51
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Chen B, Roy SG, McMonigle RJ, Keebaugh A, McCracken AN, Selwan E, Fransson R, Fallegger D, Huwiler A, Kleinman MT, Edinger AL, Hanessian S. Azacyclic FTY720 Analogues That Limit Nutrient Transporter Expression but Lack S1P Receptor Activity and Negative Chronotropic Effects Offer a Novel and Effective Strategy to Kill Cancer Cells in Vivo. ACS Chem Biol 2016; 11:409-14. [PMID: 26653336 DOI: 10.1021/acschembio.5b00761] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
FTY720 sequesters lymphocytes in secondary lymphoid organs through effects on sphingosine-1-phosphate (S1P) receptors. However, at higher doses than are required for immunosuppression, FTY720 also functions as an anticancer agent in multiple animal models. Our published work indicates that the anticancer effects of FTY720 do not depend on actions at S1P receptors but instead stem from FTY720s ability to restrict access to extracellular nutrients by down-regulating nutrient transporter proteins. This result was significant because S1P receptor activation is responsible for FTY720s dose-limiting toxicity, bradycardia, that prevents its use in cancer patients. Here, we describe diastereomeric and enantiomeric 3- and 4-C-aryl 2-hydroxymethyl pyrrolidines that are more active than the previously known analogues. Of importance is that these compounds fail to activate S1P1 or S1P3 receptors in vivo but retain inhibitory effects on nutrient transporter proteins and anticancer activity in solid tumor xenograft models. Our studies reaffirm that the anticancer activity of FTY720 does not depend upon S1P receptor activation and uphold the promise of using S1P receptor-inactive azacyclic FTY720 analogues in human cancer patients.
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52
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Büschleb M, Dorich S, Hanessian S, Tao D, Schenthal KB, Overman LE. Strategien für die Synthese von Naturstoffen mit benachbarten stereogenen quartären Kohlenstoffatomen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201507549] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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53
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Abstract
Current major advances in drug discovery can be traced back to pioneering contributions originating from academics over a century ago. Living in a symbiotic yet noninvasive coexistence, the academic community and the pharmaceutical industry have strived, each in their own way, to develop the modern medicines that benefit humankind today. The subject is presented from a historical and personal perspective.
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54
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Chattopadhyay AK, Ly VL, Jakkepally S, Berger G, Hanessian S. Total Synthesis of Isodaphlongamine H: A Possible Biogenetic Conundrum. Angew Chem Int Ed Engl 2016; 55:2577-81. [DOI: 10.1002/anie.201510861] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Indexed: 11/08/2022]
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55
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Hanessian S. The enterprise of drug discovery from an academic perspective: From concept to practice. Med Chem 2016. [DOI: 10.4172/2161-0444.c1.023] [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]
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56
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Maianti JP, Hanessian S. Structural hybridization of three aminoglycoside antibiotics yields a potent broad-spectrum bactericide that eludes bacterial resistance enzymes. MEDCHEMCOMM 2016. [DOI: 10.1039/c5md00429b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Systematically blending structural features from obsolete aminoglycosides gleaned from X-ray co-crystal models rendered a promising antibiotic inert to enzymatic modification.
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57
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Berger G, Vilchis‐Reyes M, Hanessian S. Structural Properties and Stereochemically Distinct Folding Preferences of 4,5‐
cis
and
trans
‐Methano‐
L
‐Proline Oligomers: The Shortest Crystalline PPII‐Type Helical Proline‐Derived Tetramer. Angew Chem Int Ed Engl 2015; 54:13268-72. [DOI: 10.1002/anie.201506208] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Indexed: 12/12/2022]
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58
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Berger G, Vilchis‐Reyes M, Hanessian S. Structural Properties and Stereochemically Distinct Folding Preferences of 4,5‐
cis
and
trans
‐Methano‐
L
‐Proline Oligomers: The Shortest Crystalline PPII‐Type Helical Proline‐Derived Tetramer. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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59
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Hanessian S, Cusson JP, Chénard E. On the Importance of the Relative Stereochemistry of Substituents in the Formation of Nine-Membered Lactones by Ring-Closing Metathesis. SYNTHESIS-STUTTGART 2015. [DOI: 10.1055/s-0034-1380130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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60
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Salinas JC, Migawa MT, Merner BL, Hanessian S. Alternative syntheses of (S)-cEt-BNA: a key constrained nucleoside component of bioactive antisense gapmer sequences. J Org Chem 2014; 79:11651-60. [PMID: 25401196 DOI: 10.1021/jo502320y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Approaches to the synthesis of the constrained 5-methyluracil nucleoside (S)-cEt-BNA, a key "gapmer" unit in a number of biologically relevant antisense oligonucleotides, are described using 5-methyluridine as starting material. In the shorter synthesis, a nine-step linear sequence afforded a O-protected (S)-cEt-BNA consisting of a [2.2.1]dioxabicycloheptane core in 7% overall yield. A competing reaction in an intramolecular cyclization of a tosylate led to a bicyclic oxetane.
