Vikas S. Gajare | Researchain

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Featured researches published by Vikas S. Gajare.

Carbohydrate Research | 2016

One pot oxidative dehydration - oxidation of polyhydroxyhexanal oxime to polyhydroxy oxohexanenitrile: A versatile methodology for the facile access of azasugar alkaloids

Sandip R. Khobare; Vikas S. Gajare; E. Vishnuvardhan Reddy; Rajender Datrika; Malavika Banda; Vidavalur Siddaiah; Sharad S. Pachore; Upadhya Timanna; Vilas H. Dahanukar; U. K. Syam Kumar

A unique oxidative dehydration-oxidation of polyhydroxy-oxime (7) to the corresponding ketonitrile (8) in one pot is reported for the first time in carbohydrate literature. Key ketonitrile intermediate (8) upon palladium hydroxide mediated cascade reaction afforded 1-deoxynojirimycin (DNJ) 1b in moderate diastereoselectivity. The cascade reaction involves the conversion of nitrile to amine, heteroannulation, reduction of the imine and subsequent debenzylation to furnish the azasugars. This oxidative dehydration-oxidation and reductive heteroannulation methodology is successfully utilized for the total synthesis of 1-deoxynojirimycin (1b), miglitol (2) and miglustat (3).

Tetrahedron Letters | 2009

C–N bond forming reaction under copper catalysis: a new synthesis of 2-substituted 5,6-dihydro-4H-pyrrolo[3,2,1-ij]quinolines

Mohosin Layek; A.V. Dhanunjaya Rao; Vikas S. Gajare; Dipak Kalita; Deepak Kumar Barange; Aminul Islam; K. Mukkanti; Manojit Pal

Tetrahedron | 2009

A highly effective synthesis of 2-alkynyl-7-azaindoles: Pd/C-mediated alkynylation of heteroaryl halides in water

Mohosin Layek; Vikas S. Gajare; Dipak Kalita; Aminul Islam; K. Mukkanti; Manojit Pal

Tetrahedron Letters | 2009

Pd/C–Cu in coupling-cyclization process: a general synthesis of 2-substituted 6-oxopyrrolo[3,2,1-ij]quinoline derivatives

Mohosin Layek; Vikas S. Gajare; Dipak Kalita; Aminul Islam; K. Mukkanti; Manojit Pal

Tetrahedron Letters | 2013

Diastereoselective total synthesis of 3,6-disubstituted piperidine alkaloids, (3R,6S)-epi-pseudoconhydrine and (3R,6R)-pseudoconhydrine

Sandip R. Khobare; Vikas S. Gajare; Subbarao Jammula; U. K. Syam Kumar; Y. L. N. Murthy

Tetrahedron-asymmetry | 2016

Stereoselective synthesis of (R)-(−) and (S)-(+)-phoracantholide I from (R)-(+)-γ-valerolactone

Rajender Datrika; Srinivasa Reddy Kallam; Sandip R. Khobare; Vikas S. Gajare; Muralikrishna Kommi; H. Rama Mohan; Vidavalur Siddaiah; T.V. Pratap

Tetrahedron Letters | 2015

Diastereoselective total synthesis of piperidine alkaloids: (2R,5R)-5-hydroxyhomopipecolic acid and (2R,5R,8R)-5-hydroxysedamine

Sandip R. Khobare; Vikas S. Gajare; Nagaraju Rajana; Rajender Datrika; K. Srinivasa Reddy; U. K. Syam Kumar; Vidavalur Siddaiah

Tetrahedron Letters | 2016

Concise and highly stereoselective syntheses of d-fagomine and 2-epi-fagomine

Srinivasa Reddy Kallam; Rajender Datrika; Sandip R. Khobare; Vikas S. Gajare; Nagaraju Rajana; H. Rama Mohan; J. Moses Babu; Vidavalur Siddaiah; T.V. Pratap

Tetrahedron Letters | 2016