Search Results - "Krishna, Gamidi Rama"

Interrupted CuAAC‐Thiolation for the Construction of 1,2,3‐Triazole‐Fused Eight‐Membered Heterocycles from O‐/N‐Propargyl derived Benzyl Thiosulfonates with Organic Azides by Jannapu Reddy, Raju, Waheed, Md, Haritha Kumari, Arram, Rama Krishna, Gamidi

“…A copper(I)‐catalyzed interrupted click‐sulfenylation of O‐/N‐propargyl benzyl thiosulfonates with organic azides has been disclosed. The unified…”
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K3PO4‐Promoted Cycloannulation of (E)‐β‐Iodovinyl Sulfones with ortho‐Hydroxy‐Chalcones/Cinnamates for the Synthesis of 2,3,4‐Trisubstituted 4H‐Benzopyran Derivatives by Jannapu Reddy, Raju, Jagadesh Kumar, Jangam, Rama Krishna, Gamidi

“…K3PO4‐mediated cycloannulation of (E)‐β‐iodovinyl sulfones with ortho‐hydroxy chalcones/ortho‐hydroxy cinnamates has been realized to access…”
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Total Synthesis of 12,13‐Dibenzyl‐banistenoside B and Analogs by Patil, Suhag S., Jachak, Gorakhnath R., Rama Krishna, Gamidi, Argade, Narshinha P., Reddy, D. Srinivasa

“…Banistenosides A and B possessing a unique “azepino(1,2‐a)tetrahydro‐β‐carboline” carbon framework were isolated from the stem of Banisteriopsis caapi and…”
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Mechanically Flexible Organic Crystals Achieved by Introducing Weak Interactions in Structure: Supramolecular Shape Synthons by Krishna, Gamidi Rama, Devarapalli, Ramesh, Lal, Garima, Reddy, C. Malla

“…Controlling mechanical properties of ordered organic materials remains a formidable challenge, despite their great potential for high performance mechanical…”
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Radical Cascade Cyclization of Unactivated Alkene-Tethered Indoles with Aryldiazonium Salt and Sodium Metabisulfite to Access Azo- and Sulfonylated-2,3-Dihyro‑1H‑pyrrolo[1,2‑a]indoles by Kumar, Pawan, Rai, Archana, Kumar, Manish, Rama Krishna, Gamidi, Das, Utpal

“…A method for the construction of heterocyclic scaffold 2,3-dihyro-1H-pyrrolo­[1,2-a]­indoles via arylsulfonyl radical-triggered cascade cyclization of…”
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Metal-Free One-Pot Domino Synthesis of Oxazolidinethione Derivatives of Quaternary Amino Acids from α‑Amino Esters and Aldehydes Using CS2 by Shinde, Dinesh R., Rama Krishna, Gamidi, Marelli, Udaya Kiran

“…We present a streamlined, metal-free, one-pot domino approach to efficiently synthesize oxazolidinethione derivatives containing substituted quaternary amino…”
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Stereoselective Total Synthesis of (±)-Pleurospiroketals A and B by Thorat, Sagar S, Rama Krishna, Gamidi, Kontham, Ravindar

“…A full account of our efforts toward the stereoselective total synthesis of sesquiterpenoid-derived natural products (±)-pleurospiroketals A and B is…”
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A Photoinduced Multicomponent Regioselective Synthesis of 1,4,5‐Trisubstituted‐1,2,3‐Triazoles: Transition Metal‐, Azide‐ and Oxidant‐Free Protocol by Sai Allaka, Bhargava, Basavoju, Srinivas, Rama Krishna, Gamidi

“…A transition metal‐ and azide‐free approach is explored to synthesize 1,4,5‐trisubstituted‐1,2,3‐triazoles under sunlight. The reaction proceeds via C−N and…”
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A New 1:1 Drug-Drug Cocrystal of Theophylline and Aspirin: Discovery, Characterization, and Construction of Ternary Phase Diagrams by Darwish, Shaza, Zeglinski, Jacek, Krishna, Gamidi Rama, Shaikh, Rahamatullah, Khraisheh, Majeda, Walker, Gavin M, Croker, Denise M

“…A new 1:1 drug-drug cocrystal of theophylline (THP) and aspirin (ASP) was successfully prepared by liquid assisted grinding, evaporative crystallization, and…”
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Remarkably Distinct Mechanical Flexibility in Three Structurally Similar Semiconducting Organic Crystals Studied by Nanoindentation and Molecular Dynamics by Devarapalli, Ramesh, Kadambi, Sourabh Bhagwan, Chen, Chun-Teh, Krishna, Gamidi Rama, Kammari, Bal Raju, Buehler, Markus J, Ramamurty, Upadrasta, Reddy, C. Malla

