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Singh G, Gupta N, Sethi N, Gupta V, Raj T, Ishar MPS. Facile Synthesis of Some New Peptidomimetic β 3 -and β 2,3 -Amino Alcohols Possessing Pyridyl Moiety via Reductive Ring Opening of Pyridyl-isoxazolidines. Chem Biodivers 2024; 21:e202301323. [PMID: 38116925 DOI: 10.1002/cbdv.202301323] [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: 08/31/2023] [Revised: 11/21/2023] [Accepted: 12/18/2023] [Indexed: 12/21/2023]
Abstract
Regio- and stereoselective 1,3-dipolar cycloadditions of C-(3-pyridyl)-N-phenylnitrone (2) with variedly substituted dipolarophiles (3, 4) were carried out to obtain substituted pyridyl-isoxazolidines (5-8). Reductive cleavage of pyridyl-isoxazolidines (5-8) with ammonium formate, methanol-THF solvents, at ambient temperature, in the presence of Pd/C provided a facile route for the synthesis of β3 -and β2,3 -amino alcohols (9-12), with a substitution pattern having pronounced influence on torsional angles. The obtained compounds (9-12) are valuable scaffolds which can be utilized for peptidomimetics. Thus, the present methodology for reductive opening of isoxazolidine ring avoids the disadvantages of using expensive apparatus and hazards involved in the use of hydrogen gas. The preferential formation of amino-alcohols in case of bicyclic isoxazolidines (8a-c), which precludes any recyclization is rationalized by DFT calculations.
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Affiliation(s)
- Gagandeep Singh
- Bio-Organic and Photochemistry Laboratory, Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143 005, Punjab, India
| | - Naman Gupta
- Bio-Organic and Photochemistry Laboratory, Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143 005, Punjab, India
| | - Nidhi Sethi
- Bio-Organic and Photochemistry Laboratory, Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143 005, Punjab, India
| | - Vivek Gupta
- Post-Graduate Department of Physics, University of Jammu, Jammu Tawi, 180 006, India
| | - Tilak Raj
- Toxicology Division, Forensic Science Laboratory, Mohali, 160 059, Punjab, India
| | - Mohan Paul Singh Ishar
- Bio-Organic and Photochemistry Laboratory, Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143 005, Punjab, India
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Lukoyanov AA, Tabolin AA, Nelyubina YV, Aksenova SA, Sukhorukov AY. Nitronate-aryne cycloaddition as a concise route to stereochemically complex fused benzisoxazolines and amino alcohols. Org Biomol Chem 2023; 21:3871-3880. [PMID: 37097315 DOI: 10.1039/d3ob00235g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
The reaction of cyclic nitronates (isoxazoline N-oxides and 5,6-dihydro-4H-1,2-oxazine N-oxides) with Kobayashi's aryne precursors affords tricyclic benzene-fused nitroso acetals as a result of [3 + 2]-cycloaddition. The process is regio- and stereoselective in most cases and produces the target cycloadducts possessing up to four contiguous stereogenic centers. These nitroso acetals were shown to be convenient precursors of valuable polysubstituted aminodiols through catalytic hydrogenolysis of the N-O bonds. Also, the action of protic acids resulted in an unusual fragmentation of the cyclic nitroso acetal moiety through heterolytic N-O bond cleavage and Beckmann-type reaction. Using this acid-mediated reaction, the synthesis of a hitherto unknown hexahydrobenzo[4,5]isoxazolo[2,3-a]azepine scaffold was accomplished.
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Affiliation(s)
- Alexander A Lukoyanov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991, Leninsky prospect, 47, Moscow, Russian Federation.
| | - Andrey A Tabolin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991, Leninsky prospect, 47, Moscow, Russian Federation.
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, 119991, Vavilov str. 28, Moscow, Russian Federation
| | - Svetlana A Aksenova
- A. N. Nesmeyanov Institute of Organoelement Compounds, 119991, Vavilov str. 28, Moscow, Russian Federation
- Moscow Institute of Physics and Technology (National Research University), 141700, Institutskiy per. 9, Dolgoprudny, Moscow Region, Russian Federation
| | - Alexey Yu Sukhorukov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991, Leninsky prospect, 47, Moscow, Russian Federation.
