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19 results on '"Guda A"'

1. ChemInform Abstract: 10-Camphorsulfonic Acid ((.+-.)-CSA) Catalyzed Facile One-Pot Synthesis of a New Class of 2,5-Disubstituted 1,3,4-Oxadiazoles

Author

Siva Nagi Reddy Mule, Dinneswara Reddy Guda, Sailaja Kumari Battula, Ganapathi Velupula, and Hari Babu Bollikolla

Subjects
chemistry.chemical_classification, chemistry, Organocatalysis, Carboxylic acid, One-pot synthesis, Organic chemistry, General Medicine, 10-camphorsulfonic acid, Catalysis
Abstract

The title compounds (III)/(VI) are obtained by CSA-catalyzed reaction of carboxylic acid hydrazides with different carboxylic acid chlorides.

Published
2015
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2. ChemInform Abstract: Synthesis, Antioxidant, and Cytotoxic Activities of N-Azole Substituted Thiomorpholine Derivatives

Author

Narra Siva Krishna, Venkatapuram Padmavathi, P. V. R. Reddy, Paturu Kondaiah, Adivireddy Padmaja, and Guda Mallikarjuna Reddy

Subjects
chemistry.chemical_classification, chemistry.chemical_compound, Thiomorpholine, Antioxidant, Derivative (finance), Chemistry, medicine.medical_treatment, medicine, Cytotoxic T cell, Azole, General Medicine, Ascorbic acid, Medicinal chemistry
Abstract

New thiomorpholine derivative (Va) exhibits radical scavenging activity greater than the standard ascorbic acid.

Published
2014
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3. ChemInform Abstract: Synthesis and Antioxidant Activity of Styrylsulfonylmethyl 1,3,4-Oxadiazoles, Pyrazolyl/Isoxazolyl-1,3,4-oxadiazoles

Author

Adivireddy Padmaja, Venkatapuram Padmavathi, Guda Mallikarjuna Reddy, Thandaiah Krishna Tilak, Chippada Appa Rao, and Akkarapalli Muralikrishna

Subjects
Antioxidant, Chemistry, viruses, medicine.medical_treatment, education, medicine, virus diseases, Organic chemistry, General Medicine, biochemical phenomena, metabolism, and nutrition, Ascorbic acid, humanities
Abstract

Compound (IIIb) is found to exhibit slightly higher antioxidant activity than the standard ascorbic acid.

Published
2014
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4. ChemInform Abstract: Syntheses and anti-Allergic Activity of 2-((Bis(trimethylsilyl)methylthio/methylsulfonyl)methyl) -5-aryl-1,3,4-oxadiazoles

Author

Min-Woo Lee, Tack-Joong Kim, Dinneswara Reddy Guda, Sae-Jin Park, and Myong Euy Lee

Subjects
chemistry.chemical_compound, Trimethylsilyl, chemistry, Aryl, Anti allergy, General Medicine, Medicinal chemistry
Abstract

Conveniently obtained sila-substituted 1,3,4-oxadiazoles (VI) and (VII) show variable extent of antiallergic activity.

Published
2013
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6. ChemInform Abstract: Trimethylsilyl Isothiocyanate (TMSNCS): An Efficient Reagent for the One-Pot Synthesis of Mercapto-1,2,4-triazoles

Author

Myong Euy Lee, Dinneswara Reddy Guda, Tengjiao Wang, and Hyeon Mo Cho

Subjects
chemistry.chemical_compound, chemistry, Trimethylsilyl, Reagent, Isothiocyanate, One-pot synthesis, Triazole derivatives, Organic chemistry, General Medicine
Abstract

A mild, convenient, and efficient one-pot synthesis of mercapto-1,2,4-triazoles is described. Various hydrazides efficiently reacted with trimethylsilyl isothiocyanate (TMSNCS) under basic condition to give mercapto-1,2,4-triazoles in high yields.

Published
2013
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7. ChemInform Abstract: Synthesis and Antimicrobial Studies of Pyrazolyl Oxadiazoles and Thiadiazoles

Author

Sanapalli Nagi Reddy, Adivireddy Padmaja, Venkatapuram Padmavathi, B. C. Venkatesh, and Guda Dinneswara Reddy

Subjects
biology, Chemistry, education, General Medicine, Antimicrobial, biology.organism_classification, Combinatorial chemistry, humanities, Thiadiazoles, mental disorders, otorhinolaryngologic diseases, sense organs, Antibacterial activity, Bacteria
Abstract

Compounds (VIIa) and (VIIc) exhibit excellent antibacterial activity against Gram-positive bacteria and good activity against Gram-negative bacteria.

Published
2012
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8. ChemInform Abstract: Synthesis and Antimicrobial Activity of Pyrazolyl 1,3,4-Oxadiazoles

Author

Venkatapuram Padmavathi, Gali Sudhakar Reddy, Guda Dinneswara Reddy, and Thalari Payani

Subjects
Chemistry, Moiety, High activity, heterocyclic compounds, General Medicine, Antimicrobial, Antimicrobial screening, Combinatorial chemistry
Abstract

The pyrazolyl oxadiazoles are synthesized from arylsulfonylacetic acid methyl ester and benzylsulfonylacetic acid methyl ester. Preliminary antimicrobial screening of the compounds showed that bis heterocycles with a chloro-substituted benzyl moiety exhibited high activity.

Published
2010
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10. ChemInform Abstract: Michael Adducts of Vinyl Sulfones - Source for Thiadiazoles, Oxadiazoles and Triazoles

Author

Venkatapuram Padmavathi, Gali Sudhakar Reddy, and Guda Dinneswara Reddy

Subjects
Thiadiazoles, Chemistry, Triazole derivatives, Organic chemistry, General Medicine, Adduct
Abstract

A new and novel five membered heterocycles thiadiazoles, oxadiazoles and triazoles were prepared from methyl 4-arylsulfonyl-3-arylbutyrate and methyl 4-arylmethanesulfonyl-3-arylbutyrate.

Published
2009
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