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Hossain K, Roy Choudhury A, Majumdar A. Generation and Reactivity of Polychalcogenide Chains in Binuclear Cobalt(II) Complexes. JACS Au 2024; 4:771-787. [PMID: 38425921 PMCID: PMC10900221 DOI: 10.1021/jacsau.3c00790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 03/02/2024]
Abstract
A series of six binuclear Co(II)-thiolate complexes, [Co2(BPMP)(S-C6H4-o-X)2]1+ (X = OMe, 2; NH2, 3), [Co2(BPMP)(μ-S-C6H4-o-O)]1+ (4), and [Co2(BPMP)(μ-Y)]1+ (Y = bdt, 5; tdt, 6; mnt, 7), has been synthesized from [Co2(BPMP)(MeOH)2(Cl)2]1+ (1a) and [Co2(BPMP)(Cl)2]1+ (1b), where BPMP1- is the anion of 2,6-bis[[bis(2-pyridylmethyl)amino]methyl]-4-methylphenol. While 2 and 3 could allow the two-electron redox reaction of the two coordinated thiolates with elemental sulfur (S8) to generate [Co2(BPMP)(μ-S5)]1+ (8), the complexes, 4-7, could not undergo a similar reaction. An analogous redox reaction of 2 with elemental selenium ([Se]) produced [{Co2(BPMP)(μ-Se4)}{Co2(BPMP)(μ-Se3)}]2+ (9a) and [Co2(BPMP)(μ-Se4)]1+ (9b). Further reaction of these polychalcogenido complexes, 8 and 9a/9b, with PPh3 allowed the isolation of [Co2(BPMP)(μ-S)]1+ (10) and [Co2(BPMP)(μ-Se2)]1+ (11), which, in turn, could be converted back to 8 and 9a upon treatment with S8 and [Se], respectively. Interestingly, while the redox reaction of the polyselenide chains in 9a and 11 with S8 produced 8 and [Se], the treatment of 8 with [Se] gave back only the starting material (8), thus demonstrating the different redox behavior of sulfur and selenium. Furthermore, the reaction of 8 and 9a/9b with activated alkynes and cyanide (CN-) allowed the isolation of the complexes, [Co2(BPMP)(μ-E2C2(CO2R)2)]1+ (E = S: 12a, R = Me; 12b, R = Et; E = Se: 13a, R = Me; 13b, R = Et) and [Co2(BPMP)(μ-SH)(NCS)2] (14), respectively. The present work, thus, provides an interesting synthetic strategy, interconversions, and detailed comparative reactivity of binuclear Co(II)-polychalcogenido complexes.
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Affiliation(s)
- Kamal Hossain
- School
of Chemical Sciences, Indian Association
for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, West Bengal 700032, India
| | - Angshuman Roy Choudhury
- Department
of Chemical Sciences, Indian
Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli P.O., Mohali, Punjab 140306, India
| | - Amit Majumdar
- School
of Chemical Sciences, Indian Association
for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata, West Bengal 700032, India
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Rokkam SK, Mas-Rosario JA, Joshi BP, Joshi M, Choudhury AR, Kar S, Golakoti NR, Farkas ME. Diarylidene-N-Methyl-4-Piperidones and Spirobibenzopyrans as Antioxidant and Anti-Inflammatory Agents. Chem Biodivers 2023; 20:e202300822. [PMID: 37537138 PMCID: PMC10634312 DOI: 10.1002/cbdv.202300822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/28/2023] [Accepted: 08/02/2023] [Indexed: 08/05/2023]
Abstract
Curcumin has antioxidant properties resulting from its radical scavenging ability and inhibition of inflammation-associated factors. However, its lack of solubility, instability, and poor bioavailability are impediments to its therapeutic use. As potential alternatives, we synthesized and performed chemical analysis of thirty diarylidene-N-methyl-4-piperidone (DANMP), diheteroarylidene-N-methyl-4-piperidone (DHANMP), and spirobibenzopyran (SBP) derivatives, one of which was also characterized by single crystal X-ray diffraction. All compounds were evaluated for antioxidant activity via 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay and for drug-like properties in silico. A subset of five compounds was investigated in terms of aqueous solubilities, which were significantly improved compared to that of curcumin. In vitro assessments of cellular and anti-inflammatory effects were conducted via real time polymerase chain reaction (RT-PCR) and Griess assays to evaluate the presence of inflammatory/activated (M1) markers and production of nitric oxide (NO) species, which are associated with inflammation. The five compounds reduced levels of markers and NO to extents similar to or better than curcumin in inflamed cells, and showed no adverse effects on cell viability. We show that these compounds possess anti-inflammatory properties and may be used as curcumin-substitutes with improved characteristics.
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Affiliation(s)
- Siva Kumar Rokkam
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam 515134(AP), India
| | - Javier A. Mas-Rosario
- Molecular & Cellular Biology Graduate Program, University of Massachusetts Amherst, 230 Stockbridge Rd, Amherst, MA 01003, USA
| | - Bishnu P. Joshi
- Department of Chemistry, University of Massachusetts Amherst, 710 N. Pleasant St., Amherst, MA 01003 USA
| | - Mayank Joshi
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S. A. S. Nagar, Knowledge City, Manauli P. O. Mohali, Punjab, 140306, India
- College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana, 133207, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S. A. S. Nagar, Knowledge City, Manauli P. O. Mohali, Punjab, 140306, India
| | - Swayamsiddha Kar
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam 515134(AP), India
| | - Nageswara Rao Golakoti
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam 515134(AP), India
| | - Michelle E. Farkas
- Molecular & Cellular Biology Graduate Program, University of Massachusetts Amherst, 230 Stockbridge Rd, Amherst, MA 01003, USA
- Department of Chemistry, University of Massachusetts Amherst, 710 N. Pleasant St., Amherst, MA 01003 USA
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Moorthy H, Yadav M, Tamang N, Mavileti SK, Singla L, Choudhury AR, Sahal D, Golakoti NR. Antiplasmodial and Antimalarial Activity of 3,5-Diarylidenetetrahydro-2H-pyran-4(3H)-ones via Inhibition of Plasmodium falciparum Pyridoxal Synthase. ChemMedChem 2023; 18:e202200411. [PMID: 36251345 DOI: 10.1002/cmdc.202200411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 10/13/2022] [Indexed: 01/24/2023]
Abstract
A series of 22 different 3,5-diarylidenetetrahydro-2H-pyran-4(3H)-ones (DATPs) were synthesized, characterized, and screened for their in vitro antiplasmodial activities against chloroquine (CQ)-sensitive Pf3D7, CQ-resistant PfINDO, and artemisinin-resistant PfMRA-1240 strains of Plasmodium falciparum. DATP 19 (3,5-bis(4-hydroxy-3,5-dimethoxybenzylidene)tetrahydro-2H-pyran-4(3H)-one) was found to be the most potent (IC50 1.07 μM) against PfMRA-1240, whereas 21 (3,5-bis(3,4,5-trimethoxybenzylidene)tetrahydro-2H-pyran-4(3H)-one) showed IC50 values of 1.72 and 1.44 μM against Pf3D7 and PfINDO, respectively. Resistance indices (RI) as low as 0.2 to 0.5 for 10 (3,5-bis(4-nitrobenzylidene)tetrahydro-2H-pyran-4(3H)-one) and 20 (3,5-bis(3-nitrobenzylidene)tetrahydro-2H-pyran-4(3H)-one), and <1 for most other DATPs reveals their greater potency against resistant strains than the sensitive one. The single-crystal XRD data for DATP 21 are reported. In silico support was obtained through docking studies. Killing all three strains within 4-8 h, these DATPs showed rapid kill kinetics toward the trophozoite stage. Furthermore, DATP 18 (3,5-bis(quinolin-4-ylmethylene)tetrahydro-2H-pyran-4(3H)-one) inhibited PfPdx1 enzyme activity with IC50 20.34 μM, which is about twofold lower than that (IC50 43 μM) for an already known inhibitor 4PEHz. At an oral dose of 300 mg/kg body weight, DATPs 19 and 21 were found to be nontoxic to mice, and at 100 mg/kg body weight, DATP 19 was found to suppress parasitaemia, which led to an increase in median survival time by three days relative to untreated control mice in a malaria curative study.
