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5 results on '"Gupta, Sikha"'

4. Clinical, ultrasonographic and optical coherence tomography correlation of optic nerve head cupping in glaucoma patients

Author

Pujari, Amar, Swamy, Deepa, Selvan, Harathy, Agarwal, Divya, Sihota, Ramanjit, Gupta, Sikha, Gupta, Nikita, and Dada, Tanuj

Subjects
Optic nerve diseases -- Diagnosis -- Physiological aspects, Glaucoma -- Diagnosis -- Physiological aspects, Medical research, Tomography, Health
Abstract

Byline: Amar. Pujari, Deepa. Swamy, Harathy. Selvan, Divya. Agarwal, Ramanjit. Sihota, Sikha. Gupta, Nikita. Gupta, Tanuj. Dada Purpose: To ascertain if ultrasound (USG) B-scan examination of the optic nerve head [...]

Published
2019

5. Catalytic Aminium Radical-Cation Salt (Magic Blue)-Initiated S N 2-Type Nucleophilic Ring-Opening Transformations of Aziridines.

Author

Singh B, Kashyap S, Singh S, Gupta S, and Ghorai MK

Abstract

A simple and atom economic protocol for the construction of C-X/C-C bonds via catalytic aminium radical-cation salt (Magic Blue)-initiated S N 2-type nucleophilic ring-opening transformations of racemic and nonracemic aziridines with different hetero and carbon nucleophiles to afford various amino ethers, thioethers, and amines in up to 99% yield, and with perfect enantiospecificity for some substrates but reduced ee with others (for nonracemic aziridines), is developed. This aminium radical-cation salt-initiated, S N 2-type nucleophilic ring-opening strategy, along with various cyclization protocols, is employed to synthesize various biologically significant compounds.

Published
2024
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