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Kishimoto Y, Fujii A, Nakagawa O, Obika S. Enhanced duplex- and triplex-forming ability and enzymatic resistance of oligodeoxynucleotides modified by a tricyclic thymine derivative. Org Biomol Chem 2021; 19:8063-8074. [PMID: 34494641 DOI: 10.1039/d1ob01462e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We designed and synthesized an artificial nucleic acid, [3-(1,2-dihydro-2-oxobenzo[b][1,8]naphthyridine)]-2'-deoxy-D-ribofuranose (OBN), with a tricyclic structure in a nucleobase as a thymidine analog. Oligodeoxynucleotides (ODNs) containing consecutive OBN displayed improved duplex-forming ability with complementary single-stranded (ss) RNA and triplex-forming ability with double-stranded DNA in comparison with ODNs composed of natural thymidine. OBN-modified ODNs also displayed enhanced enzymatic resistance compared with ODNs with natural thymidine and phosphorothioate modification, respectively, due to the structural steric hindrance of the nucleobase. The fluorescence spectra of OBN-modified ODNs showed sufficient fluorescence intensity with ssDNA and ssRNA, which is an advantageous feature for fluorescence imaging techniques of nucleic acids with longer emission wavelengths than bicyclic thymine (bT).
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Affiliation(s)
- Yuki Kishimoto
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Core Research for Evolutional Science and Technology (CREST), Japan Sciences and Technology Agency (JST), 7 Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
| | - Akane Fujii
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Core Research for Evolutional Science and Technology (CREST), Japan Sciences and Technology Agency (JST), 7 Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
| | - Osamu Nakagawa
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Core Research for Evolutional Science and Technology (CREST), Japan Sciences and Technology Agency (JST), 7 Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, 180 Nishihamahoji, Yamashiro-cho, Tokushima 770-8514, Japan.
| | - Satoshi Obika
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Core Research for Evolutional Science and Technology (CREST), Japan Sciences and Technology Agency (JST), 7 Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
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Yang Z, Huo Y, Liu Y, Du G, Zhang W, Zhou L, Zhan L, Ren X, Duan W, Gong S. Axially chiral 1,4-dihydropyridine derivatives: aggregation-induced emission in exciplexes and application as viscosity probes. RSC Adv 2019; 9:32219-32225. [PMID: 35530811 PMCID: PMC9072944 DOI: 10.1039/c9ra06553a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 09/25/2019] [Indexed: 12/14/2022] Open
Abstract
By combining the fluorophores of axially chiral 1,1′-binaphthol (BINOL) and 1,4-dihydropyridine derivatives, axially chiral 1,4-dihydropyridine derivatives ((R)-/(S)-2) with aggregation-induced emission (AIE) in exciplexes were designed and synthesized. (R)-/(S)-2 emitted low fluorescence in THF solutions of their locally excited states; however, they emitted red-shifted fluorescence in the aggregate state upon exciplex formation. Moreover, (R)-/(S)-2 showed linear and multi-exponential relationships between their local excited and exciplex fluorescence intensities and the viscosity of the medium, which allowed us to determine the viscosities of different mixed solvents. In addition, as an axially chiral viscosity probe, (R)-/(S)-2 show excellent CD signals and have potential applications in the fields of chiral recognition and fluorescence imaging, which will broaden the new family of AIE fluorophores. To the best of our knowledge, there are few reports of axially chiral intramolecular exciplex-mediated AIE molecules. Axially chiral 1,4-dihydropyridine derivatives ((R)-/(S)-2) with aggregation-induced emission (AIE) in exciplex were designed and synthesized. They have excellent CD signals and can determine the different viscosity in mixed solvents.![]()