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Affiliation(s)
- Hariharan Moorthy
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, Andhra Pradesh, 515134, India
| | - Mamta Yadav
- Malaria Drug Discovery Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, 110067, India
| | - Nitesh Tamang
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, Andhra Pradesh, 515134, India
| | - Sai Kiran Mavileti
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, Andhra Pradesh, 515134, India
| | - Labhini Singla
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli P.O., Mohali, Punjab, 140306, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, S. A. S. Nagar, Manauli P.O., Mohali, Punjab, 140306, India
| | - Dinkar Sahal
- Malaria Drug Discovery Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, 110067, India
| | - Nageswara Rao Golakoti
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Puttaparthi, Andhra Pradesh, 515134, India
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Diyali S, Manna M, Mahato S, Kumar V, Roy Choudhury A, Biswas B, Bhandari S. Hybrid Lead Bromide Perovskite Single Crystals Coupled with a Zinc(II) Complex for White Light Emission. J Phys Chem Lett 2022; 13:10759-10766. [PMID: 36374525 DOI: 10.1021/acs.jpclett.2c02876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Herein we report the fabrication of green emitting hybrid lead bromide perovskite single crystals (HLBPSCs), their anion exchange mediated tunable yellow luminescence and thereby their coupling ability with blue emitting inorganic complex leading to generation of a photostable white light emission, with properties close to bright day sunlight. The partial anion exchange reaction to green emitting HLBPSCs led to formation of yellow emitting anion exchanged HLBPSCs─which are termed as AE-HLBPSCs herein. Then, AE-HLBPSCs were chemically combined with blue emitting Zn-aspirin complex to produce white light with a photoluminescence quantum yield (PLQY) of 47.7%. The solid form of the white light emitting (WLE) composite (followed by coating with poly methyl methacrylate─PMMA) showed color coordinates of (0.34, 0.33), color rendering index of 76 and correlated color temperature of 5282 K. Furthermore, the PMMA coated inorganic complex coupled AE-HLBPSCs showed the preservation of their WLE nature and luminescence stability in their solid form.
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Affiliation(s)
- Sangharaj Diyali
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal 734013, India
| | - Mihir Manna
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Shreya Mahato
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal 734013, India
| | - Vierandra Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO, Mohali, Punjab 140306, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO, Mohali, Punjab 140306, India
| | - Bhaskar Biswas
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal 734013, India
| | - Satyapriya Bhandari
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal 734013, India
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Khatun A, Fazili MR, Malik AA, Naikoo M, Choudhury AR, Shah S, Lone FA, Qureshi S, Hussain I. Can honey improve the quality of cryopreserved cross bred ram semen added to tris egg yolk extender? Cryo Letters 2022; 43:334-340. [PMID: 36629828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Honey can improve the quality of cryopreserved ram semen because of its multinutrient and cryoprotective nature added to standard tris egg yolk extender. OBJECTIVE Different concentrations of honey were added to the standard tris egg yolk extender to improve the post-thaw quality of crossbred ram semen. METHOD Thirty six (36) ejaculates from eight healthy cross bred rams were pooled and divided into four aliquots. Standard tris egg yolk extender without any alteration acted as Control (C) and was supplemented with different concentrations of honey, viz. T1 (honey 1.5%), T2 (2.5%), and T3 (3.5%). RESULTS The percent (mean ± S.E.M) sperm motility at pre-freeze was significantly (P < 0.05) higher in Group T2 and at post-thaw in Group T3 in comparison to T1 and C treatment groups. The percent (mean ± S.E.M) HOST reacted spermatozoa at post-thaw was significantly (P < 0.05) higher in Group C and at pre-freeze the value was significantly (P < 0.05) higher in the same treatment group than Group T1. The mean MDA level (mean ± S.E.M) at post thaw was significantly (P < 0.05) lower in Group T3 than the treatment groups C and Group T1. CONCLUSION From this study it is concluded that the addition of 3.5% honey to the standard tris egg yolk extender provides better protection to ram semen than the addition of 1.5% honey (i.e., Control). doi.org/10.54680/fr22610110212.
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Affiliation(s)
- A Khatun
- Division of Animal Reproduction, Gynaecology and Obstetrics, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Srinagar - 190006, J and K, India.
