The Experts below are selected from a list of 183 Experts worldwide ranked by ideXlab platform
Nilanjan Majumder - One of the best experts on this subject based on the ideXlab platform.
-
four component one pot synthesis of n alkyl 4 oxo 3 phenylhexahydro 4h spiro 1 3 dioxolo 4 5 4 5 furo 2 3 f 1 2 3 triazolo 1 5 a 1 4 diazepine 9 1 cyclohexane 6 carboxamide derivatives
Synthesis, 2014Co-Authors: B Subba V Reddy, Nilanjan MajumderAbstract:A four-component, six-center Ugi reaction of sugar azidoaldehyde, benzylamine, alkyl isocyanide, and Phenylpropiolic Acid has been developed to produce a novel class of hexahydro-4 H -spiro{[1,3]dioxolo[4′,5′:4,5]furo[2,3- f ][1,2,3]triazolo[1,5- a ][1,4]diazepine-9,1′-cyclohexane}-6-carboxamide derivatives in good yields with high selectivity. It is a one-pot two-step process affording sugar-derived triazolodiazepines starting from simple precursors. The stereochemistry of the products was confirmed by NMR and NOE studies.
-
Four-Component, One-Pot Synthesis of N-Alkyl-4-oxo-3-phenylhexahydro-4H-spiro{[1,3]dioxolo[4′,5′:4,5]furo[2,3-f][1,2,3]triazolo[1,5-a][1,4]diazepine-9,1′-cyclohexane}-6-carboxamide Derivatives
Synthesis, 2014Co-Authors: B. V. Subba Reddy, Nilanjan MajumderAbstract:A four-component, six-center Ugi reaction of sugar azidoaldehyde, benzylamine, alkyl isocyanide, and Phenylpropiolic Acid has been developed to produce a novel class of hexahydro-4 H -spiro{[1,3]dioxolo[4′,5′:4,5]furo[2,3- f ][1,2,3]triazolo[1,5- a ][1,4]diazepine-9,1′-cyclohexane}-6-carboxamide derivatives in good yields with high selectivity. It is a one-pot two-step process affording sugar-derived triazolodiazepines starting from simple precursors. The stereochemistry of the products was confirmed by NMR and NOE studies.
B Subba V Reddy - One of the best experts on this subject based on the ideXlab platform.
-
four component one pot synthesis of n alkyl 4 oxo 3 phenylhexahydro 4h spiro 1 3 dioxolo 4 5 4 5 furo 2 3 f 1 2 3 triazolo 1 5 a 1 4 diazepine 9 1 cyclohexane 6 carboxamide derivatives
Synthesis, 2014Co-Authors: B Subba V Reddy, Nilanjan MajumderAbstract:A four-component, six-center Ugi reaction of sugar azidoaldehyde, benzylamine, alkyl isocyanide, and Phenylpropiolic Acid has been developed to produce a novel class of hexahydro-4 H -spiro{[1,3]dioxolo[4′,5′:4,5]furo[2,3- f ][1,2,3]triazolo[1,5- a ][1,4]diazepine-9,1′-cyclohexane}-6-carboxamide derivatives in good yields with high selectivity. It is a one-pot two-step process affording sugar-derived triazolodiazepines starting from simple precursors. The stereochemistry of the products was confirmed by NMR and NOE studies.
M P S Ishar - One of the best experts on this subject based on the ideXlab platform.
-
cycloaddition of a 1 2 diaza 1 3 butadiene to Phenylpropiolic Acid an efficient route to pyridazinoquinolone derivatives
Tetrahedron Letters, 2004Co-Authors: Arun Kumar Padhy, Pratigyan Purohit, Mousumi Bardhan, C S Panda, M P S IsharAbstract:Abstract Diazocoupling of dihydroquinolin-4-ones with aryldiazonium nitrates gave the corresponding diazo derivatives, which undergo facile (4+2) cycloaddition reactions with Phenylpropiolic Acid to afford 2-aryl-4a-methyl-10-oxo-4-phenyl-2,4a,5,10-tetrahydropyridazino[4,3- b ]quinoline-3-carboxylic Acid derivatives 3 . However, with β-nitrostyrene a mixture of three isomeric products 4a – c was obtained.
Arun Kumar Padhy - One of the best experts on this subject based on the ideXlab platform.
-
cycloaddition of a 1 2 diaza 1 3 butadiene to Phenylpropiolic Acid an efficient route to pyridazinoquinolone derivatives
Tetrahedron Letters, 2004Co-Authors: Arun Kumar Padhy, Pratigyan Purohit, Mousumi Bardhan, C S Panda, M P S IsharAbstract:Abstract Diazocoupling of dihydroquinolin-4-ones with aryldiazonium nitrates gave the corresponding diazo derivatives, which undergo facile (4+2) cycloaddition reactions with Phenylpropiolic Acid to afford 2-aryl-4a-methyl-10-oxo-4-phenyl-2,4a,5,10-tetrahydropyridazino[4,3- b ]quinoline-3-carboxylic Acid derivatives 3 . However, with β-nitrostyrene a mixture of three isomeric products 4a – c was obtained.
B. V. Subba Reddy - One of the best experts on this subject based on the ideXlab platform.
-
Four-Component, One-Pot Synthesis of N-Alkyl-4-oxo-3-phenylhexahydro-4H-spiro{[1,3]dioxolo[4′,5′:4,5]furo[2,3-f][1,2,3]triazolo[1,5-a][1,4]diazepine-9,1′-cyclohexane}-6-carboxamide Derivatives
Synthesis, 2014Co-Authors: B. V. Subba Reddy, Nilanjan MajumderAbstract:A four-component, six-center Ugi reaction of sugar azidoaldehyde, benzylamine, alkyl isocyanide, and Phenylpropiolic Acid has been developed to produce a novel class of hexahydro-4 H -spiro{[1,3]dioxolo[4′,5′:4,5]furo[2,3- f ][1,2,3]triazolo[1,5- a ][1,4]diazepine-9,1′-cyclohexane}-6-carboxamide derivatives in good yields with high selectivity. It is a one-pot two-step process affording sugar-derived triazolodiazepines starting from simple precursors. The stereochemistry of the products was confirmed by NMR and NOE studies.