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Makhanya TR, Gengan RM, Pandian P, Chuturgoon AA, Tiloke C, Atar A. Phosphotungstic Acid Catalyzed One Pot Synthesis of 4,8,8-Trimethyl-5-phenyl-5,5a,8,9-tetrahydrobenzo[b] [1,8]Naphthyridin-6(7H)-one Derivatives and Their Biological Evaluation Against A549 Lung Cancer Cells. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3153] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Talent Raymond Makhanya
- Department of Chemistry, Faculty of Applied Science; Durban University of Technology; Durban 4000 South Africa
| | - Robert Moonsamy Gengan
- Department of Chemistry, Faculty of Applied Science; Durban University of Technology; Durban 4000 South Africa
| | - Pitchai Pandian
- PG and Research Department of Chemistry; Government Arts College (Autonomous); Kumbakonam Tamil Nadu 612 001 India
| | - Anil Amichund Chuturgoon
- Discipline of Medical Biochemistry and Chemical Pathology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences; University of KwaZulu-Natal; Private Bag 7, Congella Durban 4013 South Africa
| | - Charlette Tiloke
- Department of Chemistry, Faculty of Applied Science; Durban University of Technology; Durban 4000 South Africa
- Discipline of Medical Biochemistry and Chemical Pathology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences; University of KwaZulu-Natal; Private Bag 7, Congella Durban 4013 South Africa
| | - Atha Atar
- Department of Chemistry, Richardson College for the Environmental Science Complex; The University of Winnipeg; 599 Portage Avenue Winnipeg Manitoba R3B2G3 Canada
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Magesh Selva Kumar A, Vijaya Pandiyan B, Mohana Roopan S, Rajendran S. Efficient synthesis, fluorescence and DFT studies of different substituted 2-chloroquinoline-4-amines and benzo[g][1,8]naphthyridine derivatives. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.08.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Nandi S, Islam MM, Saha M, Mitra S, Khatua S, Pal AK. Regioselective synthesis of functionalized [1,6]-naphthyridines by KF/basic alumina as a recyclable catalyst and a brief study of their photophysical properties. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1209778] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Sibaji Nandi
- Centre for Advance Studies in Chemistry, North-eastern Hill University, Mawlai Campus, Shillong, India
| | - Mullah Muhaiminul Islam
- Centre for Advance Studies in Chemistry, North-eastern Hill University, Mawlai Campus, Shillong, India
| | - Mithu Saha
- State Key Laboratory of Physical Chemistry for Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Sivaprasad Mitra
- Centre for Advance Studies in Chemistry, North-eastern Hill University, Mawlai Campus, Shillong, India
| | - Snehadrinarayan Khatua
- Centre for Advance Studies in Chemistry, North-eastern Hill University, Mawlai Campus, Shillong, India
| | - Amarta Kumar Pal
- Centre for Advance Studies in Chemistry, North-eastern Hill University, Mawlai Campus, Shillong, India
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Deore R, Dingore K, Jachak M. An efficient Synthesis and Photophysical Properties of 1H-pyrazolo-[3,4-b]pyridine and pyrazolo[3,4-b][1,8]naphthyridines. J Fluoresc 2015; 25:1549-57. [PMID: 26411800 DOI: 10.1007/s10895-015-1674-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 09/18/2015] [Indexed: 11/24/2022]
Abstract
A novel synthon 6-amino-3-(4-methoxyphenyl)-1-phenyl-1H-pyrazolo[3,4-b] pyridine-5-carbaldehyde 4 was synthesized by multistep process. Then Friedlander condensation of this synthon with reactive methylenes was performed to achieve interesting tricyclic 6a-b, tetracyclic 6d and pentacyclic 6c N-heterocycles in excellent yield. The absorption and emission spectra of compounds 1-4 and 6 were measured and observed that the absorption and emission depends on the substituent at C-6 and C-7 position of pyridine ring in naphthyridines skeleton 6.