| | - M R Fazili
- Division of Veterinary Anatomy and Histology; Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Srinagar - 190006, J and K, India
| | - A A Malik
- Division of Animal Reproduction, Gynaecology and Obstetrics, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Srinagar - 190006, J and K, India
| | - M Naikoo
- Division of Animal Reproduction, Gynaecology and Obstetrics, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Srinagar - 190006, J and K, India
| | - A R Choudhury
- Division of Veterinary Anatomy and Histology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Srinagar - 190006, J and K, India
| | - S Shah
- Frozen Semen Station, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Srinagar - 190006, J and K, India
| | - F A Lone
- Division of Animal Reproduction, Gynaecology and Obstetrics, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Srinagar - 190006, J and K, India
| | - S Qureshi
- Division of Veterinary Microbiology and Immunology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Srinagar - 190006, J and K, India
| | - I Hussain
- Division of Veterinary Microbiology and Immunology, Faculty of Veterinary Sciences and Animal Husbandry, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Srinagar - 190006, J and K, India
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Thakur SK, Kaur M, Manar KK, Adhikari M, Choudhury AR, Singh S. Well‐Defined Ni(0) and Ni(II) Complexes of Bicyclic (Alkyl)(Amino)Carbene (
Me
BICAAC): Catalytic Activity and Mechanistic Insights in Negishi Cross‐Coupling Reaction. Chemistry 2022; 28:e202202237. [DOI: 10.1002/chem.202202237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Sandeep Kumar Thakur
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar 140306 Mohali Punjab India
| | - Mandeep Kaur
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar 140306 Mohali Punjab India
| | - Krishna Kumar Manar
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar 140306 Mohali Punjab India
| | - Manu Adhikari
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar 140306 Mohali Punjab India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar 140306 Mohali Punjab India
| | - Sanjay Singh
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Knowledge City, Sector 81, SAS Nagar 140306 Mohali Punjab India
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Kumar G, Das C, Acharya A, Bhal S, Joshi M, Kundu CN, Choudhury AR, Guchhait SK. Organocatalyzed umpolung addition for synthesis of heterocyclic-fused arylidene-imidazolones as anticancer agents. Bioorg Med Chem 2022; 67:116835. [PMID: 35617791 DOI: 10.1016/j.bmc.2022.116835] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/16/2022] [Accepted: 05/16/2022] [Indexed: 11/18/2022]
Abstract
A strategy of "Nature-to-new" with iterative scaffold-hopping was considered for investigation of privileged ring/functional motif-elaborated analogs of natural aurones. An organocatalyzed umpolung chemistry based method was established for molecular-diversity feasible synthesis of title class of chemotypes i.e. (Z)-2-Arylideneimidazo[1,2-a]pyridinones and (Z)-2-Arylidenebenzo[d]imidazo[2,1-b]thiazol-3-ones. Various biophysical experiments indicated their important biological properties. The analogs showed characteristic anticancer activities with efficiency more than an anticancer drug. The compounds induced apoptosis with arrest in the S phase of the cell cycle regulation. The compounds' significant effect in up/down-regulation of various apoptotic proteins, an apoptosis cascade, and the inhibition of topoisomerases-mediated DNA relaxation process was identified. The analysis of the structure-activity relationship, interference with biological events and the drug-likeness physicochemical properties of the compounds in the acceptable window indicated distinctive medicinal molecule-to-properties of the investigated chemotypes.
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Affiliation(s)
- Gulshan Kumar
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Mohali, Punjab 160062, India
| | - Chinmay Das
- School of Biotechnology, KIIT University, Campus-11, Patia, Bhubaneswar, Orissa 751024, India
| | - Ayan Acharya
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Mohali, Punjab 160062, India
| | - Subhasmita Bhal
- School of Biotechnology, KIIT University, Campus-11, Patia, Bhubaneswar, Orissa 751024, India
| | - Mayank Joshi
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Mohali, Punjab 140306, India
| | - Chanakya Nath Kundu
- School of Biotechnology, KIIT University, Campus-11, Patia, Bhubaneswar, Orissa 751024, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Mohali, Punjab 140306, India
| | - Sankar K Guchhait
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Mohali, Punjab 160062, India.
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Mahato S, Rawal P, Devadkar AK, Joshi M, Roy Choudhury A, Biswas B, Gupta P, Panda TK. Hydroboration and reductive amination of ketones and aldehydes with HBpin by a bench stable Pd(II)-catalyst. Org Biomol Chem 2022; 20:1103-1111. [PMID: 35029621 DOI: 10.1039/d1ob02339j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A palladium(II) complex [(κ4-{1,2-C6H4(NCH-C6H4O)2}Pd] (1) supported by a dianionic salen ligand [1,2-C6H4(NCH-C6H4O)2]2- (L) was synthesised and used as a molecular pre-catalyst in the hydroboration of aldehydes and ketones. The molecular structure of Pd(II) complex 1 was established by single-crystal X-ray diffraction analysis. Complex 1 was tested as a competent pre-catalyst in the hydroboration of aldehydes and ketones with pinacolborane (HBpin) to produce corresponding boronate esters in excellent yields at ambient temperature under solvent-free conditions. Further, the complex 1 proved to be a competent catalyst in the reductive amination of aldehydes with HBpin and primary amines under mild and solvent-free conditions to afford a high yield (up to 97%) of corresponding secondary amines. Both protocols provided high conversion, superior selectivity and broad substrate scope, from electron-withdrawing to electron-donating and heterocyclic substitutions. A computational study based on density functional theory (DFT) revealed a reaction mechanism for Pd-catalysed hydroboration of carbonyl species in the presence of HBpin. The protocols also uncovered the dual role of HBpin in achieving the hydroboration reaction.
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Affiliation(s)
- Shreya Mahato
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India.
| | - Parveen Rawal
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Ajitrao Kisan Devadkar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
| | - Mayank Joshi
- Department of Chemical Sciences, IISER Mohali, Punjab, India
| | | | - Bhaskar Biswas
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India.
| | - Puneet Gupta
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, Telangana, India.
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Kundu S, Saha S, Das A, Singla L, Roy Choudhury A, Biswas B. Methyl group: A potential building block for edge-to-face interlocking of benzimidazole scaffolds in developing blue light emitting molecular aggregates. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118340] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Mahato S, Mondal A, Das M, Joshi M, Ray PP, Roy Choudhury A, Reddy CM, Biswas B. De novo synthesis of hybrid d-f block metal complex salts for electronic charge transport applications. Dalton Trans 2022; 51:1561-1570. [PMID: 34989731 DOI: 10.1039/d1dt02722k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The advent of d-d type complex salts for designing smart functional materials with versatile utility inspired us to develop a novel type of M(II)-Ce(IV) complex salts [M(II) = Cu and Zn ions]. In this study, we present for the first time a holistic approach to design and prepare metal complex salts of the novel hybrid d-f block type, [Cu(bpy)2]2[Ce(NO3)6]2 (1), [Cu(phen)2(NO3)]2[Ce(NO3)6](HNO3) (2), [Zn(bpy)2(NO3)][ClO4] (3), and [Zn(phen)2(NO3)]2 [Ce(NO3)6] (4); [bpy = 2,2'-bipyridine; phen = 1,10-phenanthroline]. The intrinsic structural and morphological properties of the compounds have been revealed by employing a suite of analytical and spectroscopic methods. X-ray structural analysis reveals that the copper(II) centres in the cationic complex units of 1 and 2 adopt a highly distorted tetrahedral and a rare bicapped square pyramidal coordination geometry, respectively. The zinc(II) ions in both 3 and 4 adopt the rare bicapped square pyramidal geometry while the cerium(IV) ions in 1, 2 and 4 exist in a dodecahedral geometry. Investigation of supramolecular interactions reveals that intermolecular O⋯H and O⋯π short contacts bind the complex units in 1, while predominant π⋯π interactions, along with O⋯H and O⋯π short contacts, produce the binding force among the complex units in 2. We further employed the complex salts (1-4) to construct Schottky devices to reveal the role of these new complex salts in the charge-transport phenomenon. The carrier mobilities (μ) for salts 1-4 were determined to be 1.76 × 10-6, 9.02 × 10-6, 1.86 × 10-8, and 4.31 × 10-8 m2 V-1 s-1, with respective transit times (τ) of 439, 85, 4.17 × 103, and 1.79 × 103 ns, which suggest that complex salt 2 is the best candidate with the highest transport properties among all the complex salts. A crystal engineering perspective sheds light on the charge-transport properties of the complex salts, emphasizing the attribution of the best performance of 2 to its predominant π⋯π interactions. The synthesis of this new type of complex salts, their physicochemical properties and their charge-transport applications envisage great promise for the development of novel crystalline materials with smart functionalities.
