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Liu C, Chen Q, Schneller SW. 2- and 3-Fluoro-3-deaza-1',6'-isoneplanocin: Synthesis and antiviral properties (including Ebola and Marburg). Bioorg Med Chem Lett 2023; 85:129219. [PMID: 36898483 DOI: 10.1016/j.bmcl.2023.129219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/18/2023] [Accepted: 03/05/2023] [Indexed: 03/11/2023]
Abstract
To extend the antiviral properties of 2- and 3-fluoro-3-deazaneplanocins into the evolving 3-deaza-1',6'-isoneplanocin library, 2- (11) and 3-fluoro-1',6'-iso-3-deazaneplanocin A (12) have been explored. The requisite synthesis began with an Ullmann reaction by coupling of a protected cyclopentenyl iodide with either 2-fluoro- or 3-fluoro-3-deazaadenine. Target 12 displayed significant activity towards 5 viruses (μM): H1N1 (EC50 < 0.36, CC50 > 357, SI > 1000), hepatitis B virus (EC50 1.28, CC50 > 357, SI > 279), norovirus (EC50 0.64, CC50 > 357, SI > 558), Ebola (EC50 < 0.1, CC50 > 100, SI > 1000), and Marburg (EC50 < 0.1, CC50 > 100, SI > 1000). On the other hand, while 11 showed limited antiviral effects, its toxicity was significant, precluding any further usefulness.
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Affiliation(s)
- Chong Liu
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, USA
| | - Qi Chen
- Department of Chemistry, Slippery Rock University, Slippery Rock, PA 16057, USA
| | - Stewart W Schneller
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, USA.
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2
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Lv YB, Chen C, Yu QM, Lyu L, Peng YF, Tan XD. Synthesis and biological evaluation of novel pentanediamide derivatives as S-adenosyl-l-homocysteine hydrolase inhibitors. Bioorg Med Chem Lett 2022; 72:128880. [PMID: 35809817 DOI: 10.1016/j.bmcl.2022.128880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/21/2022] [Accepted: 07/04/2022] [Indexed: 11/29/2022]
Abstract
A series of novel pentanediamide derivatives were designed, synthesized and evaluated as S-adenosyl-l-homocysteine hydrolase (SAHase) inhibitors in this study. Some compounds showed good inhibitory activity against SAHase. The optimal compound 7i showed good inhibitory activity against SAHase with IC50 value of 3.58 ± 0.19 μM, cytotoxicity with IC50 values ranging from 13.16 ± 1.44 to 21.23 ± 0.73 μM against four tumor cell lines (MCF-7, A549, MGC-803, Hela) and very weak cytotoxicity (IC50 = 84.22 ± 1.89 μM) on normal LO2 cells. In addition, compound 7i showed potency against respiratory syncytial virus with EC50 value of 27.4 μM and selectivity index of 6.84. Further molecular simulation study suggested that compound 7i had good ADMET properties, and strongly binds to the active site of SAHase. In summary, compound 7i could serve as a new lead compound for further screening novel non-adenosine SAHase inhibitors.
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Affiliation(s)
- Yu-Bin Lv
- College of Pharmacy, Guilin Medical University, Guilin 541199, China; The First People's Hospital of Fangchenggang, Fangchenggang 538021, China
| | - Cong Chen
- College of Pharmacy, Guilin Medical University, Guilin 541199, China
| | - Qi-Ming Yu
- College of Pharmacy, Guilin Medical University, Guilin 541199, China
| | - Liang Lyu
- College of Pharmacy, Guilin Medical University, Guilin 541199, China
| | - Yan-Fen Peng
- College of Pharmacy, Guilin Medical University, Guilin 541199, China.
| | - Xiang-Duan Tan
- College of Pharmacy, Guilin Medical University, Guilin 541199, China.
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Haverkamp C, Liu C, Schneller SW. Enantiomeric 4'-truncated 6'-fluoro-3-deazaneplanocin and its 3-bromo derivative: Synthesis and antiviral properties, including Ebola and Marburg. Bioorg Med Chem Lett 2021; 41:127985. [PMID: 33766766 DOI: 10.1016/j.bmcl.2021.127985] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 03/10/2021] [Accepted: 03/16/2021] [Indexed: 10/21/2022]
Abstract
In seeking to increase the library of fluorine containing adenine-derived carbocyclic nucleoside antiviral candidates, d-like and l-like 6'-fluoro-3-deazaneplanocin and its 3-bromo derivative lacking the 4'-hydroxylmethylene substituent (2/3 and 4/5, respectively) are presented. Their synthesis was accomplished from d-ribose by developing a more facile precursor route than suggested by the literature. The 2/4d-like pair displayed significant anti-filo virial properties while the enantiomeric l-like congeners 3/5 were inactive. Target compounds 2/4 also were active towards measles and norovirus. The effect of 2/4 is further evidence of the role fluoro-derived adenine carbocyclic nucleoside can play in antiviral drug discovery. Furthermore, the simplicity of their synthesis lends them to more efficacious analogs and to scale-up optimization. There were no other relevant antiviral properties for 2/3 and 4/5 (except BK polyomavirus for 3/5).