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61
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Hanessian S, Chénard E, Guesné S, Cusson JP. Conception and Evolution of Stereocontrolled Strategies toward Functionalized 8-Aryloctanoic Acids Related to the Total Synthesis of Aliskiren. J Org Chem 2014; 79:9531-45. [DOI: 10.1021/jo5015195] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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62
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Maianti JP, Kanazawa H, Dozzo P, Matias RD, Feeney LA, Armstrong ES, Hildebrandt DJ, Kane TR, Gliedt MJ, Goldblum AA, Linsell MS, Aggen JB, Kondo J, Hanessian S. Toxicity modulation, resistance enzyme evasion, and A-site X-ray structure of broad-spectrum antibacterial neomycin analogs. ACS Chem Biol 2014; 9:2067-73. [PMID: 25019242 DOI: 10.1021/cb5003416] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Aminoglycoside antibiotics are pseudosaccharides decorated with ammonium groups that are critical for their potent broad-spectrum antibacterial activity. Despite over three decades of speculation whether or not modulation of pKa is a viable strategy to curtail aminoglycoside kidney toxicity, there is a lack of methods to systematically probe amine-RNA interactions and resultant cytotoxicity trends. This study reports the first series of potent aminoglycoside antibiotics harboring fluorinated N1-hydroxyaminobutyryl acyl (HABA) appendages for which fluorine-RNA contacts are revealed through an X-ray cocrystal structure within the RNA A-site. Cytotoxicity in kidney-derived cells was significantly reduced for the derivative featuring our novel β,β-difluoro-HABA group, which masks one net charge by lowering the pKa without compromising antibacterial potency. This novel side-chain assists in evasion of aminoglycoside-modifying enzymes, and it can be easily transferred to impart these properties onto any number of novel analogs.
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63
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Hanessian S, Saavedra OM, Vilchis-Reyes MA, Maianti JP, Kanazawa H, Dozzo P, Matias RD, Serio A, Kondo J. Synthesis, broad spectrum antibacterial activity, and X-ray co-crystal structure of the decoding bacterial ribosomal A-site with 4′-deoxy-4′-fluoro neomycin analogs. Chem Sci 2014. [DOI: 10.1039/c4sc01626b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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64
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Focken T, Hanessian S. Application of cyclic phosphonamide reagents in the total synthesis of natural products and biologically active molecules. Beilstein J Org Chem 2014; 10:1848-77. [PMID: 25246946 PMCID: PMC4168934 DOI: 10.3762/bjoc.10.195] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 06/26/2014] [Indexed: 12/12/2022] Open
Abstract
A review of the synthesis of natural products and bioactive compounds adopting phosphonamide anion technology is presented highlighting the utility of phosphonamide reagents in stereocontrolled bond-forming reactions. Methodologies utilizing phosphonamide anions in asymmetric alkylations, Michael additions, olefinations, and cyclopropanations will be summarized, as well as an overview of the synthesis of the employed phosphonamide reagents.
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65
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Sánchez-Larios E, Giacometti RD, Hanessian S. Application and Scope of Schreiber's Gold(I)-Catalyzed α-Pyrone Synthesis to Ring A Aromatic Podolactones. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402803] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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66
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Hanessian S, Jennequin T, Boyer N, Babonneau V, Soma U, Mannoury la Cour C, Millan MJ, De Nanteuil G. Design, Synthesis, and Optimization of Balanced Dual NK1/NK3 Receptor Antagonists. ACS Med Chem Lett 2014; 5:550-5. [PMID: 24900878 DOI: 10.1021/ml400528y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Accepted: 02/08/2014] [Indexed: 01/08/2023] Open
Abstract
In connection with a program directed at potent and balanced dual NK1/NK3 receptor ligands, a focused exploration of an original class of peptidomimetic derivatives was performed. The rational design and molecular hybridization of a novel phenylalanine core series was achieved to maximize the in vitro affinity and antagonism at both human NK1 and NK3 receptors. This study led to the identification of a new potent dual NK1/NK3 antagonist with pK i values of 8.6 and 8.1, respectively.
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67
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Chénard E, Hanessian S. Kinetic Diastereomer Differentiation in Au(III)- and Bi(III)-Catalyzed Benzylic Arylation: Concise and Stereocontrolled Synthesis of 2-Amino-1,1-diarylalkanes. Org Lett 2014; 16:2668-71. [DOI: 10.1021/ol500902p] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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68
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Hanessian S, Dorich S, Del Valle J. Synthesis of Functionalized Octahydroindoles Related to Daphnyphyllum Alkaloids. Synlett 2014. [DOI: 10.1055/s-0033-1340794] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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69
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Hanessian S, Saavedra OM, Vilchis-Reyes MA, Llaguno-Rueda AM. Synthesis of 4′-deoxy-4′-fluoro neamine and 4′-deoxy-4′-fluoro 4′-epi neamine. MEDCHEMCOMM 2014. [DOI: 10.1039/c4md00072b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The syntheses of 4′-deoxy-4′-fluoro neamine and 4′-deoxy-4′-fluoro 4′-epi neamine from the readily available neamine and paromamine are described.