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Affiliation(s)
- Shreya Mahato
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
| | - Amit Mondal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia 741246, India
| | - Mainak Das
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Mayank Joshi
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO, Mohali, Punjab 140306, India
| | | | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO, Mohali, Punjab 140306, India
| | - C Malla Reddy
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia 741246, India
| | - Bhaskar Biswas
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
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11
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Tomar R, Suwasia S, Choudhury AR, Venkataramani S, Babu SA. Azobenzene-based unnatural amino acid scaffolds via a Pd( ii)-catalyzed C(sp 3)–H arylation strategy. Chem Commun (Camb) 2022; 58:12967-12970. [DOI: 10.1039/d2cc04870a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Azobenzene-based unnatural amino acid motifs were constructed via the Pd(ii)-catalyzed diastereoselective β-C(sp3)–H arylation and Mills azo coupling tactics.
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Affiliation(s)
- Radha Tomar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli P.O. 140306, Mohali, Punjab, India
| | - Sonam Suwasia
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli P.O. 140306, Mohali, Punjab, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli P.O. 140306, Mohali, Punjab, India
| | - Sugumar Venkataramani
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli P.O. 140306, Mohali, Punjab, India
| | - Srinivasarao Arulananda Babu
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli P.O. 140306, Mohali, Punjab, India
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12
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Navale G, Singh S, Agrawal S, Ghosh C, Roy Choudhury A, Roy P, Sarkar D, Ghosh K. DNA binding, antitubercular, antibacterial and anticancer studies of newly designed piano-stool ruthenium( ii) complexes. Dalton Trans 2022; 51:16371-16382. [DOI: 10.1039/d2dt02577a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chemotherapeutic potential of ruthenium(ii) complexes as DNA binding, antitubercular, antibacterial, and anticancer agents.
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Affiliation(s)
- Govinda Navale
- Department of Chemistry, Indian Institute of Technology, Roorkee 247667, India
| | - Sain Singh
- Department of Chemistry, Indian Institute of Technology, Roorkee 247667, India
| | - Sonia Agrawal
- Department of Organic Chemistry, CSIR-National Chemical Laboratory, Pune 411 008, India
| | - Chandrachur Ghosh
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Roorkee 247667, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, India
| | - Partha Roy
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Roorkee 247667, India
| | - Dhiman Sarkar
- Department of Organic Chemistry, CSIR-National Chemical Laboratory, Pune 411 008, India
| | - Kaushik Ghosh
- Department of Chemistry, Indian Institute of Technology, Roorkee 247667, India
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Roorkee 247667, India
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13
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Mukherjee S, Pal CK, Kotakonda M, Joshi M, Shit M, Ghosh P, Choudhury AR, Biswas B. Solvent induced distortion in a square planar copper(II) complex containing an azo-functionalized Schiff base: Synthesis, crystal structure, in-vitro fungicidal and anti-proliferative, and catecholase activity. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Thekkeppat NP, Singla L, Tothadi S, Das P, Choudhury AR, Ghosh S. Structure-property correlation of halogen substituted benzothiazole crystals. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Mahato RK, Das S, Joshi M, Choudhury AR, Misra A, Biswas B. Biomimics of phenazine oxidase activity of a cobalt (III)‐dipyridylamine complex: Spectroscopic, structural, and computational studies
†. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Soumik Das
- Department of Chemistry University of North Bengal Darjeeling India
| | - Mayank Joshi
- Department of Chemical Sciences Indian Institute of Science Education and Research (IISER) Mohali India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences Indian Institute of Science Education and Research (IISER) Mohali India
| | - Anirban Misra
- Department of Chemistry University of North Bengal Darjeeling India
| | - Bhaskar Biswas
- Department of Chemistry University of North Bengal Darjeeling India
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16
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Choudhury AR, Karanam M, Joshi M, Verma I, Gulati A, Budhwar C, Rani S, Bhalla A, Garg P, Mukhopadhyay A, Raza K, Sagarika D. Pharmaceutical cocrystallization: polymorphs, salts and co-crystals. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s0108767321088206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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17
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Joshi M, Verma I, Gulati A, Rani S, Budhwar C, Raza K, Mukhopadhaya A, Choudhury AR. New salts of levofloxacin with physiochemical, structural and biological insights. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s0108767321088218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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18
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De J, Yadav RAK, Yadav RS, Gupta SP, Joshi M, Roy Choudhury A, Jayakumar J, Jou JH, Cheng CH, Pal SK. Molecular Engineering for the Development of a Discotic Nematic Mesophase and Solid-State Emitter in Deep-Blue OLEDs. J Org Chem 2021; 86:7256-7262. [PMID: 33955757 DOI: 10.1021/acs.joc.1c00742] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A unique strategy for the attainment of a discotic nematic (ND) mesophase is reported consisting of a central benzene core to which are attached two 4-alkylphenyl and two 4-pentylbiphenyl moieties diagonally via alkynyl linkers. The rotational nature and incompatibility of unequal phenylethynyl units led to the disruption of π-π interactions within cores that aids to the realization of ND phase and favors high solid-state emission. When used in OLEDs, compounds act as an efficient solid-state pure deep-blue emitter with Commission Internationale de L'Eclairage (CIEx,y) coordinates of (0.16, 0.07).
