med Chem 2008; 51:5093-100. [DOI: 10.1021/jm800227h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Karin A. Stephenson
- Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8 Canada, and Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
| | - Alan A. Wilson
- Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8 Canada, and Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
| | - Jeffrey H. Meyer
- Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8 Canada, and Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
| | - Sylvain Houle
- Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8 Canada, and Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
| | - Neil Vasdev
- Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, M5T 1R8 Canada, and Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
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Pospíšil J, Markó IE. Metathesis-based synthesis of 3-methoxy α,β-unsaturated lactones: total synthesis of (R)-kavain and of the C1–C6 fragment of jerangolid D. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.12.113] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Application of the Cosford cross-coupling protocol for the stereoselective synthesis of (R)-(+)-goniothalamin, (R)-(+)-kavain and (S)-(+)-7,8-dihydrokavain. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.09.122] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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