Publications | iitbbsr

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Publications

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DABSO-mediated Pummerer reaction enables onepot synthesis of pyrroloquinolines for accessing marinoquinolines: mechanistic, photophysical and pharmacological investigations Rahimuddin Khan, Dipun Kumar Penthi, Aditi Chatterjee, Chandrakanta Sahoo, Shanti Gopal Patra, Viswanathan Arun Nagaraj and Tabrez Khan, Org. Chem. Front. 2024 (Just Accepted) https://doi.org/10.1039/D4QO01512F

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Thermal vs. Visible-Light Photoredox-Catalyzed Cascade Radical Cyclization Involving SO2 Fixation to Access 6-Alkylsulfonylmethyl Phenanthridines Tonish Kumar Sahu, Abhaykumar Vishwakarma, Vidyanshu Kumar, Rahimuddin Khan and Tabrez Khan, Asian J. Org. Chem. 2024, 13, e20240002 (1-7) https://doi.org/10.1002/ajoc.202400022

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Total Synthesis of (−)-Magnoshinin and (+)-Merrilliaquinone: Application of a Late-Stage Oxidative Functionalization Protocol; Abdus Salam, Dileep Kumar, Tonish Kumar Sahu, Rahimuddin Khan and Tabrez Khan, Eur. J. Org. Chem. 2022 e202101452 (1-8) https://doi.org/10.1002/ejoc.202101452

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DDQ-Catalyzed Oxidative C(sp3)–H Functionalization of Aryltetralins and Subsequent Chemoselective Oxidative Demethylation to Access Dihydronaphthalenes and Dihydronaphthoquinones; Dileep Kumar, Abdus Salam, Tonish Kumar Sahu, Sujit Soumitra Sahoo and Tabrez Khan, J. Org. Chem. 2021, 86, 15096-15116. https://doi.org/10.1021/acs.joc.1c01780

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Concise and Scalable Total Syntheses of Lamellarin Z and other Natural Lamellarins; Virendra Kumar, Abdus Salam, Dileep Kumar and Tabrez Khan, ChemistrySelect 2020, 5, 14510-14514. https://doi.org/10.1002/slct.202004008

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A silica-gel accelerated [4+2] cycloaddition-based biomimetic approach towards the first total synthesis of magterpenoid C; Dileep Kumar, Virendra Kumar, Abdus Salam and Tabrez Khan, Tetrahedron Lett. 2019, 60, Article 151137. https://doi.org/10.1016/j.tetlet.2019.151137

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A Scalable Total Syntheses of some Natural and Unnatural Lamellarins: Application of a One-Pot Domino process for Regioselective Access to the Central 1,2,4-Trisubstituted Pyrrole Core; Virendra Kumar, Annapurna Awasthi, Abdus Salam and Tabrez Khan, J. Org. Chem. 2019, 84, 11596-11603. https://doi.org/10.1021/acs.joc.9b01521

A Metal Free Domino Process for Regioselective Synthesis of 1,2,4-Trisubstituted Pyrroles: Application towards the Formal Synthesis of Ningalin B; Virendra Kumar, Annapurna Awasthi, Abhisek Metya and Tabrez Khan, J. Org. Chem. 2019, 84, 11581-11595. https://doi.org/10.1021/acs.joc.9b01520

Total Syntheses of several Iridolactones and the Putative Structure of Noriridoid Scholarein A: An Intramolecular Pauson-Khand Reaction based One-stop Synthetic Solution; Abdus Salam, Sayan Ray, Md. Abu Zaid, Dileep Kumar and Tabrez Khan, Org. Biomol. Chem. 2019, 17, 6831-6842. https://doi.org/10.1039/C9OB00855A

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A De Novo Approach for the Stereoseletive Synthesis of Cyclopenta[c]pyranone Scaffold Present in Iridoids: Formal Syntheses of Isoboonein, Iridomyrmecin and Isoiridomyrmecin ; Manvendra Singh Kaurav, Virendra Kumar, Dileep Kumar, Tabrez Khan, ChemistrySelect 2018, 3, 5566-5570. https://doi.org/10.1002/slct.201800421

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Synthetic studies en route to the first total synthesis of a naturally occurring quinone from Acorus gramineus, iso-merrilliaquinone, iso-magnoshininand 2-epi-3,4-dihydro magnoshinin; Dileep Kumar, Oindreela Das, Manvendra Singh Kaurav, Tabrez Khan, RSC Advances. 2017, 7, 36844-36851. http://pubs.rsc.org/en/content/articlelanding/2017/ra/c7ra05148d

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An Improved Synthesis of Natural Product Inspired Chromenopyrrolizines and Chromenoindolizines Scaffolds: Rapid Access to the Diverse Pyrrolizine Analogs of Aza-Medicarpin and Tetracyclic Isolamellarin Core through a General Base and Metal free Strategy; Tabrez Khan, Virendra Kumar, Oindreela Das, Bull. Chem. Soc. Jpn. 2016, 89, 1331-1340. http://dx.doi.org/10.1246/bcsj.20160205