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Affiliation(s)
- Chloe Haverkamp
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL, United States
| | - Chong Liu
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL, United States
| | - Stewart W Schneller
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL, United States.
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Liu C, Coleman R, Archer A, Hussein I, Bowlin TL, Chen Q, Schneller SW. Enantiomeric 4'-Truncated 3-deaza-1',6'-isoneplanocins: Synthesis and antiviral properties including Ebola. Bioorg Med Chem Lett 2019; 29:2480-2482. [PMID: 31358469 DOI: 10.1016/j.bmcl.2019.07.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 07/08/2019] [Accepted: 07/10/2019] [Indexed: 10/26/2022]
Abstract
Enantiomeric 3-deaza-1',6'-isoneplanocins (C-3 unsubstituted 7a/7b and C-3 with a bromine 8a/8b) lacking the 4'-hydroxymethyl as mechanistically designed anti-viral targets have been prepared by utilizing the Ullmann reaction. Anti-Ebola properties were found for the D-like 7a and 8a and L-like 8b. All four products showed effects against human cytomegalovirus while D-like 7a/8a affected measles; 7a was effective versus norovirus and 8a inhibited Pichinde. Both 7a and 8a produced SAHase inhibitory effects. However, the anti-EBOV activity of 7a and 8a cannot be readily correlated with this observation due with their contrasting IC50 values (8a > 7a). It is to be noted that 7b showed no effects on this enzyme and 8b was minimally inhibitory. These results offer preliminary insight into the differing mechanisms of action of D- and L- like structures and enlighten structural features to guide additional antiviral agent pursuit in the isoneplanocin series.
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Affiliation(s)
- Chong Liu
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, United States
| | - Rachel Coleman
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, United States
| | - Ashley Archer
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, United States
| | - Islam Hussein
- Microbiotix, Inc., One Innovation Drive, Worcester, MA 01605, United States
| | - Terry L Bowlin
- Microbiotix, Inc., One Innovation Drive, Worcester, MA 01605, United States
| | - Qi Chen
- Department of Chemistry, Slippery Rock University, Slippery Rock, PA 16057, United States
| | - Stewart W Schneller
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, United States.
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Liu C, Chen Q, Cardinale S, Bowlin TL, Schneller SW. 6′-Fluoro-3-deazaneplanocin: Synthesis and antiviral properties, including Ebola. Bioorg Med Chem Lett 2018; 28:3674-3675. [DOI: 10.1016/j.bmcl.2018.10.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/18/2018] [Accepted: 10/20/2018] [Indexed: 11/25/2022]
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Chen Q, Liu C, Bowlin TL, Schneller SW. 5'-Hydroxy-5'-homoaristeromycin: Synthesis and antiviral properties. Bioorg Med Chem Lett 2018; 28:1456-1458. [PMID: 29628328 PMCID: PMC7126772 DOI: 10.1016/j.bmcl.2018.03.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 03/30/2018] [Indexed: 11/29/2022]
Abstract
Synthetically combining the C-4′ side-chain structural features of the antiviral candidates 5′-methylaristeromycin and 5′-homoaristeromycin into a diastereomeric pair of C-4′ side-chain dihydroxylated aristeromycins (6 and 7) is reported. Broad antiviral analyses of the both targets found promising effects towards HBV (6, 6.7 μM and 7, 7.74 μM) and HCMV (only 7, 0.72 μM). No other activity was found. Neither of the diastereomers was cytotoxic in the assays performed.
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Affiliation(s)
- Qi Chen
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, United States; Department of Chemistry, Slippery Rock University, Slippery Rock, PA 16057, United States
| | - Chong Liu
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, United States
| | - Terry L Bowlin
- Microbiotix, Inc., One Innovation Drive, Worcester, MA 01605, United States
| | - Stewart W Schneller
- Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, United States.
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Liu C, Chen Q, Schneller SW. Both enantiomers of 6'-Isoneplanocin. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2017; 36:631-636. [PMID: 29185898 DOI: 10.1080/15257770.2017.1370099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Both enantiomers of the isomer of neplanocin where the C-4' hydroxymethyl has been displaced to the 6'-position (that is, 6'-isoneplanocin) have been prepared in 5 steps from known, protected iodocyclopentenones. Both products were evaluated against a number of DNA and RNA viruses and found to be inactive. This observation is suggested to be due to the displacement of the C-4' hydroxymethyl of neplanocin (in the D-like form) away from the lysine425 of S-adenosylhomocysteine hydrolase, which is important for inhibition by neplanocin and, in turn, its antiviral activity.
