A One-Pot Copper-Catalyzed 3-Fold C-N Bond Coupling Strategy to the Synthesis of Substituted Benzimidazoles
Parthasarathi Subramanian and Krishna P. Kaliappan
Eur. J. Org. Chem,, 2020, DOI: 10.1002/ejoc.202000428
A process for preparing 1,8-naphthalimide, biphenyl dicarboxamide and n-heterocyclic amides from 1, 2 diketones
Krishna P. Kaliappan, Priyanka R. Sakhare and Parthasarathi Subramanian
Indian Pat. App. 2020, IN 201821028477 A 20200207.
Construction of key building blocks towards the synthesis of cortistatins
Satrajit Indu, Rahul D.Telore and Krishna P. Kaliappan
Org. Biomol. Chem., 2020, 18, 2432-2446.
Serendipitous Synthesis of Pyridoquinazolinones via an Oxidative C-C Bond Cleavage
Matthias Brendel, Priyanka R. Sakhare, Gaurav Dahiya, Parthasarathi Subramanian and Krishna P. Kaliappan
J. Org. Chem., 2020, 85, 8102-8110
Synthesis of C1-C9 and C10-C21 Fragments of (-)-Dolabriferol
Anandaraju Bandaru, Debjani Si and Krishna P. Kaliappan
Asian J. Org. Chem., 2020, DOI: 10.1002/ajoc.202000294
Synthesis of C9-C13 and C15-C21 Subunits of Discodermolide
Debjani Si and Krishna P. Kaliappan
Asian J. Org. Chem., 2020, 10.1002/ajoc.202000294
Synthesis of the C1-C10 Fragment of Muamvatin
Anandaraju Bandaru and Krishna P. Kaliappan
Chem. Asian J. 10.1002/asia.202000459
Synthetic approaches towards cortistatins: evolution and progress through its ages
Satrajit Indu and Krishna P. Kaliappan
Org. Biomol. Chem., 2020, 18, 3965-3995.
Sequential Enyne-Metathesis/Diels-Alder Strategy: Rapid Access to Sugar-Oxasteroid-Quinone Hybrids.
Sayyad, Ashik A.; Kaliappan, Krishna P.
Eur. J. Org. Chem., 2017, 2017, 5055-5065
Copper-Catalyzed Cascade Amination Route to N-Aryl Benzimidazoquinazolinones.
Banerjee, Arpan; Subramanian, Parthasarathi; Kaliappan, Krishna P.
J. Org. Chem., 2016, 81, 10424-10432
Recent Trends in Copper-Catalyzed C-H Amination Routes to Biologically Important Nitrogen Scaffolds.
Subramanian, Parthasarathi; Rudolf, Georg C.; Kaliappan, Krishna P.
Chem. - Asian J., 2016, 11, 168-192
An enantioselective total synthesis of Sch-725674.
Ramakrishna, Kota; Kaliappan, Krishna P.
Org. Biomol. Chem., 2015, 13, 234-240
A Domino Enyne/IMDA Approach to the Core Structure of (-) Vinigrol.
Betkekar, Vipul V.; Sayyad, Ashik A.; Kaliappan, Krishna P.
Org. Lett., 2014, 16, 5540-5543
A One-Pot Copper Catalyzed Biomimetic Route to N-Heterocyclic Amides from Methyl Ketones via Oxidative C-C Bond Cleavage.
Subramanian, Parthasarathi; Indu, Satrajit; Kaliappan, Krishna P.
Org. Lett., 2014, 16, 6212-6215
A Unified Strategy Towards N-Aryl Heterocycles by a One-Pot Copper-Catalyzed Oxidative C-H Amination of Azoles.
Subramanian, Parthasarathi; Kaliappan, Krishna P.
Eur. J. Org. Chem., 2014, 2014, 5986-5997
Synthesis of Saturated Six-Membered Ring Lactones.
Palanichamy, Kalanidhi; Kaliappan, Krishna P.
Top. Heterocycl. Chem., 2014, 35, 97-140
Total syntheses of rubiginone A2, C2, and fujianmycin A.
Vanga, Devendar G.; Kaliappan, Krishna P.
RSC Adv., 2014, 4, 12716-12722
Transition-Metal-Catalyzed Selective Cyclization Strategy to 2-Substituted Benzofurans and Indoles en Route to the Oxa Analogues of Isocryptolepine.
Indu, Satrajit; Subramanian, Parthasarathi; Kaliappan, Krishna P.
Eur. J. Org. Chem., 2014, 2014, 7193-7202
A hybrid approach to new molecular scaffolds.
Palanichamy, Kalanidhi; Kaliappan, Krishna P.
