Publications, Patents & Book Chapter
Publications:
26. Zhenyu Chen, Geyang Song, Leiming Qi, Ramachandran Gunasekar, Christophe Aïssa, Craig Robertson, Alexander Steiner, Dong Xue, and Jianliang Xiao. "Reductive Transamination of Pyridinium Salts to N-Aryl Piperidines" - J. Org. Chem. 2024; DOI: 10.1021/acs.joc.4c00493.
25. Jianjun Wu, Zhenyu Chen, Jonathan H. Barnard, Ramachandran Gunasekar, Chunyang Pu, Xiaofeng Wu, Shiyu Zhang, Jiwu Ruan, Jianliang Xiao. "Synthesis of Chiral Piperidines from Pyridinium Salts via Rhodium-Catalysed Transfer Hydrogenation" - Nature Catalysis 2022, 5, 982–992
24. Ramachandran Gunasekar, Ross L. Goodyear, Ilaria Proietti Silvestri and Jianliang Xiao. "Recent Developments in Enantio- and Diastereoselective Hydrogenation of N-Heteroaromatic Compounds" - Org. Biomol. Chem., 2022, 20, 1794-1827
23. Shinji Tanaka, Ramachandran Gunasekar, Yohei Hori, and Masato Kitamura. "Bisamidine–Cu(I)-Catalyzed C-Allylation of 1,3-Dicarbonyl Compounds with Simple Cyclic Alkenes Using di-tert-Butyl Peroxide" - Chemistry Letters 2018, 47, 1486-1489 (Impact factor 1.550)
22. Vivek Panyam Muralidharan, Ramachandran Gunasekar, Sathiyanarayanan Kulathu Iyer "Synthesis of Highly Functionalized Strained Bicyclic Dilactam Derivatives" - Synthetic Communications. 2018, 48, 1671-1677 (Impact factor 1.134)
21. Shinji Tanaka, Ramachandran Gunasekar, Tatsuya Tanaka, Yoko Iyoda, Yusuke Suzuki, and Masato Kitamura "Modular Construction of Protected 1,2/1,3-Diols, -Amino Alcohols, and -Diamines via Catalytic Asymmetric Dehydrative Allylation: An Application to Synthesis of Sphingosine" - J. Org. Chem., 2017, 82 (17), pp 9160–9170 (Impact factor 4.849)
20. Ramachandran Gunasekar, Pichandi Thamaraiselvi, Ravindranath S. Rathore, Kulathu Iyer Sathiyanarayanan, and Shanmugam Easwaramoorthi "Tuning the Electronic Properties of 2-Cyano-3-Phenylacrylamide Derivatives" - J. Org. Chem., 2015, 80, 12351−12358 (Impact factor 4.849)
19. G. Ramachandran and Kulathu Iyer Sathiyanarayanan, “Dual behaviour of ammonium acetate for the synthesis of diverse symmetrical /unsymmetrical bis [1, 3] oxazines possessing anti-cancer activity” - Synthetic Communication 2015, 45(6), 750-757 (Impact factor 1.065).
18. G. Ramachandran and Kulathu Iyer Sathiyanarayanan, “Dearomatization strategies of Heteroaromatic compounds” - A review article Current Organocatalysis 2015, 2, 14-26.
17. G. Ramachandran and Kulathu Iyer Sathiyanarayanan, “ Domino reaction for the synthesis of highly functionalized triazatricyclo [6.2.2.01, 6] dodecane” Synthetic Communication 45 (2015) 760-767 (Impact Factor 1.065)
16. G. Ramachandran, M. Triveni, V. Sathesh, B. Umamahesh and Kulathu Iyer Sathiyanarayanan, “Eco-efficient, chemoselective and rapid access to aminals from lactams using recyclable silica supported FeCl3 catalyst in green solvent” Chemistry Letters 2014, 43, 1631–1633 (Impact Factor 1.550)
15. Ramachandran Gunasekar, Raman Arunachalam, Easwaramoorthi S, RS Rathore and Kulathu Iyer Sathiyanarayanan. - "Four component domino reaction for the synthesis of highly functionalized dimeric tetracyclic dilactam fluorophores: H-bond Aided Self- Assembly" - RSC Advances 2014,4, 29276-29280 (Impact Factor 3.108)
14. Munusamy Sathishkumar, Gunasekar Ramachandran and Kulathu Iyer Sathiyanarayanan - "Cyclododecanone as a recyclable protecting group for the synthesis of highly functionalized 3-amino-2-thiohydantoins from conventional starting materials" - RSC Advances 2014,4, 8498-8501 (Impact Factor 3.108)
13. W. Sreevalli, G. Ramachandran, W. Madhuri and K. Sathiyanarayanan - "Green Trends in Mannich Reaction" - Mini-Reviews in Organic Chemistry, 2014, 11 (1), 97-115 (Impact Factor 1.773)
12. Gunasekar Ramachandran and Kulathu Iyer Sathiyanarayanan - "Efficient iodine catalyzed the chemoselective synthesis of aminals - An access to N, N-acetals by the addition of lactams to N-acyl imines" Tetrahedron Letters 2013, 54, 6758–6763. (Impact Factor 2.379)
11. Venkatesan Sathesh, Munusamy Sathishkumar, Gunasekar Ramachandran, Ravindranath S. Rathore and Kulathu Iyer Sathiyanarayanan - "A Green approach for the one-pot multi-component synthesis of N-substituted γ, δ and ε- lactams involving C-N bond formation catalyzed by FeCl3" RSC Advances 2013, 3, 23035-23045 (Impact Factor 3.108).