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Affiliation(s)
- Raviraj Deore
- Organic Chemistry Research Centre, Department of Chemistry, K.T.H.M. College, Gangapur Road, Nashik, 422002, Maharashtra, India.,Savitribai Phule Pune University, Pune, India
| | - Kunal Dingore
- Organic Chemistry Research Centre, Department of Chemistry, K.T.H.M. College, Gangapur Road, Nashik, 422002, Maharashtra, India.,Savitribai Phule Pune University, Pune, India
| | - Madhukar Jachak
- Organic Chemistry Research Centre, Department of Chemistry, K.T.H.M. College, Gangapur Road, Nashik, 422002, Maharashtra, India. .,Savitribai Phule Pune University, Pune, India.
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Synthesis of 3,13-dichlorobenzo[b]quino[4,3-h][1,6]naphthyridin-6(5H)-one derivatives from 2-oxoquinoline-3-carbonyl chloride and 2,6-dichloroquinolin-4-amine. Chem Heterocycl Compd (N Y) 2015. [DOI: 10.1007/s10593-015-1706-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Shelar DP, Rote RV, Patil SR, Jachak MN. Effects of homogeneous media, binary mixtures and microheterogeneous media on the fluorescence and fluorescence probe properties of some benzo[b][1,8]naphthyridiens with HSA and BSA. LUMINESCENCE 2011; 27:398-413. [PMID: 22102403 DOI: 10.1002/bio.1364] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 07/30/2011] [Accepted: 09/01/2011] [Indexed: 11/07/2022]
Abstract
A rapid and efficient method for the synthesis of various poly-substituted benzo[b][1,8]naphthyridines in high yield has been developed via the Friedländer condensation of 2-aminoquinoline-3-carbaldehyde 1 with various alicyclic ketones in a base catalyst (aq. potassium hydroxide). A series of benzo[b][1,8]naphthyridines branched with various side-chains and substituents were prepared with the aim of being investigated as a fluorescent agents. Electronic absorption and fluorescence properties of some representative benzonaphthyridines (3d, 5b and 21f) in homogeneous organic solvents, dioxane-water binary mixtures and in the microheterogeneous media (sodium dodecyl sulphate (SDS), cetyl trimethyl ammonium bromide (CTAB) and Triton-X100 micelles) have been examined. A linear correlation between solvent polarity and fluorescence properties was observed. Further, the interaction of these benzonaphthyridines (3d, 5b and 21f) with human serum albumin (HSA) and bovine serum albumin (BSA) in phosphate buffer have been examined by UV-vis absorption and fluorescence spectroscopy. The fluorescence intensity of 3d, 5b and 21f increases with the increasing HSA and BSA concentration. These benzonaphthyridines also quench the 345 nm fluorescence of BSA in phosphate buffer (λ(ex) 280 nm). These compounds have potential for use as neutral and hydrophobic fluorescence probes for examining the microenvironments in proteins, polymers, micelles, etc.
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Affiliation(s)
- Deepak P Shelar
- Organic Chemistry Research Centre, Department of Chemistry, KTHM College, Gangapur Road, Nashik, 422002, MS, India
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A fluorescence and fluorescence probe study of benzonaphthyridines. J Fluoresc 2011; 22:17-29. [PMID: 21845371 DOI: 10.1007/s10895-011-0945-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Accepted: 08/02/2011] [Indexed: 10/17/2022]
Abstract
A series of benzo[b][1,8]naphthyridines has been synthesized by Friedländer condensation of 2-aminoquinoline-3-carbaldehyde 1 (o-aminoaldehyde) with alicyclic ketones in basic medium. Benzonaphthyridines branched with various side-chains and substituents are prepared with the aim of being investigated as a good fluorescent material. Electronic absorption and fluorescence properties of some representative benzonaphthyridines in organic solvents, water-dioxane, and SDS, CTAB and Triton-X-100 micelles have been examined. The linear correlation between solvent polarity and fluorescence properties is observed. This study may provide new directions for the development of fluorescence probes as reporters of microenvironments of organized assemblies.
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