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Affiliation(s)
- Joydip De
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, SAS Nagar, Knowledge City, Manauli 140306, India
| | | | - Rahul Singh Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, SAS Nagar, Knowledge City, Manauli 140306, India
| | | | - Mayank Joshi
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, SAS Nagar, Knowledge City, Manauli 140306, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, SAS Nagar, Knowledge City, Manauli 140306, India
| | | | | | | | - Santanu Kumar Pal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, SAS Nagar, Knowledge City, Manauli 140306, India
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19
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Roy S, Paul P, Karar M, Joshi M, Paul S, Choudhury AR, Biswas B. Cascade detection of fluoride and bisulphate ions by newly developed hydrazine functionalised Schiff bases. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115293] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Khatun A, Fazili MR, Malik AA, Shah RA, Khan HM, Choudhury AR, Naikoo M, Lone FA, Malik A. In vitro Assessment of Tris Egg Yolk and Soybean Lecithin Based Extenders for Cryopreservation of Crossbred Ram Semen. Cryo Letters 2021; 42:73-80. [PMID: 33970983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
BACKGROUND The replacement of egg yolk with alternative plant-derived soybean lecithin is gaining interest in both animal and human sperm cryopreservation owing to biosecurity issues with egg yolk based extenders. OBJECTIVE To evaluate the comparative effect of egg yolk and soyabean lecithin based extenders on the quality of cryopreserved crossbred ram semen. METHODS Pooled ejaculates (total ejaculates = 36) were divided into two aliquots and extended with Tris egg yolk extender (Tris extender) and soybean lecithin based commercial extender (Ovixcell) RESULTS: Among the two extenders, Ovixcell showed better sperm quality both at the pre-freeze (Sperm motility) and post-thaw stages. Lower malondialdehyde (MDA) level (nmol/mL) was observed in Ovixcell as compared to Tris extender. Both sperm quality and MDA level decreased significantly (P < 0.05) from pre-freeze to post-thaw in both the extenders. CONCLUSION The findings of the present study indicate that Ovixcell is a comparable alternative to Tris extender for the cryopreservation of crossbred ram semen.
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Affiliation(s)
- A Khatun
- Division of Animal Reproduction, Gynaecology and Obstetrics, Faculty of Veterinary Sciences and Animal Husbandry, Shere-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Jammu and Kashmir, India.
| | - M R Fazili
- Division of Veterinary Clinical Complex, Faculty of Veterinary Sciences and Animal Husbandry, Shere-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Jammu and Kashmir, India
| | - A A Malik
- Division of Animal Reproduction, Gynaecology and Obstetrics,Faculty of Veterinary Sciences and Animal Husbandry, Shere-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Jammu and Kashmir, India
| | - R A Shah
- Division of Animal Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, Shere-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Jammu and Kashmir, India
| | - H M Khan
- Mountain Research Centre for Sheep and Goats (MRCSG), Faculty of Veterinary Sciences and Animal Husbandry, Shere-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Jammu and Kashmir, India
| | - A R Choudhury
- Division of Veterinary Anatomy and Histology, Faculty of Veterinary Sciences and Animal Husbandry, Shere-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Jammu and Kashmir, India
| | - M Naikoo
- Division of Animal Reproduction, Gynaecology and Obstetrics, Faculty of Veterinary Sciences and Animal Husbandry, Shere-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Jammu and Kashmir, India
| | - F A Lone
- Division of Animal Reproduction, Gynaecology and Obstetrics, Faculty of Veterinary Sciences and Animal Husbandry, Shere-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Jammu and Kashmir, India
| | - A Malik
- Division of Animal Biotechnology, Faculty of Veterinary Sciences and Animal Husbandry, Shere-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, Shuhama, Alusteng, Jammu and Kashmir, India
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21
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Mudi PK, Mahato RK, Joshi M, Shit M, Choudhury AR, Das HS, Biswas B. Copper(II) complexes with a benzimidazole functionalized Schiff base: Synthesis, crystal structures, and role of ancillary ions in phenoxazinone synthase activity. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6211] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Mayank Joshi
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Punjab India
| | - Madhusudan Shit
- Department of Chemistry Dinobandhu Andrews College Kolkata India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Punjab India
| | - Hari Sankar Das
- Department of Chemistry University of North Bengal Darjeeling India
| | - Bhaskar Biswas
- Department of Chemistry University of North Bengal Darjeeling India
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22
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Bandopadhyay N, Joshi M, Armaković S, Armaković SJ, Das HS, Roy Choudhury A, Biswas B. Unprecedented copper( ii) coordination induced nucleophilic cleavage of a quinoxaline heterocycle: structural and computational studies. CrystEngComm 2021. [DOI: 10.1039/d1ce00569c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This research work deals with the unprecedented copper(ii) induced nucleophilic cleavage of a quinoxaline heterocycle with spectroscopic, structural and computational studies.
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Affiliation(s)
| | - Mayank Joshi
- Department of Chemical Sciences
- Indian Institute of Science Education and Research, Mohali
- Mohali
- India
| | - Stevan Armaković
- Faculty of Sciences
- Department of Physics
- University of Novi Sad
- Novi Sad
- Serbia
| | - Sanja J. Armaković
- Faculty of Sciences
- Department of Chemistry, Biochemistry and Environmental Protection
- University of Novi Sad
- Novi Sad
- Serbia
| | - Hari Sankar Das
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences
- Indian Institute of Science Education and Research, Mohali
- Mohali
- India
| | - Bhaskar Biswas
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
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23
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Rokkam SK, Yadav M, Joshi M, Choudhury AR, Sahal D, Golakoti NR. Synthesis, in vitro anti-plasmodial potency, in-silico-cum-SPR binding with inhibition of PfPyridoxal synthase and rapid parasiticidal action by 3,5-bis{( E) arylidene}- N-methyl-4-piperidones. NEW J CHEM 2021. [DOI: 10.1039/d1nj04604g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
DANMPs have been identified as new pharmacophores that have the ability to target PfPyridoxal synthase and cause rapid killing of the malaria parasite.