Pure Appl. Chem., 2013, 85, 1185-1202
A One-Pot, Copper-Catalyzed Cascade Route to 2-Indolyl-C-glycosides.
Subramanian, Parthasarathi; Kaliappan, Krishna P.
Eur. J. Org. Chem., 2013, 2013, 595-604
Kinugasa Reaction: A Direct One-Pot Route to Highly Functionalized β-Lactams.
Khangarot, Rama K.; Kaliappan, Krishna P.
Eur. J. Org. Chem., 2013, 2013, 7664-7677
Stereoselective Synthesis of Trifluoromethyl Analogues of Polyhydroxypyrrolidines.
Khangarot, Rama K.; Kaliappan, Krishna P.
Eur. J. Org. Chem., 2013, 2013, 2692-2698
A concise total synthesis of (+)-cladospolide D.
Si, Debjani; Kaliappan, Krishna P.
Synlett, 2012, 23, 2822-2826
A Stereoselective Route to Aza-C-aryl Glycosides from Arynes and Chiral Nitrones.
Khangarot, Rama Kanwar; Kaliappan, Krishna P.
Eur. J. Org. Chem., 2012, 2012, 5844-5854
A Tandem Enyne/Ring Closing Metathesis Approach to 4-Methylene-2-cyclohexenols: An Efficient Entry to Otteliones and Loloanolides.
Betkekar, Vipul V.; Panda, Samaresh; Kaliappan, Krishna P.
Org. Lett., 2012, 14, 198-201
A Unified Strategy for the Syntheses of Angucyclinone Antibiotics: Total Syntheses of Tetrangulol, Kanglemycin M, X-14881-E, and Anhydrolandomycinone.
Vanga, Devendar Goud; Kaliappan, Krishna P.
Eur. J. Org. Chem., 2012, 2012, 2250-2259, S2250/1-S2250/24
An efficient copper-catalyzed three-component synthesis of 3-C-linked glycosyl iminocoumarins.
Palanichamy, Kalanidhi; Suravarapu, Sankar R.; Kaliappan, Krishna P.
Synthesis, 2012, 44, 1841-1848
An iterative Shimizu non-aldol approach for the stereoselective synthesis of C13-C22 fragment of callystatin A.
Pujari, Sandip A.; Kaliappan, Krishna P.
Org. Biomol. Chem., 2012, 10, 1750-1753
Recent developments on domino metathesis reactions in India.
Nandurdikar, Rahul S.; Kaliappan, Krishna P.
Chimia, 2012, 66, 899-904
Synthetic utility of sugar-derived cyclic nitrones: a diastereoselective synthesis of linear 4-azatriquinanes.
Bandaru, Anandaraju; Kaliappan, Krishna P.
Synlett, 2012, 23, 1473-1476
Total Synthesis and Stereochemical Assignment of (-)-Zenkequinone B.
Vanga, Devendar G.; Kaliappan, Krishna P.
Synlett, 2012, 23, 2931-2934
A flexible and unified strategy for syntheses of cladospolides A, B, C, and iso-cladospolide B.
Si, Debjani; Sekar, Narayana M.; Kaliappan, Krishna P.
Org. Biomol. Chem., 2011, 9, 6988-6997
A one-pot deprotection and intramolecular oxa-Michael addition to access angular trioxatriquinanes.
Ramakrishna, Kota; Kaliappan, Krishna P.
Synlett, 2011, , 2580-2584
A radical cyclization approach to the formal total syntheses of platencin.
Palanichamy, Kalanidhi; Subrahmanyam, Ayyagari V.; Kaliappan, Krishna P.
Org. Biomol. Chem., 2011, 9, 7877-7886
A Shimizu Non-Aldol Approach to the Formal Total Synthesis of Palmerolide A.
Pujari, Sandip A.; Gowrisankar, Parthasarathy; Kaliappan, Krishna P.
Chem. - Asian J., 2011, 6, 3137-3151
A Stereoselective Synthesis of Sugar-Derived Chiral β-Lactams.
Khangarot, Rama Kanwar; Kaliappan, Krishna P.
Eur. J. Org. Chem., 2011, 2011, 6117-6127, S6117/1-S6117/28
A Formal Total Synthesis of Palmerolide A.
Gowrisankar, Parthasarathy; Pujari, Sandip A.; Kaliappan, Krishna P.
Chem. - Eur. J., 2010, 16, 5858-5862, S5858/1-S5858/63
Application of an Enyne Metathesis/Diels-Alder Cycloaddition Sequence: A New Versatile Approach to the Syntheses of C-Aryl Glycosides and Spiro-C-Aryl Glycosides.
