List of Publications 1. Three-component, one-pot synthesis of benzo[6,7]cyclohepta[1,2-b]pyridine derivatives under catalyst free conditions and evaluation of their anti-inflammatory activity. Lingaiah Nagarapu*, Yasodakrishna Sajja, Hanmanth Reddy V, Rajashaker Bantu et. al., Bioorg. Med. Chem., 2015, in press. 2. Synthesis and evaluation of anti proliferative activity of novel quinazolin-4(H)-one derivatives. Lingaiah Nagarapu*, R. Venkatesh, K. Suresh, S. Janardhan, Nishanth Jain, Rajashaker Bantu. Med. Chem. Res., 2015, in press. 3. Total synthesis of Xestoaminol C from D-glucose. Lingaiah Nagarapu*, V. Hanmanth Reddy, S. Yasodakrishna, Rajashaker Bantu. Curr. Org. Chem., 2015, 19(20), 2040-2045. 4. Design and Synthesis of 3-(3-((9H-carbazol-4-yl)oxy)-2-hydroxypropyl)-2phenylquinazolin-4(3H)-one derivatives to induce ACE inhibitor activity. Lingaiah Nagarapu*, Venkatesh Raminei, Rajashaker Bantu et. al., Eur. J. Med. Chem., 2015, 96, 22-29. 5. Synthesis and evaluation of benzosuberone embedded with 1, 3, 4-oxadiazole, 1, 3, 4thiadiazole and 1, 2, 4-triazole moieties as new potential anti proliferative agents. Lingaiah Nagarapu*, Yadagiri Bandi, Rajashaker Bantu et. al., Bioorg. Med. Chem., 2015, 25, 2220-2225. 6. Luotonin-A based Quinazolinones cause apoptosis and senescence via HDAC inhibition and activation of tumor suppressor proteins in HeLa cells. Lingaiah Nagarapu*, Venkatesh Raminei, Rajashaker Bantu et. al., Eur. J. Med. Chem., 2015, 94, 87-101. 7. A stereoselective approach for the total synthesis of (-)-tadanalactam from acetonideD-glucose. Lingaiah Nagarapu, Saidulu Konda, Bhaskar K, D. M. Akkewar*, Tetrahedron Lettrs, 2015, 56, 834-836. 8. Synthesis and antimicrobial activity of novel Benzoxazine Sulfonamide Derivatives. Lingaiah Nagarapu, Saidulu Konda, Rajashaker Bantu, D. M. Akkewar*, et. al., Bioorg. Med. Chem., 2015, 25 (7), 1643-1646. 9. A simple Approach to the One-Pot Three Component Synthesis of 4H-pyrimido [2,1b] benzothiazole Derivatives Using Polyethylene Glycol (PEG-400). Lingaiah Nagarapu*, R. Prabhakar, Bandi Yadagiri, Rajashaker Bantu et. al., Letters in Org. Chem., 2015, 12, 197-204. 10. Rational design, synthesis and anti-proliferative evaluation of novel 1,4-benzoxazine[1,2,3]triazole hybrids. Lingaiah Nagarapu*, Rajitha Bollu, Rajashaker Bantu et. al., Eur. J. Med. Chem., 2015, 89, 138-146. 11. Rational design, synthesis and anti-proliferative evaluation of novel benzosuberone tethered with hydrazide-hydrazones. Lingaiah Nagarapu*, Yadagiri Bandi, Rajashaker Bantu et. al., Bioorg. Med. Chem. Lettrs, 2014, 24, 5041-5044. 12. A convenient approach to total synthesis of synargentolide-B from L-ascorbic acid and D-ribose. Lingaiah Nagarapu* et. al., Tetrahedron Lettrs, 2014, 55, 3087-3089. 13. Synthesis of novel building blocks of benzosuberone bearing coumarin moieties and their evaluation as potential anticancer agents. Lingaiah Nagarapu*, Yadagiri Bandi, Rajashaker Bantu et. al., Eur. J. Med. Chem., 2014, 79, 260-265. 