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Affiliation(s)
- Siva Kumar Rokkam
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Andhra Pradesh, India
| | - Mamta Yadav
- Malaria Drug Discovery Lab, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Mayank Joshi
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Mohali, Punjab, 140306, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER), Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Mohali, Punjab, 140306, India
| | - Dinkar Sahal
- Malaria Drug Discovery Lab, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Nageswara Rao Golakoti
- Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Andhra Pradesh, India
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24
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Mahato S, Meheta N, Kotakonda M, Joshi M, Shit M, Choudhury AR, Biswas B. Synthesis, structure, polyphenol oxidase mimicking and bactericidal activity of a zinc-schiff base complex. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114933] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Manar KK, Chakrabortty S, Porwal VK, Prakash D, Thakur SK, Choudhury AR, Singh S. Two‐Coordinate Cu(I) and Au(I) Complexes Supported by BICAAC and CAAC Ligands. ChemistrySelect 2020. [DOI: 10.1002/slct.202002295] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Krishna K. Manar
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Soumyadeep Chakrabortty
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Vishal Kumar Porwal
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Darsana Prakash
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Sandeep Kumar Thakur
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
| | - Sanjay Singh
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81 SAS Nagar, Mohali 140306 Punjab India
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26
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Singla L, Yadav HR, Roy Choudhury A. Evaluation of fluorine-mediated intermolecular interactions in tetrafluorinated tetrahydroisoquinoline derivatives: synthesis and computational studies. Acta Crystallogr B Struct Sci Cryst Eng Mater 2020; 76:604-617. [PMID: 32831279 DOI: 10.1107/s2052520620006873] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/21/2020] [Indexed: 06/11/2023]
Abstract
Intermolecular interactions involving the aromatic C-F group in the absence of other strong hydrogen bond acceptors is the theme of this article. Weak interactions involving fluorine are known to generate various supramolecular synthons, thereby altering the crystal structures of small organic molecules. It is demonstrated that the weak interactions involving organic fluorine play a major role in directing crystal packing of highly flexible organic molecules like diphenyl tetrahydroisoquinolines reported herein. The intramolecular C-H...F hydrogen bonds are found to be significant in controlling the molecular conformation in specific cases wheras the intermolecular interactions involving the C-F groups result in a wide range of supramolecular synthons involving C-H...F and C-F...F-C interactions. The interactions are studied computationally to provide insight into their energies and the topology of the interactions is studied using Atoms in Molecules. C-H...F-C interactions are found to be quite stabilizing in nature with the stabilization energy of -13.9 kcal mol-1.
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Affiliation(s)
- Labhini Singla
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Knowledge City, Mohali, Punjab 140306, India
| | - Hare Ram Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Knowledge City, Mohali, Punjab 140306, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S. A. S. Nagar, Manauli PO, Knowledge City, Mohali, Punjab 140306, India
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27
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Mahato S, Meheta N, Kotakonda M, Joshi M, Ghosh P, Shit M, Choudhury AR, Biswas B. Ligand directed synthesis of a unprecedented tetragonalbipyramidal copper (II) complex and its antibacterial activity and catalytic role in oxidative dimerisation of 2‐aminophenol. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5935] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shreya Mahato
- Department of Chemistry University of North Bengal Darjeeling‐734013 India
| | - Nishith Meheta
- Department of Chemistry University of North Bengal Darjeeling‐734013 India
| | | | - Mayank Joshi
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO Mohali Punjab 140306 India
| | - Prasanta Ghosh
- Department of Chemistry Narendrapur Ramakrishna Mission Residential College Kolkata 700103 India
| | - Madhusudan Shit
- Department of Chemistry Dinabandhu Andrews College Kolkata 700084 India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli PO Mohali Punjab 140306 India
| | - Bhaskar Biswas
- Department of Chemistry University of North Bengal Darjeeling‐734013 India
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28
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Kumar Pal C, Mahato S, Joshi M, Paul S, Roy Choudhury A, Biswas B. Transesterification activity by a zinc(II)-Schiff base complex with theoretical interpretation. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119541] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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29
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Punjani V, Mohiuddin G, Kaur S, Choudhury AR, Paladugu S, Dhara S, Ghosh S, Pal SK. Chiral Bent-Shaped Molecules Exhibiting Unusually Wide Range of Blue Liquid-Crystalline Phases and Multistimuli-Responsive Behavior. Chemistry 2020; 26:5859-5871. [PMID: 32083772 DOI: 10.1002/chem.201905707] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/02/2020] [Indexed: 11/11/2022]
Abstract
Recently, an unprecedented observation of polar order, thermochromic behavior, and exotic mesophases in new chiral, bent-shaped systems with a -CH3 moiety placed at the transverse position of the central core was reported. Herein, a homologous series of compounds with even-numbered carbon chains from n=4 to 18 were synthesized, in which -Cl was substituted for -CH3 at the kink position and a drastic modification in the phase structure of the bent-shaped molecule was observed. An unusual stabilization of the cubic blue phase (BP) over a wide range of 16.4 °C has been witnessed. Two homologues in this series (1-12 and 1-14) exhibit an interesting phase sequence consisting of BPI/II, chiral nematic, twist grain boundary, smectic A, and smectic X (SmX) phases. The higher homologues (1-16 and 1-18) stabilize the SmX phase enantiotropically over the entire temperature range. Crystal structure analysis confirmed the bent molecular architecture, with a bent angle of 148°, and revealed the presence of two different molecular conformations in an asymmetric unit of compound 1-4. A DFT study corroborated that the -Cl moiety at the central core of the molecule led to an increase in the dipole moment along the transverse direction, which, in turn, facilitated the unusual stabilization of frustrated structures. Crystal polymorphism has been evidenced in three homologues (1-10, 1-12, and 1-14) of the series. On the application of mechanical pressure through grinding, compound 1-10 transformed from a bright yellow crystalline solid to a dark orange-green amorphous solid, which reversed upon dropwise addition of dichloromethane, indicating reversible mechanochromism in this class of compounds. In addition, excellent thermochromic behavior has been observed for compound 1-10 with a controlled temperature-color combination.
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Affiliation(s)
- Vidhika Punjani
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli, 140306, India
| | - Golam Mohiuddin
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli, 140306, India
| | - Supreet Kaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli, 140306, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli, 140306, India
| | | | - Surajit Dhara
- School of Physics, University of Hyderabad, Hyderabad, 500046, India
| | - Sharmistha Ghosh
- Department of Physics, University of Calcutta, 92 Acharyya Prafulla Chandra Road, Kolkata, 700009, India
| | - Santanu Kumar Pal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, Manauli, 140306, India
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30
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Mudi PK, Mahato RK, Joshi M, Paul S, Choudhury AR, Biswas B. Synthesis and structural characterization of a linkage isomer to a mononuclear Nickel(II) complex: Experimental and computational depiction of phosphoesterase efficiency. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127083] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Manar KK, Porwal VK, Kamte RS, Adhikari M, Thakur SK, Bawari D, Choudhury AR, Singh S. Reactions of a BICAAC with hydroboranes: propensity for Lewis adduct formation and carbene insertion into the B-H bond. Dalton Trans 2019; 48:17472-17478. [PMID: 31714564 DOI: 10.1039/c9dt03382c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of a bicyclic (alkyl)(amino)carbene (BICAAC) towards different boranes has been examined in the present work. The reactions with boranes BX3·SMe2 (X = H, Cl, Br), BF3·OEt2 and BCl3 yield Lewis adducts [BICAAC·BH3] (1), [BICAAC·BHCl2] (2), [BICAAC·BH2Cl] (3), [BICAAC·BF3] (4), [BICAAC·BCl3] (5) and [BICAAC·BBr3] (6) respectively, whereas more hydridic boranes, 9-borabicyclo[3.3.1]nonane (9-BBN) and catecholborane (HBcat), enable the insertion of the carbene carbon into the B-H bond to form [BICAAC(H)-(9-BBN)] (7) and [BICAAC(H)-Bcat] (8). These complexes are the first examples of BICAAC-boron compounds and have been characterized using IR, multinuclear NMR spectroscopy, HRMS spectrometry and single crystal X-ray diffraction. Computational analyses were also performed to gain insight into the mechanism of B-H bond activation and adduct formation. Furthermore, the reactions of the BICAAC with boranes have been compared with the known reactions of CAACs and NHCs.