Subrahmanyam, Ayyagari V.; Palanichamy, Kalanidhi; Kaliappan, Krishna P.
Chem. - Eur. J., 2010, 16, 8545-8556, S8545/1-S8545/103
Discovery and Syntheses of "Superbug Challengers"-Platensimycin and Platencin.
Palanichamy, Kalanidhi; Kaliappan, Krishna P.
Chem. - Asian J., 2010, 5, 668-703
Synthesis of a Novel Taxa-Oxa-Sugar Hybrid Core Structure by Tandem Cross-Enyne Metathesis/IMDA.
Nandurdikar, Rahul S.; Subrahmanyam, Ayyagari V.; Kaliappan, Krishna P.
Eur. J. Org. Chem., 2010, , 2788-2799, S2788/1-S2788/13
"Click" chemistry on sugar-derived alkynes: a tandem "click-click" approach to bistriazoles.
Kaliappan, Krishna P.; Kalanidhi, Palanichamy; Mahapatra, Subham.
Synlett, 2009, , 2162-2166
A Versatile Access to Calystegine Analogues as Potential Glycosidases Inhibitors.
Kaliappan, Krishna P.; Das, Prasanta; Chavan, Sanjay T.; Sabharwal, Sushma G.
J. Org. Chem., 2009, 74, 6266-6274
An expedient total synthesis of (-)-cladospolide A.
Kaliappan, Krishna P.; Si, Debjani.
Synlett, 2009, , 2441-2444
A rapid access to new fluorinated 1,3-dienes and benzylic fluorides via metathesis on propargylic fluorides.
Pujari, Sandip A.; Kaliappan, Krishna P.; Valleix, Alain; Gree, Danielle; Gree, Rene.
Synlett, 2008, , 2503-2507
Cope-House cyclization strategy for the synthesis of pyrrolizidines: an expedient route to 5-epi-hyacinthacine A3 and 5-epi-hyacinthacine A5.
Kaliappan, Krishna P.; Das, Prasanta.
Synlett, 2008, , 841-844
Synthetic studies on taxanes: A domino-enyne metathesis/Diels-Alder approach to the AB-ring.
Kaliappan, Krishna P.; Ravikumar, Velayutham; Pujari, Sandip A.
J. Chem. Sci. (Bangalore, India), 2008, 120, 205-216
A New Versatile Strategy for C-Aryl Glycosides.
Kaliappan, Krishna P.; Subrahmanyam, Ayyagari V.
Org. Lett., 2007, 9, 1121-1124
An Expedient Enantioselective Strategy for the Oxatetracyclic Core of Platensimycin.
Kaliappan, Krishna P.; Ravikumar, Velayutham.
Org. Lett., 2007, 9, 2417-2419
Angucyclinone Antibiotics: Total Syntheses of YM-181741, (+)-Ochromycinone, (+)-Rubiginone B2, (-)-Tetrangomycin, and MM-47755.
Kaliappan, Krishna P.; Ravikumar, Velayutham.
J. Org. Chem., 2007, 72, 6116-6126
First enantioselective total synthesis of the angucyclinone-type antibiotic YM-181741.
Kaliappan, Krishna P.; Ravikumar, Velayutham.
Synlett, 2007, , 977-979
Synthetic studies on a marine natural product, palmerolide A: synthesis of C1-C9 and C15-C21 fragments.
Kaliappan, Krishna P.; Gowrisankar, Parthasarathy.
Synlett, 2007, , 1537-1540
A tandem enyne/ring closing metathesis approach to the synthesis of novel angularly fused dioxa-triquinanes.
Kaliappan, Krishna P.; Nandurdikar, Rahul S.; Shaikh, Mobin M.
Tetrahedron, 2006, 62, 5064-5073
Synthesis of a bicyclo[5.3.1]undecene by a facile domino enyne cross-metathesis/IMDA.
Kaliappan, Krishna P.; Ravikumar, Velayutham; Pujari, Sandip A.
Tetrahedron Lett., 2006, 47, 981-984
Synthesis of [6,n] cis-fused ring compounds via Cr-mediated dearomatization-ring-closing metathesis.
Kuendig, E. Peter; Bellido, Alejandro; Kaliappan, Krishna P.; Pape, Andrew R.; Radix, Sylvie.
Org. Biomol. Chem., 2006, 4, 342-351
A facile domino metathetic route to a thapsigargin skeleton.
Kaliappan, Krishna P.; Nandurdikar, Rahul S.
Org. Biomol. Chem., 2005, 3, 3613-3614
Design and synthesis of novel oxa-bridged isoxazolidines and 1,3-aminoalcohols.