14. A facile and efficient synthesis of quinaxalines from phenacyl bromides and ortho phenylenedimine promoted by Zirconium Tungstate. Lingaiah Nagarapu*, Jyothsna Devi Palem, Ramakrishna Reddy A, Rajashaker Bantu. Organic Chemistry: Current Research, 2014, S4, DOI.Org./10.4172/2161-0401.S4-001 15. Efficient Synthesis and Resolution of Novel 2-(hydroxymethyl)-7,8-dihydro-1Hindeno[5,4-b]furan-6(2H)-one by Lipase Pseudomonas cepacia. Lingaiah Nagarapu*, V. Hanumanth Reddy, Yashodakrishna Sajja, Rajashaker Bantu, R. Jagadeesh, Tetrahedron: Asymmetry, 2014, 25, 578-582. 16. Synthesis of novel building blocks of benzosuberone bearing 2,4-thiazolidenone moieties as potential anticancer agents. Lingaiah Nagarapu*, Yadagiri Bandi, Rajashaker Bantu et. al., Eur. J. Med. Chem., 2014, 71, 91-97. 17. Synthesis of Novel Benzo[4,5]thiazolo[1,2-a]pyramidine-3-carboxylate Derivatives and Biological Evaluation as Potential Anticancer. Lingaiah Nagarapu*, Satheesh Varma, Rajashaker Bantu et. al., Eur. J. Med. Chem., 2013, 69, 817-822. 18. A simple, convenient one-pot synthesis of 1, 2, 4-triazolo [5,1-b] quinazolin-8(4H)-one and derivatives by using molecular iodine. Lingaiah Nagarapu* et. al., Tetrahedron Lettrs, 2013, 54, 2480-2483. 19. Synthesis of novel building blocks of 1H-pyrrolo[3,4-b]quinolin-3(2H)-one and evaluation of their antitumor activity. Lingaiah Nagarapu*, H. K. Gaikwad, Sheeba Rani Manikonda, Rajashaker Bantu, Krishna Madhuri Manda, Shasi Vardhan Kalivendi. Med. Chem. Res., 2013, 22(1), 165-174. 20. A convenient approach for the one-pot three-component synthesis of triheterocyclic 4H-pyrimido[2,1-b]benzothiazole derivatives using TBAHS. Lingaiah Nagarapu*, H. K. Gaikwad, Jyothsna Devi Palem, Ramineni Venkatesh, Rajashaker Bantu.. Syn. Comm. 2013, 43, 93-104. 21. Total synthesis of Sapinofuranone A from D-ribose. Lingaiah Nagarapu*, Shukla Chary Karnakanti, Rajashaker Bantu. Tetrahedron, 2012, 68(29), 5829-5832. 22. TBAHS-catalyzed synthesis of dihydroquinazolinoquinoline: An efficient and practical synthesis of naturally occurring alkaloids Luotonin A, B, and E. Lingaiah Nagarapu*, H. K. Gaikwad, Rajashaker Bantu. SYNLET, 2012, 23(12), 1775-1778. 23. Electrospray Ionization Tandem Mass Spectrometry (ESI MS/MS) of pyrazole derivatives. C. Purna Chander, H. K. Gaikwad, G. Raju, Lingaiah Nagarapu*, R. Srinivas*. Rapid Communs in Mass Spectrometry, 2012, 26, 207-214. 24. Synthesis of 1–oxindole--hydroxyphosphonates under catalyst free conditions using polyethylene glycol (PEG-400) as an efficient and recyclable reaction medium. Lingaiah Nagarapu*, Raghu M, Nikhil Kumar U, Venkateswarlu P, Rajashaker Bantu. Tetrahedron Lettrs, 2012, 53, 1699-1700. 25. Lewis acid assisted Olefin Cross-Metathesis reaction: An efficient approach for the synthesis of pyrroloquinolinone-glycosidic based analogues of (+)-Varitriol. Lingaiah Nagarapu*, Hanmanth. K. Gaikwad, Rajashaker Bantu, C. Ganesh Kumar, P. Sujitha. Tetrahedron Lettrs, 2012, 53, 1287-1291. 