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Affiliation(s)
- Chong Liu
- a Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry , Auburn University , Auburn , Al
| | - Qi Chen
- b Department of Chemistry , Slippery Rock University , Slippery Rock , PA
| | - Stewart W Schneller
- a Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry , Auburn University , Auburn , Al
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Abstract
Objective To synthesize 3,7-dideazaneplanocin and evaluate its antiviral potential. Methods The target 3,7-dideazaneplanocin has been prepared in five steps from a readily available cyclopentenol. A thorough in vitro antiviral analysis was conducted versus both DNA and RNA viruses. Results A rational synthesis of 3,7-dideazaneplanocin was conceived and successfully pursued in such a way that it can be adapted to various analogs of 3,7-dideazaneplanocin. Using standard antiviral assays, no activity for 3,7-dideazaneplanocn was found. Conclusion Two structural features are necessary for adenine-based carbocyclic nucleosides (like neplanocin) for potential antiviral properties: (i) inhibition of S-adenosylhomocysteine hydrolase and/or (ii) C-5′ activation via the mono-nucleotide. These two requisite adenine structural features to fit these criteria are not present in in the target 3,7-dideazaneplanocin: (i) an N-7 is necessary for inhibition of the hydrolase and the N-3 is claimed to be essential for phosphorylation at C-5′. Thus, it is not surprising that 3,7-dideazaneplaoncin lacked antiviral properties.
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Affiliation(s)
- Xue-Qiang Yin
- Department of Chemistry and Biochemistry, Molette Laboratory for Drug Discovery, Auburn University, Auburn, USA
| | - Stewart W Schneller
- Department of Chemistry and Biochemistry, Molette Laboratory for Drug Discovery, Auburn University, Auburn, USA
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Chen Q, Davidson A. Synthesis, conformational study and antiviral activity of l-like neplanocin derivatives. Bioorg Med Chem Lett 2017; 27:4436-4439. [PMID: 28807438 DOI: 10.1016/j.bmcl.2017.08.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/31/2017] [Accepted: 08/05/2017] [Indexed: 11/28/2022]
Abstract
The l-like enantiomer of 9-(trans-2', trans-3'-dihydroxycyclopent-4'-enyl)-3-deazaadenine (DHCDA) (1), its 3-deaza-3-bromo derivative (3), and the conformational restricted methanocarba (MC) nucleoside analogues (2 and 4) were synthesized. X-ray crystal structures showed the L isomer MC analogue 4 adopts a similar North-like locked conformation as conventional D-MC nucleosides, while the DHCDA analogue 3 preferred south-like conformer. Compounds 1 and 4 showed potent antiviral activity against norovirus, while compound 2 and 3 were less potent or inactive. The conformational behavior of "sugar" puckering (north/south) and nucleobase orientation (syn /anti) may contribute to the antiviral activity differences. For compound 3, antiviral activity was also found against Ebola virus.
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Affiliation(s)
- Qi Chen
- Department of Chemistry, Slippery Rock University, Slippery Rock, PA 16057, United States.
| | - Amber Davidson
- Department of Chemistry, Slippery Rock University, Slippery Rock, PA 16057, United States
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Liu C, Chen Q, Schneller SW. Enantiomeric 3-deaza-1′,6′-isoneplanocin and its 3-bromo analogue: Synthesis by the Ullmann reaction and their antiviral properties. Bioorg Med Chem Lett 2016; 26:928-930. [DOI: 10.1016/j.bmcl.2015.12.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 12/17/2015] [Accepted: 12/18/2015] [Indexed: 11/28/2022]
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Ye W, Schneller SW. The Synthesis of Both Diastereomers of 5'-Methylhomoaristeromycin. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2016; 35:105-13. [PMID: 26822838 DOI: 10.1080/15257770.2015.1114131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The preparation of the C-5' diastereomers of 5'-homoaristeromycin has been achieved in 6 steps beginning with readily available (3aR,6aR)-2,2-dimethyl-2H,3aH,4H,6aH-cyclopenta[1,3]dioxol-4-one in a Michael reaction employing chiral Evans N-acyloxazolidinones that served to direct the requisite side chain stereochemistry. The two targets were evaluated against a battery of viruses and found to possess activity only towards yellow fever. Both compounds were non-cytotoxic.
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Affiliation(s)
- Wei Ye
- a Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University , Auburn , Alabama 36849
| | - Stewart W Schneller
- a Molette Laboratory for Drug Discovery, Department of Chemistry and Biochemistry, Auburn University , Auburn , Alabama 36849
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Synthesis and anticancer activities of novel 8-azapurine carbocyclic nucleoside hydrazones. Bioorg Med Chem Lett 2015; 25:4461-3. [DOI: 10.1016/j.bmcl.2015.09.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 08/28/2015] [Accepted: 09/01/2015] [Indexed: 11/20/2022]
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2- and 3-Fluoro-3-deazaneplanocins, 2-fluoro-3-deazaaristeromycins, and 3-methyl-3-deazaneplanocin: Synthesis and antiviral properties. Bioorg Med Chem 2015; 23:5496-501. [DOI: 10.1016/j.bmc.2015.07.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Revised: 07/11/2015] [Accepted: 07/19/2015] [Indexed: 11/16/2022]
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