“…Distinct macroscopic mechanical responses of the three crystals of naphthalene diimide derivatives, 1Me, 1Et, and 1nPr, studied here are very intriguing…”
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Regioselective Synthesis of Benzannulated [5,6]-Oxaspirolactones via Cu(II)-Catalyzed Cycloisomerization of 2‑(5-Hydroxyalkynyl)benzoates by Thorat, Sagar S., Shimpi, Sagar P., Sambherao, Pooja I., Rama Krishna, Gamidi, Kontham, Ravindar

“…Spiroketals and oxaspirolactones are widely found in biologically active natural products, serving as important structural motifs. In this study, we present a…”
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Pd‐Catalyzed Annulation of β‐Iodovinyl Sulfones with 2‐Halophenols: A General Route for the Synthesis of 3‐Sulfonyl Benzofuran Derivatives by Reddy, Raju Jannapu, Kumar, Jangam Jagadesh, Kumari, Arram Haritha, Krishna, Gamidi Rama

“…The palladium‐catalyzed annulation between β‐iodovinyl sulfones and 2‐halophenols or 1‐bromo‐2‐naphthol or 2‐bromo‐3‐pyridinol is presented. The annulation…”
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Ready Access to Benzannulated [5,5]-Oxaspirolactones Using Au(III)-Catalyzed Cascade Cyclizations by Mankad, Yash, Thorat, Sagar S, Das, Pronay, Rama Krishna, Gamidi, Kontham, Ravindar, Reddy, D. Srinivasa

“…This work showcases an unprecedented Au­(III)-catalyzed cascade cyclization of 2-(4-hydroxy­alkynyl)­benzoates to access benzannulated [5,5]-oxaspirolactones…”
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Total synthesis and absolute configuration determination of Ktedonoketone, a benzenoid metabolite from Thermophilic bacterium by Dandawate, Monica, Choudhury, Rahul, Rama Krishna, Gamidi, Srinivasa Reddy, D.

“…[Display omitted] The successful total synthesis of both enantiomers of ktedonoketone allowed us to decipher an unambiguous assignment of absolute…”
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Visible‐Light‐Induced Radical Sulfonylative‐Cyclization Cascade of 1,6‐Enynol Derivatives with Sulfinic Acids: A Sustainable Approach for the Synthesis of 2,3‐Disubstituted Benzoheteroles by Haritha Kumari, Arram, Jagadesh Kumar, Jangam, Sharadha, Nunavath, Rama Krishna, Gamidi, Jannapu Reddy, Raju

“…Benzoheteroles are promising structural scaffolds in the realm of medicinal chemistry, but sustainable synthesis of 2,3‐difunctionalized benzoheterole…”
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The Relationship of Solid-State Plasticity to Mechanochromic Luminescence in Difluoroboron Avobenzone Polymorphs by Krishna, Gamidi Rama, Kiran, Mangalampalli S. R. N., Fraser, Cassandra L., Ramamurty, Upadrasta, Reddy, Chilla Malla

“…In solid‐state mechanochromic luminescence (ML) materials, it remains a challenge to establish the origin of fluorescence color changes upon mechanical action…”
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Design and synthesis of novel quinazolinyl-bisspirooxindoles as potent anti-tubercular agents: an ultrasound-promoted methodology by Allaka, Bhargava Sai, Basavoju, Srinivas, Madhu Rekha, Estharla, Sriram, Dharmarajan, Rama Krishna, Gamidi

“…The essential need for the potent anti-tubercular (anti-TB) agents with high selectivity and safety profile prompted us to synthesize a new series of…”
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Tuning of α‑Silyl Carbocation Reactivity into Enone Transposition: Application to the Synthesis of Peribysin D, E‑Volkendousin, and E‑Guggulsterone by Athawale, Paresh R, Zade, Vishal M, Rama Krishna, Gamidi, Reddy, D. Srinivasa

“…A reliable method for enone transposition has been developed with the help of silyl group masking. Enantio-switching, substituent shuffling, and Z-selectivity…”
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Origin of Optoelectronic Contradictions in 3,4-Cycloalkyl[c]-chalcogenophenes: A Computational Study by Masilamani, Ganesh, Krishna, Gamidi Rama, Debnath, Sashi, Bedi, Anjan

“…The planar morphology of the backbone significantly contributes to the subtle optoelectronic features of π-conjugated polymers. On the other hand, the…”
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Organocatalyzed [4 + 2] cycloaddition of α,β-unsaturated ketones and isatylidene malononitrile: accessing spiro[3-arylcyclohexanone]oxindole derivatives by Patil, Baliram R, Nichinde, Chandrakant B, Chaudhari, Suryakant S, Krishna, Gamidi Rama, Kinage, Anil K

“…Herein, we developed a series of compounds featuring spiro[3-arylcyclohexanone]oxindoles through Barbas [4 + 2] cycloaddition reactions between isatylidene…”
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