26. An efficient, high yield protocol for the one-pot synthesis of benzopyran derivatives catalyzed by p-TSA in aqueous media. Lingaiah Nagarapu*, et al., Synthetic Commns., 2012, 42, 967-974. 27. Synthesis of (2S,4S)-4-hydroxyproline from D-Glucose. Lingaiah Nagarapu*, Gopal Paturi, Synthetic Commns., 2012, 42, 1278-1287. 28. Molecular iodine catalyzed synthesis of 1,2,3,6-tetrahydropyrimidines Lingaiah Nagarapu*, et al., Synthetic Commns., 2012, 42(14), 2131-2138. 29. Tin (II) chloride mediated one-pot, three-component synthesis of 3,4,5-substituted furan-2(5H)-ones. Lingaiah Nagarapu*, et al., Synthetic Commns., 2012, 42(14), 2139-2148 30. Total synthesis of (+)-Varitriol via a symmetrical furanose diol as the key intermediate. Lingaiah Nagarapu*, Venkateswarlu Paparaju, Apuri Satyender, Rajashaker Bantu. Tetrahedron Lettrs, 2011, 52, 7075-7078. 31. Ployethylene glycol (PEG-400) as an efficient and recyclable reaction medium for onepot synthesis of N-substituted azepines under catalyst-free conditions. Lingaiah Nagarapu*, et al. SYNLETT, 2011, No. 18, 2730-2732. 32. 3-O-Acyl triggered tandem Lewis acid catalyzed intermolecular cyclization of diacetone glucose derivatives to 5-O-acyl-3,6-anhydro-D-glucose. Lingaiah Nagarapu, et al. Tetrahedron letters, 2011, 52, 4854-4856. 33. Chemoenzymatic Synthesis with Lipase Catalyzed Resolution and Evaluation of Antitumor Activity of (R/S)-2-[2-hydroxy-3-(4-phenylpiperazin-1-yl)propyl]-1Hpyrrolo[3,4-b]quinolin-3(2H)-one. Lingaiah Nagarapu*, et al. Euro. J. Med. Chem., 2011, 44, 2152-2156. 34. Ployethylene glycol (PEG-400) as an efficient and recyclable reaction medium for onepot synthesis of polysubstituted pyrroles under catalyst-free conditions. Lingaiah Nagarapu, et al. Tetrahedron letters, 2011, 52, 3401-3404. 35. Synthesis and Anti-inflammatory Activity of Some Novel 3-Phenyl-N-[3-(4Phenylpiperazin-1yl)Propyl]-1H-Pyrazole-5-Carboxamide Derivatives Lingaiah Nagarapu*, et al. Bioorg. Med. Chem. Letts. 2011, 21, 4138-4140. 36. Tin(II)chloride catalyzed synthesis of pyranoquinolines, phenanthridinone and phenanthridine derivatives Lingaiah Nagarapu*, et al. Eur. J. Chem. 2011, 2, 260265. 37. Synthesis of annulated pyrroles; Condensation of aldoes sugars, aryl amines and 1,3diones using TBAB. Lingaiah Nagarapu*, SYNTHESIS, 2010, 3374-3378. 38. Synthesis and cytotoxicity evaluation of 1-[3’-(9H-carbazol-4-yloxy)-2’-hydroxy propyl]-3-aryl-1H-pyrazole-5-carboxylic acid derivatives. Lingaiah Nagarapu* et al., Euro. J. Med. Chem., 2010, 45, 4720-4725. 39. Polyethylene glycol (PEG-400) mediated synthesis of quinoxalines. Lingaiah Nagarapu* et al., Euro. J. Chem., 2010, 1(3), 228-231 40. New and convenient synthesis of 1-amino-1-phenylbutane from n-butyl benzene. Lingaiah Nagarapu*, Satyender Apuri, Org. Prep. Proce. Int., 2009, 41, 243-247. 