Kaliappan, Krishna P.; Das, Prasanta; Kumar, Nirmal.
Tetrahedron Lett., 2005, 46, 3037-3040
Design and synthesis of novel sugar-oxasteroid-quinone hybrids.
Kaliappan, Krishna P.; Ravikumar, Velayutham.
Org. Biomol. Chem., 2005, 3, 848-851
Efficient metathesis route to the B-ring of eleutherobin and other medium-sized cyclic ethers.
Kaliappan, Krishna P.; Kumar, Nirmal.
Tetrahedron, 2005, 61, 7461-7469
Recent advances in cascade enyne/RCM in organic synthesis.
Kaliappan, Krishna P.
Lett. Org. Chem., 2005, 2, 678-686
A cascade enyne/ring closing metathesis approach to angularly fused dioxatriquinanes.
Kaliappan, Krishna P.; Nandurdikar, Rahul S.
Chem. Commun. (Cambridge, U. K.), 2004, , 2506-2507
An expedient enyne metathesis approach to dysidiolide.
Kaliappan, Krishna P.; Gowrisankar, Parthasarathy.
Tetrahedron Lett., 2004, 45, 8207-8209
Synthesis based on cyclohexadienes. 37. Synthetic studies towards the nor-triterpene pfaffic acid: synthesis of DEF ring fragment via tandem radical cyclization rearrangement reactions.
Biju, Purakkattle. J.; Kaliappan, K.; Rao, G. S. R. Subba.
ARKIVOC (Gainesville, FL, U. S.), 2004, , 37-45
A ring-closing metathesis approach to a synthesis of the B ring of eleutherobin.
Kaliappan, Krishna P.; Kumar, Nirmal.
Tetrahedron Lett., 2003, 44, 379-381
Combinatorial discovery of two-photon photoremovable protecting groups.
Pirrung, Michael C.; Pieper, Wolfgang H.; Kaliappan, Krishna P.; Dhananjeyan, Mugunthu R.
Proc. Natl. Acad. Sci. U. S. A., 2003, 100, 12548-12553
Efficient access to fused ring compounds via dearomatization/ring-closing metathesis.
Kuendig, E. Peter; Bellido, Alejandro; Kaliappan, Krishna P.; Pape, Andrew R.; Radix, Sylvie.
Synlett, 2003, , 2407-2409
Dipolar Cycloaddition of Rhodium-Generated Carbonyl Ylides with p-Quinones.
Pirrung, Michael C.; Kaliappan, Krishna P.
Org. Lett., 2000, 2, 353-355
Synthesis based on cyclohexadienes. Part 34. A tandem cationic rearrangement-ene cyclization route to 2-pupukeanone.
Biju, P. John; Kaliappan, Krishna; Laxmisha, M. S.; Subba Rao, G. S. R.
Perkin 1, 2000, , 3714-3718
Transition-Metal-Mediated Dearomatization Reactions.
Pape, Andrew R.; Kaliappan, Krishna P.; Kuendig, E. Peter.
Chem. Rev. (Washington, D. C.), 2000, 100, 2917-2940
Synthesis based in cyclohexadienes. Part 22. Formal syntheses of patchouli alcohol and norpatchoulenol.
Kaliappan, Krishna P.; Subba Rao, G. S. R.
J. Chem. Soc., Perkin Trans. 1, 1997, , 1385-1389
Synthesis based on cyclohexadiene. 19. A new total synthesis of 2-pupukeanone.
Kaliappan, K.; Subba Rao, G. S. R.
Tetrahedron Lett., 1997, 38, 2185-2186
Synthesis based on cyclohexadienes. Part 23. Total synthesis of 5-epi-pupukean-2-one.
Kaliappan, Krishna; Subba Rao, G. S. R.
J. Chem. Soc., Perkin Trans. 1, 1997, , 3387-3392
Synthesis based on cyclohexadienes. Part 24. A new total synthesis of pupukean-2-one and a facile entry to copa and ylanga type sesquiterpene skeletons.
Kaliappan, Krishna; Subba Rao, G. S. R.
J. Chem. Soc., Perkin Trans. 1, 1997, , 3393-3400
Synthesis based on cyclohexadienes. 18. An expedient route to the preparation of key intermediates for the total synthesis of aphidacolin, stemodin and oryzalexin S.
Kaliappan, K.; Subba Rao, G. S. R.
Tetrahedron Lett., 1996, 37, 8429-8430
Tandem 5-exo-trig allyl and 3-exo-trig radical cyclization and rearrangement to copa and ylanga type sesquiterpene skeleton.
Kaliappan, K.; Subba Rao, G. S. R.
Chem. Commun. (Cambridge), 1996, , 2331-2332