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Affiliation(s)
- Krishna K Manar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India.
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32
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Pal CK, Mahato S, Yadav HR, Shit M, Choudhury AR, Biswas B. Bio-mimetic of catecholase and phosphatase activity by a tetra-iron(III) cluster. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.114156] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Santra B, Kumar V, Kalita P, Gupta V, Mandal D, Chandra A, Joshi M, Choudhury AR, Jana A, Chandrasekhar V. Molecular di- and tetra-nuclear zinc(II) phosphates with sterically hindered aryl phosphate mono esters ligands. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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34
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Negi C, Bawari D, Thakur SK, Choudhury AR, Singh S. Concise access to aluminum containing [3.3](2,6)pyridinophane and molecular bowl using 2,6-diamidopyridine modules. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.120943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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35
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Kachwal V, Joshi M, Mittal V, Choudhury AR, Laskar IR. Strategic design and synthesis of AIEE (Aggregation Induced Enhanced Emission) active push-pull type pyrene derivatives for the ultrasensitive detection of explosives. Sensing and Bio-Sensing Research 2019. [DOI: 10.1016/j.sbsr.2019.100267] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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36
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Dubey P, Mukherjee S, Choudhury AR, Viswanathan KS. Fluorescence Enhancement of Tb
3+
in the Tb
3+
‐Trimesic Acid‐Gd
3+
Complex: Role of Polynuclear Structures. ChemistrySelect 2019. [DOI: 10.1002/slct.201900035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pankaj Dubey
- Department of Chemical SciencesIndian Institute of Science Education & Research Mohali 140306, Punjab India
| | - Srijit Mukherjee
- Department of Chemical SciencesIndian Institute of Science Education & Research Mohali 140306, Punjab India
- JILAUniversity of Colorado at Boulder and National Institute of Standards and Technology, 440 UCB, Boulder Colorado 80309 United States
- Department of Chemistry and BiochemistryUniversity of Colorado at Boulder, 215 UCB, Boulder Colorado 80309 United States
| | - Angshuman Roy Choudhury
- Department of Chemical SciencesIndian Institute of Science Education & Research Mohali 140306, Punjab India
| | - K. S. Viswanathan
- Department of Chemical SciencesIndian Institute of Science Education & Research Mohali 140306, Punjab India
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37
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Dey D, Patra M, Al-Hunaiti A, Yadav HR, Al-mherat A, Arar S, Maji M, Choudhury AR, Biswas B. Synthesis, structural characterization and C H activation property of a tetra-iron(III) cluster. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Das D, Roy Choudhury A. Water-assisted ground state intra-molecular proton transfer in 2,5-dihydroxy-substituted azobenzenes: experimental and computational studies. CrystEngComm 2019. [DOI: 10.1039/c8ce01878b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phenomenon of ground-state proton transfer in a series of 2,5-dihydroxy azobenzene derivatives has been studied. In addition, the effect of the substitutions and water molecules has been investigated by the theoretical calculation.
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Affiliation(s)
- Dhiraj Das
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Mohali
- India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Mohali
- India
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39
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Garai M, Das A, Joshi M, Paul S, Shit M, Choudhury AR, Biswas B. Synthesis and spectroscopic characterization of a photo-stable tetrazinc(II)–Schiff base cluster: A rare case of ligand centric phenoxazinone synthase activity. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.09.044] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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40
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De A, Sahu A, Paul S, Joshi M, Choudhury AR, Biswas B. Structural and luminescent properties of a new 1D Cadmium(II) coordination polymer: A combined effort with experiment & theory. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.081] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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41
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Bawari D, Negi C, Jaiswal K, Prashanth B, Choudhury AR, Singh S. Group 13 element containing conformationally rigid "N-E-N" heteroatomic bridged [3.3](2,6)pyridinophanes (E = B, Al). Chem Commun (Camb) 2018; 54:8857-8860. [PMID: 30039144 DOI: 10.1039/c8cc05154b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The first examples of group 13 element containing pyridinophanes have been assembled using heteroatom N-E-N bridges (E = B, Al). The presence of B and Al as acceptor atoms in the bridges and their coordination with pyridine nitrogen has a very strong influence on the conformational rigidity of the pyridinophanes.
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Affiliation(s)
- Deependra Bawari
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India.
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42
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Bawari D, Goswami B, R SV, Thakur SK, Varun Tej RV, Roy Choudhury A, Singh S. Neutral and cationic cyclic (alkyl)(amino)carbene mercury [cAAC-Hg(ii)] complexes: scope of hydroamination of alkynes with organomercury compounds. Dalton Trans 2018; 47:6274-6278. [PMID: 29568832 DOI: 10.1039/c7dt04589a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study demonstrates the first synthesis of cyclic (alkyl)(amino)carbene (cAAC) adducts of Hg(ii), [cAACMe·HgBr(μ-Br)]2 (1a) and [cAACcy·HgBr(μ-Br)]2 (1b). Adduct 1b catalyzes intermolecular hydroamination of aromatic alkynes and amines under mild conditions to afford aromatic imines. The quest to prepare an electrophilic Hg(ii) complex resulted in the synthesis of cationic [(cAACcy)2Hg(H2O)]2+2[NO3]- (3) by reacting 1b with AgNO3.
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Affiliation(s)
- Deependra Bawari
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India.
| | - Bhupendra Goswami
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India.
| | - Sabari V R
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India.
| | - Sandeep Kumar Thakur
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India.
| | - R V Varun Tej
- Department of Chemistry, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India.
| | - Sanjay Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India.