41. Imino Diels-Alder reactions: SnCl2. 2H2O catalyzed highly efficient one-pot Synthesis of Pyranoquinolines, phenanthridinone and Phenanthridine derivatives. Lingaiah nagarapu*, Rajashaker Bantu, M. Hari Babu, J. Heterocyclic Chem., 2009, 48, 728731. 42. Synthesis and antimicrobial activity of novel analogues of Trifenagrel. Lingaiah Nagarapu*, Aneesa, A. Satyender, J. Heterocyclic Chem., 2009, 46, 195-199. 43. TMCl-Mediated one-pot, three-component synthesis of 2H-Indazolo[2,1]b]naphthalazine-triones. Lingaiah Nagarapu*, Rajashaker Bantu. J. Heterocyclic Chem., 2009, 48, 728-731. 44. FeCl3 in ethanol/water: Highly efficient catalytic system for the synthesis of Garcia Gonzalez polyhydroxyalkyl- and C-glycosylfurans from unprotected sugar aldoses, Lingaiah Nagarapu*, Supriya, Satyender Apuri, Rajashaker Bantu, SYNTHESIS, 2009, 2278-2282. 45. Potassium dodecatungsto Cobaltate trihydrate : A new heterogeneous catalyst for the synthesis of homoallylic alcohols and amines. Lingaiah Nagarapu*, Gopal Paturi, A. Satyender. Synthetic Commns., 2009, 39, 355-365. 46. Synthesis of novel analogues of (+) varitriol via olefin cross-metathesis reaction. Lingaiah Nagarapu*, Venkateswarlu Paparaju, Apuri Satyender, Bioorg. Med. Chem. Lettrs., 2008, 18, 2351-2354. 47. Potassium dodecatungstocobaltate trihydrate (K5CoW12O40.3H2O) catalyzed synthesis of 2,2’-spirobi (4-aryl-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydrochromans. Lingaiah Nagarapu*, Rajashaker Bantu, N. Vijaya Kumari, J. Pharm. & Chem., 2008, 2(2), 102-105. Synthesis and antimicrobial activity of novel C-linked imidazole glycoconjugates. Lingaiah Nagarapu*, A. Satyender, B. Rajashaker, K. Srinivas, P. Rupa Rani, K.Radhika, G. Subhashini, Bioorg. Med. Chem. Lettrs., 2008, 18(3), 1167-1171. 48. 49. A facile synthesis of polyhydroquinoline via the Hantzsch reaction under solvent-free conditions using Potassium dodecatungstocobaltate trihydrate (K5CoW12O40.3H2O). Lingaiah Nagarapu*, G. Subhashini, A. Satyender, B. Rajashaker, K. Srinivas. Letters in Org. Chem., 2008, 5(1), 60-64. 50. Catalysis by ionic liquid: Highly efficient solvent-free synthesis of aryl-14Hdibenzo[a.j]xanthenes by molten terabutylammonium bromode under conventional heating and microwave irradiation. K. Srinivas*, M. Venu Chary, A. P. Rudra Das, V. N. V. Srinivas, Lingaiah Nagarapu, Catatalysis Communs., 2008, 9, 1575-1578. 51. SnCl2-2H2O-Catalyzed efficient synthesis of β-acetamido ketones and β-acetamido ketonesters under solvent-free conditions. Lingaiah Nagarapu*, Rajashaker Bantu, Rakesh Puttireddy, Appl. Catatalysis A : General, 2007, 332, 304-307. 52. An efficient synthesis of aryl-14H-dibenzo[a.f]xanthenes using NaHSO4.SiO2 or 5%WO3/ZrO2 as heterogeneous catalysts under conventional heating in solvent-free media. Lingaiah Nagarapu*, Md. Baseeruddin, A. Satyender, K. Srinivas, A. P. Rudra Das, Synthetic Communs., 2007, 37, 2519-2525. 