K. Avasthi

发表

James M. Cook, J. Cook, J. C. Chang, 1981 .

Chemistry of 1,6-diazaphenalene. Reaction with alkylating and acylating agents

J. Cook, K. Avasthi, 1982 .

1H NMR and crystallographic evidence for tolerance of bulky electron withdrawing methanesulfonyl group on robustness of the U-motif in pyrazolo[3,4-d]pyrimidine core based ‘Leonard linker’ compounds and formation of plus (+) motif

P. Maulik, K. Avasthi, R. Raghunandan, 2007 .

Fine tuning of folded conformation by change of substituents: 1H NMR and crystallographic evidence for folded conformation due to arene interactions in pyrazolo[3,4-d]pyrimidine core based ‘propylene linker’ compounds

D. Rawat, Rishi Kumar, P. Maulik, 2005 .

Folded conformations due to arene interactions in dissymmetric and symmetric butylidene-linker models based on pyrazolo[3,4-d]pyrimidine, purine and 7-deazapurine.

K. Ravikumar, R. Kant, K. Avasthi, 2014, Acta crystallographica. Section C, Structural chemistry.

Conformational control due to arene interactions in dissymmetrical diaryl 2-methylenepropylidene both in solution and solid state

K. Ravikumar, R. Kant, K. Avasthi, 2014, Journal of Structural Chemistry.

Role of arene interactions and substituent effects in conformational (syn/anti) control of 1,2-diarylethanes

P. Maulik, R. Khanna, K. Ravikumar, 2012 .

An alternative to ‘propylene/Leonard linker’ for studying arene interactions in flexible pyrazolo[3,4-d]pyrimidine core based models both at molecular and supramolecular levels

P. Chattopadhyay, P. Maulik, K. Ravikumar, 2011 .

Unusual effect of bulky isopropyl group on robustness of the U-motif in pyrazolo[3,4-d]pyrimidine core based ‘Leonard linker’ compounds in comparison to methyl/ethyl group: A1H NMR and X-ray crystallographic study

P. Maulik, K. Avasthi, R. Raghunandan, 2008 .

Design and synthesis of pyrazolo [3,4 -d]pyrimidine and triazolo [4,5 -d]pyrimidine based dissymmetrical 'Leonard linker' compounds : 1H NMR and crystallographic evidence for folded conformation due to arene interactions

A. Tewari, Rishi Kumar, P. Maulik, 2007 .

Design and synthesis of pyrazolo[3,4-d]pyrimidine core based dissymmetrical ‘Leonard linker’ compounds: 1H NMR and crystallographic evidence for folded conformation due to arene interactions

P. Maulik, K. Avasthi, R. Raghunandan, 2006 .

An unusual conformational change in the folded trimethylene/leonard linker pyrazolo[3,4-d]pyrimidine analogue of the theophylline compound due to structural changes

A. Tewari, P. Maulik, R. Kant, 2015, Journal of Structural Chemistry.

Synthesis of 4-amino/hydroxy-6-methylthio-12-(2′,2′-diethoxyethyl)-1H/2H-pyrazolo[3,4-d]pyrimidines and their antiallergic activity☆

N. Garg, D. S. Bhakuni, R. C. Srimal, 1993 .

Synthesis , 1 H NMR and X-ray crystallographic studies of three isomeric bu-tylidene linker protophanes

K. Avasthi, Lakshmi Shuklaa, 2014 .

A copper(I)-catalyzed photobicyclization route to exo-1,2-polymethylene-and 7-hydroxynorbornanes. Nonclassical 2-bicyclo[3.2.0]heptyl and 7-norbornyl carbenium ion intermediates

R. G. Salomon, K. Avasthi, 1986 .

Reaction of dicarbonyl compounds with dimethyl 3-ketoglutarate. Influence of steric effects on success of the condensation

W. Han, J. Cook, K. Avasthi, 1982 .

Studies on Nucleosides: Part XXVIII1. Synthesis of 4-Amino (or Hydroxy)-6-Methylthio-1-(3′-Deoxy-β- D-ribofuranosyl)-1-H-pyrazolo[3, 4-d]Pyrimidines

D. S. Bhakuni, K. Avasthi, Sudha Jain, 1990 .

The reaction of organoboranes with lithium salts of trisylhydrazones of cycloalkanones followed by treatment with iodine.

A. Suzuki, K. Avasthi, T. Baba, 1983 .

Copper(I) catalysis of olefin photoreactions. 13. Synthesis of bicyclic vinylcyclobutanes via copper(I)-catalyzed intramolecular 2.pi. + 2.pi. photocycloadditions of conjugated dienes to alkenes

R. G. Salomon, K. Avasthi, Swadesh R. Raychaudhuri, 1984 .

Prostaglandin endoperoxides. 15. Asymmetric total synthesis of levuglandin E2

B. Levison, R. G. Salomon, K. Avasthi, 1984 .

Synthesis and reactions of 1-hydroxy-1-(pyridinyl)-2-propanones

K. Redda, A. Benderly, E. Knaus, 1980 .

Chemistry of 1,6-diazaphenalene. Reaction with alkylating and acylating agents

J. Cook, K. Avasthi, 1982 .

Pyrazolo[3,4-d]pyrimidinophanes: convenient synthesis of a new class of cyclophane and X-ray structure of the first representative.

