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Ram Sagar

Central Drug Research Institute

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Publication

Featured researches published by Ram Sagar.

Acta Crystallographica Section E: Crystallographic Communications | 2005

Neridienone A, a pregnane from the roots of Nerium oleander

Rishi Kumar; Ram Sagar; Arun K. Shaw; Prakas R. Maulik

In the title compound, 12β-hydroxyxadpregna-4,6,16-triene-3,20-dienone, C21H26O3, rings A and B are in almost half-chair conformations, ring C is in a chair conformation and ring D is in a 14α-envelope conformation. The A/B ring junction is quasi-trans, whereas the B/C and C/D ring junctions both approach trans character. The molxadecule as a whole is slightly convex towards the β side. Intra- and interxadmolecular hydrogen bonding, together with van der Waals interxadactions, plays a major role in the crystal structure.

Journal of Medicinal Chemistry | 2007

C-3 alkyl/arylalkyl-2,3-dideoxy hex-2-enopyranosides as antitubercular agents: synthesis, biological evaluation, and QSAR study.

Mohammad Saquib; Manish K. Gupta; Ram Sagar; Yenamandra S. Prabhakar; Arun K. Shaw; Rishi Kumar; Prakas R. Maulik; Anil N. Gaikwad; Sudhir Sinha; Anil Srivastava; Vinita Chaturvedi; and Ranjana Srivastava; Brahm S. Srivastava

Bioorganic & Medicinal Chemistry | 2005

CP-MLR directed QSAR studies on the antimycobacterial activity of functionalized alkenols—topological descriptors in modeling the activity

Manish K. Gupta; Ram Sagar; Arun K. Shaw; Yenamandra S. Prabhakar

Carbohydrate Research | 2004

Reinvestigation of the mercuration...demercuration reaction on alkylated glycals: an improved method for the preparation of 2,3-dideoxy-α, β-unsaturated carbohydrate enals

Ram Sagar; Rashmi Pathak; Arun K. Shaw

Chemical Reviews | 2013

Glycal-Derived δ-Hydroxy α,β-Unsaturated Aldehydes (Perlin Aldehydes): Versatile Building Blocks in Organic Synthesis

L. Vijaya Raghava Reddy; Vikas Kumar; Ram Sagar; Arun K. Shaw

Tetrahedron-asymmetry | 2006

Studies on epoxidation of enantiomerically pure 2,3-dideoxy hex-2-enitols: a convenient access to highly functionalized enantiomerically pure tetrahydrofuran derivatives

Ram Sagar; L. Vijaya Raghava Reddy; Arun K. Shaw

Carbohydrate Research | 2005

Diastereoselective annulation of 4-hydroxypyran-2H-ones with enantiopure 2,3-dideoxy-α,β-unsaturated sugar aldehydes derived from respective glycals

Ram Sagar; Pushpa Singh; Rishi Kumar; Prakas R. Maulik; Arun K. Shaw

Carbohydrate Research | 2006

An efficient synthesis of 2,3-dideoxy-α,β-unsaturated carbohydrate enals by mixed lewis acid (HfCl4 and ZnI2) catalyzed hydration of glycals

Mohammad Saquib; Ram Sagar; Arun K. Shaw

Tetrahedron-asymmetry | 2006

A consecutive approach towards the stereoselective synthesis of trisubstituted THF domains

Ram Sagar; L. Vijaya Raghava Reddy; Mohammad Saquib; Brijesh Kumar; Arun K. Shaw

Tetrahedron Letters | 2006

Reductive opening of glycal derived highly functionalized 2,3-epoxy-1-iodides with zinc dust : an efficient method for the synthesis of acyclic long chain polyhydroxylated terminal alkenic alcohols

L. Vijaya Raghava Reddy; Ram Sagar; Arun K. Shaw

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Arun K. Shaw

Central Drug Research Institute

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Brijesh Kumar

Aryabhatta Research Institute of Observational Sciences

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L. Vijaya Raghava Reddy

Central Drug Research Institute

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Prakas R. Maulik

Central Drug Research Institute

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Rishi Kumar

Central Drug Research Institute

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Mohammad Saquib

Central Drug Research Institute

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Manish K. Gupta

Central Drug Research Institute

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Rashmi Pathak

Central Drug Research Institute

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Yenamandra S. Prabhakar

Central Drug Research Institute

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Amitesh Omar

Aryabhatta Research Institute of Observational Sciences

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