53. An efficient synthesis of β-acetylamino ketones using silica supported sodium hydrogen sulfate as a heterogeneous catalyst. Lingaiah Nagarapu*, N. Vijaya Kumari, Synthetic Communs., 2007, 37, 2337-2341. 54. HClO4-SiO2 as a novel and recyclable catalyst for the synthesis of 2,4,6-triarylpyridines under solvent-free conditions. Lingaiah Nagarapu*, Aneesa, P. Rakesh, A. Satyender, Catatalysis Communs., 2007, 8, 1973-1976. 55. HClO4-SiO2 and PPA-SiO2 catalyzed efficient one-pot Knoevenagel condensation, Michael addition and cyclo-dehydration of dimedone and aldehydes in acetonitrile, aqueous and solvent-free conditions: Scope and limitations. K. Srinivas*, B. Rajashaker, Lingaiah Nagarapu, J. Mol. Cat. A: Chem., 2007, 269, 53-57. 56. HClO4-SiO2 as novel and recyclable catalyst for the one-pot synthesis of Homoallylic Amines. Lingaiah Nagarapu*, P. Venkateswarlu, P. Gopal, K. Srinivas, P. Rupa Rani, K. Radhika, J. Mol. Cat. A: Chem., 2007, 267, 53-56. 57. Potassium dodecatungstocobaltate trihydrate (K5CoW12O40.3H2O): A mild and efficient reusable catalyst for the one-pot synthesis of 1,2,4,5-tetrasubstituted imidazoles under conventional heating and microwave irradiation. Lingaiah Nagarapu*, A. Satyender, K. Srinivas. J. Mol. Cat. A: Chem., 2007, 266, 104-108. 58. Highly efficient, one-pot, solvent-free synthesis of tetrasubstituted imidazoles using HClO4-SiO2 as novel heterogeneous catalyst. K. Srinivas*, V. N. V. Srinivas, O. B. Dhanraj, Lingaiah Nagarapu, J. Mol. Cat. A: Chem., 2006, 266, 109-113. 59. Potassium dodecatungstocobaltate trihydrate (K5CoW12O40.3H2O) : A mild and efficient reusable catalyst for the synthesis of β-acetamido ketones under solvent-free conditions. Lingaiah Nagarapu*, K. Srinivas, Ch. Venkata Narsimhaji, A. Satyender, N. Vijaya Kumari. J. Mol. Cat. A: Chem., 2007, 264, 22-25. 60. Potassium dodecatungstocobaltate trihydrate (K5CoW12O40.3H2O) : A mild and efficient reusable catalyst for the synthesis of aryl-14H-dibenzo[a.j]xanthenes under conventional heating and microwave irradiation. Lingaiah Nagarapu*, K. Srinivas, M. Venu Chary, A. Satyender, Catatalysis Communs., 2007, 8, 1173-1177. 61. Montmorillonite K10 catalyzed efficient synthesis of Amidoalkyl Naphthols under solvent-free conditions. K. Srinivas*, V. N. V. Srinivas, Lingaiah Nagarapu, Catatalysis Communs., 2007, 8, 1857-1862. 62. Potassium dodecatungstocobaltate trihydrate (K5CoW12O40.3H2O) : A mild and efficient reusable catalyst for the synthesis of Amidoalkyl Naphthols in solution and under solvent-free conditions. Lingaiah Nagarapu*, Md. Baseeruddin, A. Satyender, K. Srinivas, Catatalysis Communs., 2007, 8, 1729-1734. 63. MCM-41 Catalyzed rapid and efficient one-pot synthesis of polyhydroquinolines via the Hantzsch reaction under solvent-free conditions. Lingaiah Nagarapu*, M. Dharani Kumari, N. Vijaya Kumari, Catatalysis Communs., 2007, 8, 1871-1875. 