Total Synthesis and Structural Revision of Antibiotic CJ-16,264; K. C. Nicolaou, Akshay A. Shah, Henry Korman, Tabrez Khan, Lei Shi, Wisuttaya Worawalai, Emmanuel A. Theodorakis, Angew.Chem. Int. Ed. 2015, 54, 9203-9208. DOI: 10.1002/anie.201504337

Model studies toward a synthesis of asperaculin A: exploration of iterative intramolecular Pauson–Khand reaction based strategies to access the dioxa[5.5.5.6] fenestrane framework; G. Mehta, Tabrez B. Khan, Tetrahedron Lett. 2012, 53, 4558-4561. https://doi.org/10.1016/j.tetlet.2012.06.059

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“(1’S,6’S,8’S,9’R)-9’-Bromo-12’-oxaspiro-[1,3-dioxolane-2,4’-tricyclo[6.3.1.01,6]- dodecane] ; G. Mehta, Tabrez B. Khan, Acta Crystallogr., Sect. E: Struct. Rep. Online, 2012, E68, o2411-o2412. https://doi.org/10.1107/S1600536812029777

A biomimetic total synthesis of allomicrophyllone: protective Diels–Alder reaction as a stratagem ; G. Mehta, Tabrez B. Khan, Tetrahedron Lett., 2010, 51, 6590-6593. https://doi.org/10.1016/j.tetlet.2010.10.063

Total synthesis of the fungal metabolite (±)-acremine G: acceleration of a biomimetic Diels–Alder reaction on silica gel ; G. Mehta, Tabrez B. Khan, Y.C. Sunil Kumar, Tetrahedron Lett. 2010, 51, 5116-5119. https://doi.org/10.1016/j.tetlet.2010.07.109

Total syntheses of the fungal metabolites (±)-acremines A, B and I; G. Mehta, Y.C. Sunil Kumar, Tabrez B. Khan, Tetrahedron Lett. 2010, 51, 5112-5115. https://doi.org/10.1016/j.tetlet.2010.07.110

Anthracene-tethered aminomethyl oxadiazole chemosensor: a probe offering selective chromo- and fluorogenic signaling for targeting Cu(II); S. H. Mashraqui, T. Khan, M. Chandiramani, R. Betkar and K. Poonia, J. Incl Phenom Macrocycl. Chem. 2010, 67, 361-367. DOI: 10.1007/s10847-009-9717-4

Rhodamine–Pyridyl Probe: A Selective Optical Reporter for Biologically Important Zn2+, S. H. Mashraqui, T. Khan, S. Sundaram, R. Betkar and M. Chandiramani, Chem. Lett. 2009, 38, 730-731. http://doi.org/10.1246/cl.2009.730

Phenothiazine-pyridyl chalcone: A new easily accessible colorimetric and fluorimetric "on-off " dual sensing probe for Cu2+, S. H. Mashraqui, T. Khan, S. Sundaram, and S. Ghadigaonkar, Tetrahedron Lett. 2008, 49, 3739-3743. hhttps://doi.org/10.1016/j.tetlet.2008.04.041

New PCT probes featuring N-phenylmonoaza-18-crown-6 and aryl/pyridyl oxadiazoles: Optical Spectral Studies of Solvent effects and selected metal ions; S. H. Mashraqui, S. Sundaram, T. Khan, S. Ghadigaonkar and K. Poonia, J. Incl Phenom Macrocycl. Chem., 2008, 62, 81-90. DOI: 10.1007/s10847-008-9441-5

A new intramolecular charge transfer receptor as a selective ratiometric “off-on” sensor for Zn2+, S. H. Mashraqui, T. Khan, S. Sundaram, R. Betkar and M. Chandiramani, Tetrahedron Lett. 2007, 48, 8487- 8490. https://doi.org/10.1016/j.tetlet.2007.09.163

New PCT probes featuring N-phenylmonoaza-18-crown-6 and aryl/pyridyl oxadiazoles: Optical Spectral Studies of Solvent effects and selected metal ions; S. H. Mashraqui, S. Sundaram, T. Khan, S. Ghadigaonkar and K. Poonia, J. Incl Phenom Macrocycl. Chem., 2008, 62, 81-90. https://doi.org/10.1016/j.tetlet.2010.07.110

Zn2+ selective luminescent “off-on” probes derived from diaryl oxadiazole and aza-15-crown-5”; S. H. Mashraqui, S. Sundaram, T. Khan and A. C. Bhasikuttan, Tetrahedron 2007, 63, 11093-11100. https://doi.org/10.1016/j.tet.2007.08.031

Benzimidazole-Chalcone: A Selective Intramolecular Charge-transfer Probe for Biologically Important Zinc Ions”, S. H. Mashraqui, S. Sundaram and T. Khan, Chem. Lett. 2006, 35, 786-787. http://doi.org/10.1246/cl.2006.786

Aza-crown ether tethered with benzothiazole: Synthesis and optical spectral studies”, S. H. Mashraqui, V. Dhaval, S. Sundaram and T. B. Khan, Indian J. Chem., Sect B 2006, 45 B, 815-819. https://doi.org/

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