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Exploring the possible mechanism involved in the anti-nociceptive effect of β-sitosterol: modulation of oxidative stress, nitric oxide and IL-6. Inflammopharmacology 2023; 31:517-527. [PMID: 36574096 DOI: 10.1007/s10787-022-01122-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 11/25/2022] [Indexed: 12/28/2022]
Abstract
Β-sitosterol is a phytosterol, documented to possess various activities including protection against inflammation, diabetes and Alzheimer's disease. The current investigation was designed to explore the analgesic potential of β-sitosterol and the possible molecular mechanism involved in the observed effect. β-sitosterol was administered at varying doses of 10, 20, and 40 mg/kg before subjecting the mice to acetic acid and formalin challenges. The number of writhings in acetic acid and the number of flinchings and foot tappings were quantified in the formalin test. For mechanistic studies, substance P (cyclooxygenase-2 (COX-2) stimulator) and L-Nitro arginine methyl ester (L-NAME) (nitric oxide synthetases (NOS) inhibitor) and L-arginine (nitric oxide precursor) were administered before β-sitosterol treatment. β-sitosterol (10, 20, 40 mg/kg) treatment significantly reduced acetic acid-induced writhings and ameliorated the formalin-induced inflammatory phase dose-dependently. Whereas, 40 mg/kg dose of β-sitosterol abrogated the formalin-induced neurogenic phase. Substance-P abrogated the effect of β-sitosterol in both neurogenic and inflammatory phases. Whereas, L-arginine only abrogated the inflammatory phase. In biochemical analysis, β-sitosterol treatment reduced the level of interleukin-6 (IL-6), thiobarbituric acid reactive substances (TBARS) and increased the level of reduced glutathione (GSH). Furthermore, L-arginine and substance-P abrogated the GSH increasing and TBARS lowering effect of β-sitosterol (40 mg/kg). Overall, the current study delineated that β-sitosterol may induce an anti-nociceptive effect via inhibiting the IL-6, oxidative stress, cyclo-oxygenase and nitric oxide.
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Paliwal D, Srivastava S, Sharma PK, Ahmad I. Marine Originated Fused Heterocyclic: Prospective Bioactivity against Cancer. CURRENT TRADITIONAL MEDICINE 2021. [DOI: 10.2174/2215083805666190328205729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The deep Sea has several herbal sources such as marine organisms. These marine
sources possibly have effective anticancer properties. The fused heterocyclic ring with marine
source has special characteristics with minimum toxicity and with maximum anticancer
effects. The review focused on and classified the prospective lead compounds which have
shown a promising therapeutic range as anticancer agents in clinical and preclinical trials.
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Affiliation(s)
- Deepika Paliwal
- Department of Pharmacy, School of Medical & Allied Sciences, Galgotias University, Greater Noida, 201310, India
| | - Saurabh Srivastava
- Department of Oral & Maxillofacial Surgery, King George’s Medical University, Lucknow, UP 226003, India
| | - Pramod Kumar Sharma
- Department of Pharmacy, School of Medical & Allied Sciences, Galgotias University, Greater Noida, 201310, India
| | - Irfan Ahmad
- Department of Clinical Laboratory Science, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
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Cycloaddition of nitrones to 1,3-diarylpropenones and subsequent transformations of the resulting isoxazolidines. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02797-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Abstract
This paper is the fortieth consecutive installment of the annual anthological review of research concerning the endogenous opioid system, summarizing articles published during 2017 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides and receptors as well as effects of opioid/opiate agonists and antagonists. The review is subdivided into the following specific topics: molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors (1), the roles of these opioid peptides and receptors in pain and analgesia in animals (2) and humans (3), opioid-sensitive and opioid-insensitive effects of nonopioid analgesics (4), opioid peptide and receptor involvement in tolerance and dependence (5), stress and social status (6), learning and memory (7), eating and drinking (8), drug abuse and alcohol (9), sexual activity and hormones, pregnancy, development and endocrinology (10), mental illness and mood (11), seizures and neurologic disorders (12), electrical-related activity and neurophysiology (13), general activity and locomotion (14), gastrointestinal, renal and hepatic functions (15), cardiovascular responses (16), respiration and thermoregulation (17), and immunological responses (18).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, CUNY, 65-30 Kissena Blvd., Flushing, NY, 11367, United States.