64. A new synthesis of 2-methyl-2,3-dihydrobenzo[b]furan-6,7,8,9-tetrahydro cycloheptene-5-one. N. Vijaya Kumari, Lingaiah Nagarapu*, Heterocyclic Commns., 2006, 12, No.3, 229. 65. A New Synthesis of (±)methyl-(hydrobenzo[b]furan-5-yl)-3-methylbutanoate. N. Vijaya Kumari, K. Shireesha, Lingaiah Nagarapu*, Heterocyclic Commns., 2006, Vol. 12, No. 2, 115. 66. Oxidative Deoximation with H2O2 and MCM-41” N. Vijaya Kumari, B. Balakrishna Reddy, Lingaiah Nagarapu*, Heterocyclic Commns., 2006, Vol. 12, No. 6, 407-410. 67. An efficient synthesis of 1,8-dioxo-octahydroxanthenes using heterogeneous catalysts, B. Das*, P. Thirupathi, K. R. Reddy, B. Ravikanth, Lingaiah Nagarapu, Catatalysis Communs., 2006, 7, 737-740. 68. A New Synthesis of (+) Methyl-(hydroxybenzo[b]furan-5-yl)-3- methylbutanoate. Lingaiah Nagarapu*, K. Shireesha, N. Vijaya Kumari, Heterocyclic Communs., 2006, 12, 115-117. 69. A New Synthesis of 2-Methyl-2,3-dihydrobenzo[b]furan-6,7,8,9tetrahydrocycloheptene-5-one. Lingaiah Nagarapu*, N. Vijaya Kumari, Heterocyclic Communs., 2006, 12, 229-231. 70. TMSCl mediated highly efficient one-pot synthesis of Octahydroquinazoline and 1,8dioxo-octahydroxanthene derivatives. K. Srinivas*, B. Rajashaker, Lingaiah Nagarapu, ARKIVOC, 2006, xvi, 136-148. 71. A simple synthesis of Nordihydroguaiaretic Acid and Its analogues. Jong-Keun Son, Seung ho Lee, Lingaiah Nagarapu, Yurngdong Jahng, Bull. Korean Chem. Soc ., 2005, 26(7),1117. 72. Benzothiazepine fused heterocycles VI: A convenient synthesis of 2-aryl-4-(4hydroxy-6-methyl-2-pyrone-3-yl)-2,3-dihydro-1,5-benzothiazepines using MCM-(41) zeolite. Lingaiah Nagarapu*, R Narender, R Suchetha, Heterocyclic Commns., 2003, 9(1), 35. 73. A convenient New Method for the Synthesis of 5H-benzocyclohepten-5-one-6,7,8,9terahydro-2-hydroxy. Lingaiah Nagarapu*, B. Srinivasulu, Heterocyclic Commns., 2003, 9(5), 479. 74. Enamine derivatives of 1,2,3,4,-tetrahydro-7,8,-dimethoxy-1-p-tosyl-1-benazepines-5one as potential anti-inflammatory agents. Lingaiah Nagarapu*, N. Venkateshwara Rao, Ind. J. Cemistry, 2002, 41B, 1086. 75. A facile method for the conversion of Oximes and Tosyl hydrazones to Carbonyl componds with Cr-MCM-41 Zeolite under Microwave Irradiation. Lingaiah Nagarapu*, Narendar Ravirala, Dattatray Akkewar, Synthetic Commns., 2002, 32(14), 2195. 76. Terachloropyridine: A New Reagent for the dehydration of Aldoximes under Microwave. Lingaiah Nagarapu*, Narendar Ravirala, Synthetic Commns., 2002, 32(15), 2391. 77. Synthesis of 5-(4-methyl phenylsulfonyl)-10-phenyl-6,7-dihydro-5Hbenzo[b]imidazo[2’,21’:2,3][1,3]thiazolo[4,5-d]azepin-5-yl.Lingaiah Nagarapu*, S. Kalyani, Heterocyclic Communications, 2001, 7, 33. 78. Benzothiazepine fused heterocycles IV: A convenient synthesis of benzo[b][1,5]thiazepines using MCM-41(H) zeolite. Lingaiah Nagarapu,* Narender Ravirala, D M Akkewar, Heterocyclic Commns., 2001, Vol. 7(3), 237. 