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43
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Joshi M, Roy Choudhury A. Salts of Amoxapine with Improved Solubility for Enhanced Pharmaceutical Applicability. ACS Omega 2018; 3:2406-2416. [PMID: 30023832 PMCID: PMC6045396 DOI: 10.1021/acsomega.7b02023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 02/09/2018] [Indexed: 06/08/2023]
Abstract
The objective of pharmaceutical cocrystallization is to create crystalline analogues that have vastly different properties, such as solubility, melting point, stability, and bioavailability from that observed in the pure active pharmaceutical ingredients (APIs). Amoxapine is a benzoxazepine derivative and exhibits antidepressant properties. Amoxapine has very low solubility in water, so it was cocrystallized with natural acids in a 1:1 ratio in appropriate solvents by the solvent-drop grinding method. Single crystals of cocrystals were grown by the solvent evaporation method in water, ethanol, and methanol. Crystal structures of API salts were determined by single-crystal X-ray diffraction. Salts were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, and powder X-ray diffraction. Solubility of salts was determined in water by the shake-flask method at 37 °C using UV-vis spectroscopy. Salts of amoxapine with different acids were successfully developed, and their crystal structure was determined. Enhanced solubility was found in the salts of amoxapine for pharmaceutical application in drug formulation.
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44
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Chatterjee A, Yadav HR, Choudhury AR, Ali A, Singh Y, Ghosh R. Tyrosinase and catecholase-like activities of a dinuclear Cu(II) complex. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.11.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Dhingra S, Barman DJ, Yadav HR, Eyyathiyil J, Bhowmik P, Kaur P, Adhikari D, Roy Choudhury A. Structural and computational understanding of weak interactions in “bridge-flipped” isomeric tetrafluoro-bis-benzylideneanilines. CrystEngComm 2018. [DOI: 10.1039/c7ce01872j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structural and computational insights into inter-molecular interactions in isomeric bridge-flipped tetrafluoro-bis-benzylideneanilines.
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Affiliation(s)
- Shallu Dhingra
- Department of Chemistry and Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | | | - Hare Ram Yadav
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Mohali
- India
| | - Jusaina Eyyathiyil
- Indian Institute of Science Education and Research Bhopal
- Bhopal 462066
- India
| | - Prasanta Bhowmik
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Mohali
- India
| | - Parmeet Kaur
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Mohali
- India
| | - Debashis Adhikari
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Mohali
- India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Mohali
- Mohali
- India
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46
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Kachwal V, Alam P, Yadav HR, Pasha SS, Roy Choudhury A, Laskar IR. Simple ratiometric push–pull with an ‘aggregation induced enhanced emission’ active pyrene derivative: a multifunctional and highly sensitive fluorescent sensor. NEW J CHEM 2018. [DOI: 10.1039/c7nj03964f] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A simple and efficient pyrene based luminescent multifunctional probe was utilized in selective and sensitive ratiometric detection of H+, Al3+ and picric acid.
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Affiliation(s)
- Vishal Kachwal
- Department of Chemistry
- Birla Institute of Technology and Science
- Pilani Campus
- Pilani
- India
| | - Parvej Alam
- Department of Chemistry
- Birla Institute of Technology and Science
- Pilani Campus
- Pilani
- India
| | - Hare Ram Yadav
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER)
- Mohali
- India
| | - Sheik Saleem Pasha
- Department of Chemistry
- Birla Institute of Technology and Science
- Pilani Campus
- Pilani
- India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER)
- Mohali
- India
| | - Inamur Rahaman Laskar
- Department of Chemistry
- Birla Institute of Technology and Science
- Pilani Campus
- Pilani
- India
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47
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Garai M, Dey D, Yadav HR, Choudhury AR, Maji M, Biswas B. Catalytic Fate of Two Copper Complexes towards Phenoxazinone Synthase and Catechol Dioxygenase Activity. ChemistrySelect 2017. [DOI: 10.1002/slct.201702113] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mamoni Garai
- Department of Chemistry; Raghunathpur College; Purulia 723 133,West Bengal India
| | - Dhananjay Dey
- Department of Chemistry; Raghunathpur College; Purulia 723 133,West Bengal India
| | - Hare Ram Yadav
- Department of Chemical Sciences; Indian Institute of Science Education and Research, S.A.S. Nagar, Sector 81, Manauli PO; Mohali 140 306 India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences; Indian Institute of Science Education and Research, S.A.S. Nagar, Sector 81, Manauli PO; Mohali 140 306 India
| | - Milan Maji
- Department of Chemistry; National Institute of Technology; Durgapur 713209, West Bengal India
| | - Bhaskar Biswas
- Department of Chemistry; Raghunathpur College; Purulia 723 133,West Bengal India
- Present Address: Department of Chemistry; Surendranath College; 24/2 M.G. Road, Kolkata 700009, West Bengal India
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48
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Joshi M, Roy Choudhury A. Salts of amoxapine with improved solubility for enhanced pharmaceutical applicability. Acta Crystallogr A Found Adv 2017. [DOI: 10.1107/s2053273317093652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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49
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Mitra M, Kundu T, Kaur G, Sharma G, Roy Choudhury A, Singh Y, Ghosh R. A ferromagnetic tetranuclear Cu II complex: catecholase and phenoxazinone synthase activities. Acta Crystallogr A Found Adv 2017. [DOI: 10.1107/s205327331708648x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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50
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Mondal PK, Yadav HR, Choudhury AR, Chopra D. Quantitative characterization of new supramolecular synthons involving fluorine atoms in the crystal structures of di- and tetrafluorinated benzamides. Acta Crystallogr B Struct Sci Cryst Eng Mater 2017; 73:805-819. [PMID: 28980984 DOI: 10.1107/s2052520617006114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 04/23/2017] [Indexed: 06/07/2023]
Abstract
Strong hydrogen bonds play a significant role in crystal packing. In particular, the involvement of interactions involving fluorine in controlling the crystal packing requires appropriate attention, especially in the presence of other strong hydrogen bonds. In the present study, a detailed quantitative assessment has been performed of the nature, energetics and topological properties derived from the electron density in model compounds based on fluorinated benzamides (a total of 46 fluorine-substituted benzamides containing multiple fluorine atoms) in the solid state. The primary motivation in the design of such molecules is to enhance the acidity of the interacting H atoms in the presence of an increasing number of F atoms on the molecular scaffold, resulting in increased propensity towards the formation of intermolecular interactions involving organic fluorine. This exercise has resulted in the identification of new and frequently occurring supramolecular synthons involving F atoms in the packing of molecules in the solid state. The energetics associated with short and directional intermolecular Csp2-H...F-Csp2 interactions with significantly high electrostatic contributions is noteworthy, and the topological analysis reveals the bonding character of these ubiquitous interactions in crystal packing in addition to the presence of Csp2-F...F-Csp2 contacts.
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Affiliation(s)
- Pradip Kumar Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462066, India
| | - Hare Ram Yadav
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Mohali, Punjab, 140306, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research, Mohali, Sector 81, S.A.S. Nagar, Manauli PO, Mohali, Punjab, 140306, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462066, India
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