10. Sathesh Venkatesan , Umamahesh B , Ramachandran Gunasekar , R.S Rathore and Kulathu Iyer Sathiyanarayanan - "Direct anti and regio-specific aldol reactions of cyclododecanone catalyzed by Alkali metal hydroxides: Implications for supramolecular helical design" New Journal of Chemistry 2012,36, 2292-2301. (Impact Factor 3.277)
9. Gunasekar Ramachandran and Kulathu Iyer Sathiyanarayanan "Organic Domino Reactions Catalyzed by Molecular Iodine" -Recent Patents on Catalysis 2012, 1(2), 137-158.
8. Natesan Sundaramoorthy Karthikeyan, Gunasekar Ramachandran, Ravindaranath Rathore and Kulathu Iyer Sathiyanarayanan " Synthesis and Structural confirmation of product selective Cyclic [1,3]oxazines and Schiff bases bearing symmetrical / unsymmetrical units" – Asian Journal of Organic Chemistry (Wiley) 2012, 1, 173-179 (Impact factor - 2.788).
7. Umamahesh Balijapalli, Sathesh Venkatesan, Ramachandran Gunasekar, Sathishkumar Munusamy and Sathiyanarayanan Kulatu Iyer. "LaCl3.7H2O as an efficient catalyst for one-pot synthesis of highly functionalized piperidines via multi-component organic reactions." Catalysis letters 2012, 142, 895–900 (Impact factor - 2.307)
6. Karthikeyan. N.S, Ramachandran. G, Sathiyanarayanan. K, and Girdharan. P. "Synthesis and molecular structure of new macro acyclic Mannich derivative: Symmetrical and unsymmetrical 2-[(E)-(benzylideneamino)(aryl)methyl] Cyclododecanone." - Synthetic Communication 42: 3429–3440, 2012. (Impact factor - 1.065)
5. Karthikeyan. N.S, Ramachandran. G, Sathiyanarayanan. K, Girdharan. P, Suresh. P.S, Kumar. M.S and Kasi Sankar. V. "Screening of Anticancer Activity and Molecular Modeling Study of Novel Phenanthridine, Azabicycle and Cycloalkanone Derivatives." journal of pharmacy research 2012, 5(5), 2959-2964.
4. Hongqi Li, G. Ramachandran, M. Sathishkumar, K. Sathiyanarayanan and R. S. Rathore. "1-Methoxy-4-({[(4-methoxyphenyl)-sulfanyl](phenyl)methyl}sulfanyl) benzene." - Acta Cryst. (2012). E68, o782.
3. Hongqi Li, G. Ramachandran, V. Sathesh, K. Sathiyanarayanan and R. S. Rathore. " 1,1'-[(2-Bromo-phen-yl)-methyl-ene]- dipyrrolidin-2-one" - Acta Cryst. (2012). E68, o782.
2. N. S. Karthikeyan, G. Ramachandran, K. Sathiyanarayanan, P. Raghavaiahb and R. S. Rathore. 3-(7,8,13,14- Tetrahydrodibenzo[a,i]- phenanthridin-5-yl)benzene-1,2-diol - Acta Cryst. E66, o1753
1. Ramachandran. G, Karthikeyan. N.S., Sathiyanarayanan. K and Girdharan. P "Efficient iodine catalyzed three components domino reaction for the synthesis of 1-((phenylthio) (phenyl) methyl) pyrrolidin-2-one derivatives possessing anticancer activities" – Organic and Biomolecular Chemistry 2012, 10, 5343.(Impact factor - 3.564)
Patents:
1. Gunasekar Ramachandran and Kulathu Iyer Sathiyanarayanan. "A domino reaction for the synthesis of 1-substituted phenylthio substituted phenyl methyl pyrrolidones". Granted Indian patent; Patent Number: 323519.
2. Gunasekar Ramachandran, Natesan Sundaramoorthy Karthikeyan and Kulathu Iyer Sathiyanarayanan. "Synthesis of mono and bis [1, 3] oxazines bearing unsymmetrical units by a controllable substitution pattern in a single step using dual behaviour of ammonium acetate". Granted Indian patent; Patent Number: 328454 .
3. Gunasekar Ramachandran and Kulathu Iyer Sathiyanarayanan. "Synthesis of multifunctionalized benzo[h]quinoline- 2,12(3H)-dione derivatives. A new class of Aggregation Induced Emission Fluorophores". Granted Indian patent; Patent Number: 302352 .
Book Chapter:
1. Gunasekar Ramachandran and Kulathu Iyer Sathiyanarayanan “Synthesis and anti-cancer studies of lactams and [1, 3] oxazines” Scholars-Press Publisher - ISBN: 978-3-639-71567-5.
Scientific conference participated
· Participated in Indian Council of Chemists, 28th Annual Conference conducted in Hemchandracharya North Gujarat University, Patan, on Nov. 2009.
· Participated in Faculty Development Program on Multidimensional NMR: Basic Principle and its Application, VIT University, India on Mar. 2010.
Scientific workshop participated
· Cheminfomatics and Approaches in Drug Design conducted by SCHRODINGER, held on Dec. 2009 at VIT University, Vellore, India.