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Publications from CSIR-CDRI

35. Syntheses of Millingtonine and Incargranine A Following a Unified Cross-Dimerization-Aromatization Strategy 

Saddam Husen, Priyankar Jha, Ravindra Kumar*.

Org. Lett. (2025).

https://doi.org/10.1021/acs.orglett.5c04115

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34.Organocatalysed three-component modular synthesis of BN isosteres and BN-2,1-azaboranaphthalenes via Wolff-type rearrangement. 

Akansha Singh, Ruchir Kant,, Mary Grellier, Ravindra Kumar*.

Nat. Chem. (2025).

https://doi.org/10.1038/s41557-025-01938-1

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33. Dearomatization–scission–aromatization of anilines: En route to synthesis of 3,3-disubstituted oxindoles with a wide range of heteroatom nucleophiles

Priyankar Jha, Saddam Husen, Sagar Sinha  and  Ravindra Kumar*.

Chem. Commun., 2025,61, 13707-13710

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32. Chemo- and Regio-selective Dual-Functionalization ofArenes: Synthesis of Multi-Functional Aromatics viaAromaticity Destruction-Reconstruction Process.

Saddam Husen and Ravindra Kumar*.

Eur. J. Org. Chem. 2025, 28, e202500085

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31. Building an All Carbon Quaternary Center via Redox-Neutral Geminal Dual C−H Functionalization of Oxindoles.

Priyankar Jha, Saddam Husen, and Ravindra Kumar*.

Org. Lett. 2025, 27, 1864−1870

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30. Anion-Relay Double Aza-Michael–Michael Cascades to Enone-Tethered Cyclohexadienones: Access to an Intricate Bridged Ring System.

Anil Chauhan, Raj Kumar Patel, Akhilesh Yadav, Ruchir Kant, Ravindra Kumar*.

Org. Lett. 2024, 26, 5602-5608

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29. Discovery and structure − activity relationships of 2,4,5-trimethoxyphenyl pyrimidine derivatives as selective D5 receptor partial agonists                                                                      

Sakesh Kumar, Sumit K. Rastogi, Subrata Roy, Kajal Sharma, Santosh Kumar, Debalina Maity, Diwan Chand, Sachin Vishwakarma, Jiaur R. Gayen, Kinshuk R. Srivastava, Ravindra Kumar*,  Prem N. Yadav.                                                       

Bioorganic Chemistry, 2024, 153, 107809

28. Polycyclic Pyrazoles from Alkynyl Cyclohexadienones and Nonstabilized Diazoalkanes via [3+ 2]-Cycloaddition/[1, 5]-Sigmatropic Rearrangement/Aza-Michael Reaction Cascade.                                                                                              

Raj Kumar patel, Priyankar Jha, Anil Chauhan, Ruchir Kant, Ravindra Kumar*.     

Org. Lett. 2024, 26, 839–844 ​​​​​

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27. Design, Synthesis and Biological Evaluation of Novel Pyrimidine Derivatives as Bone Anabolic Agents Promoting Osteogenesis via BMP2/SMAD1 Signaling Pathway.                                                                                                              

Sumit Kumar Rastogi, Sonu Khanka, Santosh Kumar, Amar Deep Lakra, Rajat Rathur, Kriti Sharma, Amol Chhatrapati Bisen, Rabi Sankar Bhatta, Ravindra Kumar*, Divya Singh and Arun K Sinha.                                                   

RSC Med. Chem., 2024, 15, 677 - 694

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26. Arylsulfonic Anhydride as Thiol Surrogate for Sulfenylation of sp2 C−H Bond Through De‐oxygenative Reduction with Neutral Ionic Liquid: Scope and Mechanistic Studies.                                                                                                      

Sumit K. Rastogi, D Equbal, S. Kumar, Gaythri PR, Ravindra Kumar*, AK Sinha.

Advanced Synthesis & Catalysis 2023, 365, 4163

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Publications from Ph.D. and Post-Doc

12. Efficient Synthesis of Polycyclic ?-Lactam by Catalytic Carbonylation of Ene-Imines via Nickelacycle Intermediate

Yoichi Hoshimoto, Keita Ashida, Yukai Sasaoka, Ravindra Kumar, K. Kamikawa, X. Verdaguer, A. Riera, Masato Ohashi, Sensuke Ogoshi*

Angew. Chem. Int. Ed. 2017, 56, 8206-8210

11. Strategic Utilization of Multifunctional Carbene for Direct Synthesis of Carboxylic Phosphinic Mixed Anhydride from CO2

Yoichi Hoshimoto,* Takahiro Asada, Sunit Hazra, Takuya Kinoshita, Panukorn Sombut, Ravindra Kumar, Masato Ohashi, Sensuke Ogoshi*

Angew. Chem. Int. Ed. 2016, 55, 16075-16079.

10. Two-step Synthesis of Chiral Fused Tricyclic Scaffolds from Phenols via Desymmetrization on Nickel

Ravindra Kumar, Yoichi Hoshimoto, Eri Tamai, Masato Ohashi, and Sensuke Ogoshi*

Nat. Commun. 2017, 8, 32.

8. Nickel-Catalyzed Enantioselective Synthesis of Cyclobutenes via [2+2] Cycloaddition of a,b-unsaturated carbonyls with 1,3-Enynes

Ravindra Kumar, Eri Tamai, Akira Ohnishi, Akira Nishimura,Yoichi Hoshimoto, MasatoOhashi, Sensuke Ogoshi*

Synthesis 2016, 48, 2789-2794

5. Highly Efficient Activation of Organosilanes with ?2-Aldehyde Nickel Complexes: Key for Catalytic Syntheses of Aryl-, Vinyl-, and Alkynyl-benzoxasiloles

Yoichi Hoshimoto, Hayato Yabuki, Ravindra Kumar, Masato Ohashi, Sensuke Ogoshi*

J. Am. Chem. Soc. 2014, 136, 16752-16755.

4. Enantioselective Alkylation of Aldehyde Using Functionalized Organoboron Reagents By Chiral Titanium Complex

Ravindra Kumar, Hiroki Kawasaki, Toshiro Harada*

Org. Lett. 2013, 15, 4198-4201

3. Catalytic Enantioselective Synthesis of a-substituted Secondary Allylic Alcohols from Terminal Alkynes and Aldehydes via Vinylaluminum Reagents

Ravindra Kumar, Hiroki Kawasaki, Toshiro Harada*

Chem. Eur. J. 2013, 19, 17707-17710

2. One-Step Stereospecific Strategy for the Construction of the Core Structure of the 5,11-Methanomorphanthridine Alkaloids in Racemic as well as in Optically Pure Form: Synthesis of (±)-Pancracine and (±)-Brunsvigine

Ganesh Pandey,* Ravindra Kumar, Prabal Banerjee, Vedawati G. Puranik

Eur. J. Org. Chem. 2011, 4571-4587 

1. Stereospecific route to 5, 11-methanomorphanthridine alkaloids via intramolecular 1, 3-dipolar cycloaddition of Non-stabilized Azomethine Ylide: Formal synthesis of (±)-pancracine

Ganesh Pandey,* Prabal Banerjee, Ravindra Kumar, Vedawati G. Puranik

Org. Lett. 2005, 7, 3713-3716

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