79. New 1,4-Benzothiazine fused heterocycles V: Synthesis of 9H-thieno [3,2-b] thiazine and 4H-thiazolo [2,3-b][1,4] benzothiazine derivatives. Lingaiah Nagarapu,* Narender Ravirala, Heterocyclic Commns., 2001, Vol. 7(5), 433. 80. Synthesis of phenylimidazo thiazolo benzocycloheptene derivatives as potential antiinflammatory agents–IV. Lingaiah Nagarapu*, Venkateswarlu, Heterocyclic Communications, 2001, 7(6), 535. 81. Synthesis of 5-(4-methyl phenylsulfonyl)-10-phenyl-6,7-dihydro-5Hbenzo[b]imidazo[2’,21’:2,3][1,3]thiazolo[4,5-d]azepin-5-yl. Lingaiah Nagarapu*, Heterocyclic Communications, 2001, 7, 33. 82. Synthesis of phenylimidazo thiazolo benzocycloheptene derivatives as potential antiinflammatory agents –IV. Lingaiah Nagarapu*, N. Venkateswara Rao, Heterocyclic Communications, 2001, 7(1), 33. 83. A new Approach toward the stereoselective synthesis of Novel Benzo[b][1,5]oxazepines using MCM-41 (H) Zeolite. Lingaiah Nagarapu*, Narender Ravirala, N Venkateswara Rao, Enantiomer, 2001, Vol. 6(6), 339-342. 84. Benzothiazepine fused heterocycles IV: A convenient synthesis of benzo[b][1,5]thiazepines using MCM-41(H)zeolite. Lingaiah Nagarapu*, Narender Ravirala, D M Akkewar, Heterocyclic Commns., 2001, Vol. 7(3), 237. 85. New 1,4-Benzothiazine fused heterocycles V: Synthesis of 9H-thieno [3,2-b] thiazine and 4H-thiazolo [2,3-b][1,4] benzothiazine derivatives. Lingaiah Nagarapu*, Narender Ravirala, Heterocyclic Commns., 2001, Vol. 7(5), 433. 86. New 1,4-Benzoxazine Fused Heterocycles II: Synthesis of 5methylbenzo[b]imidazo[2’,1’:2,3][1,3]thiazolo[4,5-e]oxazine. Lingaiah Nagarapu*, Narendar Ravirala, Heterocyclic Communications, 2000, 6, 515. 87. Synthesis of some novel 1-aminomethyl-3-benzoylhydrazono-2-indolinones as potential antiinflammatory agents. Lingaiah Nagarapu*, Narendar Ravirala, Dattatray M Akkewar, Ind. J. Chemistry, 1998, 37B, 1254. 88. New 1,4-benzoxazine fused heterocycles: Synthesis of 9H-thieno [3,2-b][1,4]benzoxazine and 4H-thiazolo [2,3-b][1,4] benzoxazine derivatives. Linaiah Nagarapu*, Narendar Ravirala, Ind. J. Chemistry, 1998, 37B, 39. 89. Spectrophotometric determination of Isoproturon and Metoxuron in technical and formulation grade samples using Citric acid-Acetic anhydride reagent. K R K Raju*, S R K M Akella, N Lingaiah, A R K Reddy, U T Bhalerao, Ind. J. Chemical Technology, 1997, 4, 196. 90. Novel aromatic systems. 2,3-diacetoxy benzocyclohepten-5-one. Lingaiah Nagarapu, Venkateshwarlu Peesapati*, Ind. J. Chemistry. 1994, Vol. 33B, 962. 91. A simple route to trans-hexahydrohydrindane-2-one. Lingaiah Venkateshwarlu Peesapati*, Ind. J. Chemistry, 1993, Vol. 32B, 790. Nagarapu, 92. Thiopheno [3,2][1] Benzaipine, Benzo [3,4] cyclophepta [2,1] Thiophenes, Thiazolo [5,4-d][1] Benzazipine and Bezo [3,4] cyclohepta [2,1-d] Thiazoles. N Lingaiah, V Peesapati*, Org. Prep. Proce. Int., 1993, 25(5), 602. 93. Synthesis of furanobenzosuberones and Furanotetralones via Claisen Rearrangement. N Lingaiah, V Peesapati*, Org. Prep. Proce. Int., 199224(1), 27.