A. Tewari, P. Maulik, R. Kant, 2009, Organic letters.

Synthesis and reactions of 1‐[1‐oxido‐2‐(3,4)‐pyridinyl]‐2‐methyloxiranes with nitrogen nucleophiles

E. Knaus, K. Avasthi, 1981 .

A [3.1.0]-Fused 2',3'-Modified β-d-Pyrazolo[3,4-d]pyrimidine Nucleoside

N. Garg, P. Maulik, D. S. Bhakuni, 1996 .

A (3.1.0)-Fused 2′,3′-Modified β-D-Pyrazolo(3,4-d)pyrimidine Nucleoside.

N. Garg, P. Maulik, D. S. Bhakuni, 1997 .

Regioselectivity of glycosylation reaction of 4,6-BIS(methylthio)-pyrazolo-[3,4-d] pyrimidine with D-xylofuranosyl- and D-glucofuranosyl sugars☆

N. Garg, K. Avasthi, Dewan S. Bhakuni, 1991 .

Diels–Alder cycloadditions of N-substituted-1,2-dihydropyridines with nitrosobenzene. Synthesis of 3-phenyl-2-oxa-3,6-diazabicyclo[2.2.2]oct-7-enes

C. Giam, E. Knaus, K. Avasthi, 1980 .

The reaction of iodine with vinyltrialkylborates derived from trialkylboranes and trisylhydrazones of methyl ketones. A new method for synthesis of 1,1-dialkylethenes

A. Suzuki, K. Avasthi, T. Baba, 1980 .

Studies on arene interactions in flexible pyrazolo[3,4-d]pyrimidine core based symmetrical ‘propylene/Leonard linker’ models: X-ray crystallographic evidence for disappearance of intramolecular stacking due to presence of chloro- or cyano-groups in place of methylsulfanyl or alkoxy substituents ☆

P. Maulik, K. Avasthi, R. Raghunandan, 2009 .

4,6-bis(methylsulfanyl)-1-(4-phenoxybutyl)-1H-pyrazolo[3,4-d]pyrimidine.

Ashoke Sharon, P. Maulik, Chandralata Bal, 2003, Acta crystallographica. Section C, Crystal structure communications.

A stacked pyrazolo[3,4-d]pyrimidine-based flexible molecule: the effect on stacking of a bulky isopropyl group in comparison with a methyl/ethyl group.

D. Rawat, Ashoke Sharon, P. Maulik, 2003, Acta crystallographica. Section C, Crystal structure communications.

Unusual molecular conformation in dissymmetric propylene-linker compounds containing pyrazolo[3,4-d]pyrimidine and phthalimide moieties.

Ashoke Sharon, P. Maulik, Chandralata Bal, 2003, Acta crystallographica. Section C, Crystal structure communications.

A stacked pyrazolo[3,4-d]pyrimidine-based flexible molecule: the effect of a bulky benzyl group on intermolecular stacking in comparison with methyl and ethyl groups.

A. Tewari, D. Rawat, Ashoke Sharon, 2002, Acta crystallographica. Section C, Crystal structure communications.

Intermolecular stacking in pyrazolo[3,4-d]pyrimidine-based pentamethylene-linked flexible molecules.

A. Tewari, Ashoke Sharon, P. Maulik, 2003, Acta crystallographica. Section C, Crystal structure communications.

1H NMR and X-ray crystallographic analysis of 1,2-bis(4,6-diethylthio-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethane and its ‘propylene linker’-analog: molecular recognition versus crystal engineering ☆

J. Howard, D. Rawat, P. Maulik, 2001 .

Synthesis of Stacked Compounds Based on Pyrazolo[3,4-d]pyrimidines as New Flexible Models for Studying Intramolecular Aromatic .pi±pi. Interactions (APPI).

D. Rawat, D. S. Bhakuni, K. Avasthi, 1999 .

A Convenient and General Synthesis of 1,ω-Bis(4,6-dimethylthio- 1H-pyrazolo(3,4-d)pyrimidin-1-yl)alkanes and Their Regioisomers.

D. S. Bhakuni, K. Avasthi, T. Chandra, 1996 .

Disappearance of inter- and intramolecular stacking due to one-atom addition in `propylene-linker' in a pyrazolo[3,4-d]pyrimidine-based flexible molecule

Ashoke Sharon, P. Maulik, K. Avasthi, 2002 .

A dimeric layered structure of a 4-oxo-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidine compound.

D. Rawat, P. Maulik, S. Sarkhel, 2002, Acta crystallographica. Section C, Crystal structure communications.

1,3-Bis(8-chlorotheophyllin-7-yl)propane: a molecule with no intramolecular stacking

D. Rawat, Ashoke Sharon, P. Maulik, 2001 .

A stacked pyrazolo[3,4-d]pyrimidine-based flexible molecule: the effect on stacking of an ethyl group in comparison with a methyl group.

P. Maulik, K. Avasthi, S. Aswal, 1998, Acta crystallographica. Section C, Crystal structure communications.

Nucleosides. Part 21. Synthesis of 1/2-Substituted-4-amino/hydroxy-6-methylthio-1H/2H-pyrazolo(3,4-d)pyrimidines as Analogs of Allopurinol and Their Antileishmanial Activity.

N. Garg, R. Pratap, D. S. Bhakuni, 1990 .

Disappearance of intramolecular stacking due to one-atom movement or increment of a 'propylene linker' in pyrazolo[3,4-d]pyrimidine-based flexible models.

D. Rawat, R. Jacobson, P. Maulik, 2000, Acta crystallographica. Section C, Crystal structure communications.