Search Results - "Kancharla, Pavan"

Influence of Anion-Binding Schreiner’s Thiourea on DMAP Salts: Synergistic Catalysis toward the Stereoselective Dehydrative Glycosylation from 2‑Deoxyhemiacetals by Ghosh, Titli, Mukherji, Ananya, Kancharla, Pavan K

“…Amines are used as additives to facilitate or increase the host–guest chemistry between the thiourea and the anions of Bronsted acids. However, we here…”
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The FAD2 Gene in Plants: Occurrence, Regulation, and Role by Dar, Aejaz A, Choudhury, Abhikshit R, Kancharla, Pavan K, Arumugam, Neelakantan

“…Vegetable oils rich in oleic acid are more desirable than oils rich in polyunsaturated and saturated fatty acids. The biological switch of oleic acid to…”
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Triple Role of Proton Sponge (DMAN) in the Palladium-Catalyzed Direct Stereoselective Synthesis of C‑Aryl Glycosides from Glycals by Pradhan, Priyanka, Moktan, Sangay, Biswas, Ashish, Das, Animesh, Lenka, Rajesh, Kancharla, Pavan K.

“…The triple role of 1,8-bis­(dimethylamino)­naphthalene (proton sponge) as a reductant, ligand precursor, and organic base in the palladium-catalyzed Heck-type…”
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Regio- and Stereoselective C‑Glycosylation of Indoles Using o‑[1‑(p‑MeO-Phenyl)vinyl]benzoates (PMPVB) as Glycosyl Donors under Brønsted Acid Catalysis by Halder, Suvendu, Addanki, Rupa Bai, Kancharla, Pavan K.

“…The alkene-based o-[1-(p-MeO-phenyl)­vinyl]­benzoates (PMPVB) donors that can be remotely activated under catalytic Brønsted acidic conditions have been…”
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Open‐Close Strategy toward the Organocatalytic Generation of 2‐Deoxyribosyl Oxocarbenium Ions: Pyrrolidine‐Salt‐Catalyzed Synthesis of 2‐Deoxyribofuranosides by Ghosh, Titli, Mukherji, Ananya, Kancharla, Pavan K.

“…The reaction of secondary amine salts with 2‐deoxy‐ribofuranoses under forcible conditions leads to the putative furanosyl oxocarbenium ion that is trapped…”
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Strained Ion Pair Interactions-Driven Anion-Assisted Concerted Addition of Ketoximes/Aldoximes and Hydroxamic Acids to Glycals by Pradhan, Priyanka, Biswas, Ashish, Rotta, Mahendra K. V., Kancharla, Pavan K.

“…Oximes and hydroxylamides are notable for their role as coupling partners in organic synthesis. However, their direct application as acceptors in…”
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Synthesis of chiral functional polyhydroxylated arenes via Mukaiyama aldol reaction from Perlin aldehydes by Halder, Suvendu, Moktan, Sangay, Sreeram, V, Kancharla, Pavan K

“…Functionalized aryl polyhydroxylated compounds could be of great synthetic value for natural product synthesis. However, the synthesis of such compounds…”
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Influence of Side Chain Conformation and Configuration on Glycosyl Donor Reactivity and Selectivity as Illustrated by Sialic Acid Donors Epimeric at the 7‑Position by Kancharla, Pavan K, Crich, David

“…Two N-acetyl 4O,5N-oxazolidinone-protected sialyl thioglycosides epimeric at the 7-position have been synthesized and their reactivity and stereoselectivity in…”
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Reductive Alkylation of Quinolines to N‑Alkyl Tetrahydroquinolines Catalyzed by Arylboronic Acid by Adhikari, Priyanka, Bhattacharyya, Dipanjan, Nandi, Sekhar, Kancharla, Pavan K, Das, Animesh

“…A boronic acid catalyzed one-pot tandem reduction of quinolines to tetrahydroquinolines followed by reductive alkylation by the aldehyde has been demonstrated…”
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C–H···Anion Interactions Assisted Addition of Water to Glycals by Sterically Hindered 2,4,6-Tri-tert-butylpyridinium Hydrochloride by Mukherji, Ananya, Kancharla, Pavan K

“…The conjugate acid of the bulky base 2,4,6-tri-tert-butylpyridine, under mild conditions, catalyzes the synthesis of silyl-protected 2-deoxy-hemiacetals and…”
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Sterically Strained Brønsted Pair Catalysis by Bulky Pyridinium Salts: Direct Stereoselective Synthesis of 2‑Deoxy and 2,6-Dideoxy-β-thioglycosides from Glycals by Mukherji, Ananya, Addanki, Rupa Bai, Halder, Suvendu, Kancharla, Pavan K

“…A sterically strained ionic Brønsted pair complex obtained from a sterically bulky base 2,4,6-tri-tert-butylpyridine and hydrochloric acid imbues unusual…”
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Glycosyl o‑[1‑(p‑MeO-Phenyl)vinyl]benzoates (PMPVB) as Easily Accessible, Stable, and Reactive Glycosyl Donors for O‑, S‑, and C‑Glycosylations under Brønsted Acid Catalysis by Halder, Suvendu, Addanki, Rupa Bai, Moktan, Sangay, Kancharla, Pavan K.