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Huang T, Wang Q, Kong D, Wu M. Diastereoselective catalyst-free construction of isoxazolidine-cis-fused phospha dihydrocoumarins via an intramolecular Nitrone–Vinylphosphonate dipolar cycloaddition. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Teterina PS, Efremova MM, Sirotkina EV, Novikov AS, Khoroshilova OV, Molchanov AP. A highly efficient and stereoselective cycloaddition of nitrones to N-arylitaconimides. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151063] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Chandel P, Kumar A, Singla N, Kumar A, Singh G, Gill RK. Rationally synthesized coumarin based pyrazolines ameliorate carrageenan induced inflammation through COX-2/pro-inflammatory cytokine inhibition. MEDCHEMCOMM 2019; 10:421-430. [PMID: 30996860 PMCID: PMC6430084 DOI: 10.1039/c8md00457a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 01/22/2019] [Indexed: 12/28/2022]
Abstract
In the present work, coumarin based pyrazolines (7a-g) have been synthesized and investigated for their in vitro and in vivo anti-inflammatory potential. Amongst the synthesized compounds, compounds 7a, 7d and 7f exhibited significant in vitro anti-inflammatory activity as compared to the standard etoricoxib. Keeping this in mind, in vivo investigations were carried out via carrageenan induced inflammation and acetic acid induced writhing models in male Wistar rats and compound 7a was found to possess appreciable anti-inflammatory and analgesic potential. The mode of action of compound 7a was also investigated by using substance P as the biomarker, which shows promising results. Further, the selectivity of the most active compound 7a against the cyclooxygenase enzyme was supported by molecular docking studies which reveal that compound 7a has greater binding affinity towards COX-2 over COX-1 and 5-LOX enzymes. In silico ADME analysis of compound 7a confirms the drug-like characteristics and the in vivo acute toxicity study showed the safety of the compound even up to a 2000 mg kg-1 dose. Thus, compound 7a was identified as an effective anti-inflammatory agent, and can be explored for further analgesic/anti-inflammatory drug design and development.
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Affiliation(s)
- Priyanka Chandel
- Department of Pharmaceutical Chemistry , ISF College of Pharmacy , Moga-142001 , Punjab , India . ; ; Tel: +91 1636 324200
| | - Anoop Kumar
- Department of Pharmacology , ISF College of Pharmacy , Moga-142001 , Punjab , India
| | - Nishu Singla
- Department of Pharmaceutical Chemistry , ISF College of Pharmacy , Moga-142001 , Punjab , India . ; ; Tel: +91 1636 324200
| | - Anshul Kumar
- Department of Pharmaceutical Chemistry , ISF College of Pharmacy , Moga-142001 , Punjab , India . ; ; Tel: +91 1636 324200
| | - Gagandeep Singh
- Department of Chemistry , Indian Institute of Technology-Ropar-140001 , Punjab , India .
| | - Rupinder Kaur Gill
- Department of Pharmaceutical Chemistry , ISF College of Pharmacy , Moga-142001 , Punjab , India . ; ; Tel: +91 1636 324200
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Singh G, Gupta N, Gupta V, Ishar MPS. Reduction of chromano–piperidine-fused isoxazolidines: Tandem intramolecular rearrangements leading to 2-(methylamino)-4-oxo- N -phenyl- N -propyl-4 H -chromene-3-carboxamide. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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