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70
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Hanessian S, Mu C. Yb(OTf)3-Mediated Ring Opening of Functionalized Cyclopentane Epoxides with Aniline: Aspects of Regiochemistry and Stereochemistry. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)85] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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71
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Hanessian S, Chattopadhyay AK. Iminium Ion–Enamine Cascade Cyclizations: Facile Access to Structurally Diverse Azacyclic Compounds and Natural Products. Org Lett 2013; 16:232-5. [DOI: 10.1021/ol403229q] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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72
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Hanessian S, Babonneau V, Boyer N, Mannoury la Cour C, Millan MJ, De Nanteuil G. Design and synthesis of potential dual NK(1)/NK(3) receptor antagonists. Bioorg Med Chem Lett 2013; 24:510-4. [PMID: 24374277 DOI: 10.1016/j.bmcl.2013.12.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 12/04/2013] [Accepted: 12/09/2013] [Indexed: 11/17/2022]
Abstract
The tachykinin NK1 and NK3 receptors are a novel drug target for schizophrenia in order to treat not only the positive and cognitive symptoms, but also the associated co-morbid depression and sleep disturbances associated with the disease. A novel class of peptidomimetic derivatives based on a versatile phenylglycine central core was synthesized and tested in vitro as dual NK1/NK3 receptor antagonists. From this series emerged compounds with good NK1 receptor affinity, although only modest dual NK1/NK3 receptor affinity was observed with one of these analogs.
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73
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Fransson R, McCracken AN, Chen B, McMonigle RJ, Edinger AL, Hanessian S. Design, Synthesis, and Anti-leukemic Activity of Stereochemically Defined Constrained Analogs of FTY720 (Gilenya). ACS Med Chem Lett 2013; 4. [PMID: 24273632 DOI: 10.1021/ml4002425] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
FTY720 functions as an immunosuppressant due to its effect on sphingosine-1-phosphate receptors. At doses well above those needed for immunosuppression, FTY720 also has anti-neoplastic actions. Our published work suggests that at least some of FTY720's anti-cancer activity is independent of its effects on S1P receptors and due instead to its ability to induce nutrient transporter down-regulation. Compounds that trigger nutrient transporter loss but lack FTY720's S1P receptor-related, dose-limiting toxicity have the potential to be effective and selective anti-tumor agents. In this study, a series of enantiomerically pure and stereochemically diverse O-substituted benzyl ethers of pyrrolidines was generated and tested for the ability to kill human leukemia cells. The stereochemistry of the hydroxymethyl was found to be a key determinant of compound activity. Moreover, phosphorylation of this group was not required for anti-leukemic activity.
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74
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Hanessian S, Schroeder BR, Merner BL, Chen B, Swayze EE, Seth PP. Synthesis of cis- and trans-α-l-[4.3.0]bicyclo-DNA monomers for antisense technology: methods for the diastereoselective formation of bicyclic nucleosides. J Org Chem 2013; 78:9051-63. [PMID: 23937280 DOI: 10.1021/jo401166q] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Two α-L-ribo-configured bicyclic nucleic acid modifications, represented by analogues 12 and 13, which are epimeric at C3' and C5' have been synthesized using a carbohydrate-based approach to build the bicyclic core structure. An intramolecular L-proline-mediated aldol reaction was employed to generate the cis-configured ring junction of analogue 12 and represents a rare application of this venerable organocatalytic reaction to a carbohydrate system. In the case of analogue 13, where a trans-ring junction was desired, an intermolecular diastereoselective Grignard reaction followed by ring-closing metathesis was used. In order to set the desired stereochemistry at the C5' positions of both nucleoside targets, a study of diastereoselective Lewis acid mediated allylation reactions on a common bicyclic aldehyde precursor was carried out. Analogue 12 was incorporated in oligonucleotide sequences, and thermal denaturation experiments indicate that it is destabilizing when paired with complementary DNA and RNA. However, this construct shows a significant improvement in nuclease stability relative to a DNA oligonucleotide.
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75
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Hanessian S, Wagger J, Merner BL, Giacometti RD, Ostergaard ME, Swayze EE, Seth PP. A constrained tricyclic nucleic acid analogue of α-L-LNA: investigating the effects of dual conformational restriction on duplex thermal stability. J Org Chem 2013; 78:9064-75. [PMID: 23937256 DOI: 10.1021/jo401170y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A constrained tricyclic analogue of α-L-LNA (2), which contains dual modes of conformational restriction about the ribose sugar moiety, has been synthesized and characterized by X-ray crystallography. Thermal denaturation experiments of oligonucleotide sequences containing this tricyclic α-L-LNA analogue (α-L-TriNA 2, 5) indicate that this modification is moderately stabilizing when paired with complementary DNA and RNA, but less stabilizing than both α-L-LNA (2) and α-L-TriNA 1 (4).
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