“…Methods suitable for the synthesis of both O- and S-glycosylations are relatively rare because commonly used promoters like halonium sources or gold catalysts…”
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TfO–···H–O–H Interaction-Assisted Generation of a Silicon Cation from Allylsilanes: Access to Phenylallyl Ferrier Glycosides from Glycals by Addanki, Rupa Bai, Halder, Suvendu, Kancharla, Pavan K

“…We demonstrate here that the strained and bulky protonated 2,4,6-tri-tert-butylpyridine (TTBPy) triflate salt serves as a mild and efficient organocatalyst for…”
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Sterically Hindered 2,4,6-Tri-tert-butylpyridinium Salts as Single Hydrogen Bond Donors for Highly Stereoselective Glycosylation Reactions of Glycals by Ghosh, Titli, Mukherji, Ananya, Kancharla, Pavan K

“…We demonstrate here that the strained and bulky protonated 2,4,6-tri-tert-butylpyridine salts serve as efficient catalysts for highly stereoselective…”
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Probing the Influence of Protecting Groups on the Anomeric Equilibrium in Sialic Acid Glycosides with the Persistent Radical Effect by Kancharla, Pavan K, Kato, Takayuki, Crich, David

“…A method for the investigation of the influence of protecting groups on the anomeric equilibrium in the sialic acid glycosides has been developed on the basis…”
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Dissecting the Influence of Oxazolidinones and Cyclic Carbonates in Sialic Acid Chemistry by Kancharla, Pavan K., Navuluri, Chandrasekhar, Crich, David

“…At a moment′s notice: Thermal equilibration of 1 and mass spectral analysis of sialyl phosphates suggest that the 4O,5N‐oxazolidinone and the 4,5‐O‐carbonate…”
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Exploiting the Strained Ion-Pair Interactions of Sterically Hindered Pyridinium Salts Toward S N 2 Glycosylation of Glycosyl Trichloroacetimidates by Addanki, Rupa Bai, Moktan, Sangay, Halder, Suvendu, Sharma, Madhur, Sarmah, Bikash K, Bhattacharyya, Kalishankar, Kancharla, Pavan K

“…We demonstrate here that strained and sterically hindered protonated 2,4,6-tri- -butylpyridinium (TTBPy) tetrafluoroborate, a crystalline, bench stable salt…”
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Exploiting the Strained Ion-Pair Interactions of Sterically Hindered Pyridinium Salts Toward SN2 Glycosylation of Glycosyl Trichloroacetimidates by Addanki, Rupa Bai, Moktan, Sangay, Halder, Suvendu, Sharma, Madhur, Sarmah, Bikash K., Bhattacharyya, Kalishankar, Kancharla, Pavan K.

“…We demonstrate here that strained and sterically hindered protonated 2,4,6-tri-tert-butylpyridinium (TTBPy) tetrafluoroborate, a crystalline, bench stable salt…”
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Expedient Synthesis of Core Disaccharide Building Blocks from Natural Polysaccharides for Heparan Sulfate Oligosaccharide Assembly by Pawar, Nitin J., Wang, Lei, Higo, Takuya, Bhattacharya, Chandrabali, Kancharla, Pavan K., Zhang, Fuming, Baryal, Kedar, Huo, Chang‐Xin, Liu, Jian, Linhardt, Robert J., Huang, Xuefei, Hsieh‐Wilson, Linda C.

“…The complex sulfation motifs of heparan sulfate glycosaminoglycans (HS GAGs) play critical roles in many important biological processes. However, an…”
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Influence of Various Silyl Protecting Groups on Stereoselective 2‑Deoxyrhamnosylation by Mukherji, Ananya, Rotta, Mahendra K. V., Sarmah, Bikash K., Kancharla, Pavan K.

“…The influence of various silyl protecting groups on 2-deoxyrhamnosylation using 2-deoxyrhamnosyl acetates, thioglycosides, and (p-methoxyphenyl)­vinylbenzoate…”
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