@article {46358,
	title = {Recursive partitioning analysis and anti-tubercular screening of 3-aminopyrazine-2-carbohydrazide derivatives},
	journal = {Letters in Drug Design \& Discovery},
	volume = {16},
	year = {2019},
	month = {APR},
	pages = {1264-1275},
	type = {Article},
	abstract = {<p>Background: Treating tuberculosis is a challenge due to the development of drug resistance. Hence, it is imperative to develop novel leads having high potency and efficacy to curb drug resistance. Methods: The present research work is focused on microwave-assisted synthesis of novel twenty-six 3-amino-N{\textquoteright}-benzylidenepyrazine-2-carbohydrazide derivatives (3a-z), where, lyophilization technique was used for isolation of the major intermediate, 3-aminopyrazin-2-carbohydrazide. All synthesized compounds were subjected for anti-tubercular screening against Mycobacterium tuberculosis H37Ra by using XTT Reduction Menadione Assay (XRMA) protocol. Results: Out of 26 synthesized compounds, four N{\textquoteright}-substitutedbenzaldehyde-3-amino-pyrazine-2-carbohydrazide derivatives viz. 3i, 3j 3v and 3z showed significant activity against M. tuberculosis H37Ra. The compounds 3i, 3j, 3v and 3z showed 99, 98, 92 and 87 \% inhibition respectively as compared to 94\% inhibition shown by the standard drug rifampicin. The MIC and IC50 values were in the range of 24.3-110 and 5.9-20.8 mu g/ml respectively. Conclusion: A classification model called Recursive Partitioning (RP) based on binary Quantitative Structure-Activity Relationship (QSAR) was derived for the establishment of structure-activity relationship (SAR). The predictions derived on the basis of RP model were found to be in agreement with anti-tubercular screening data.</p>
},
	keywords = {3-aminopyrazine, anti-tubercular activity, Carbohydrazide, lyophilization, QSAR, recursive partitioning},
	issn = {1570-1808},
	doi = {10.2174/1570180816666190329222636},
	author = {Miniyar, Pankaj and Mahajan, Anand and Anuse, Dattatray and Kumar, Ashish and Barmade, Mahesh and Sarkar, Dhiman and Arkile, Manisha and Khedkar, Vijay}
}
@article {49145,
	title = {Design and synthesis of novel quinazolinyl-bisspirooxindoles as potent anti-tubercular agents: an ultrasound-promoted methodology},
	journal = {Molecular Diversity },
	volume = {27},
	year = {2023},
	month = {JUN},
	pages = {1427-1436},
	type = {Article},
	abstract = {<p>
	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 quinazolinyl-bisspirooxindoles. The title compounds were synthesized by one-pot multicomponent [3 +2] cycloaddition reaction under ultrasonication. Further, in vitro anti-TB activity was evaluated against Mycobacterium tuberculosis H37Rv. Among the screened compounds, two compounds (4q and 4x) showed potent activity with MIC value 1.56 mu g/mL and four compounds exhibited significant activity (MIC =3.125 mu g/mL), and also cytotoxicity studies against RAW 264.7 cell lines reveal that most active compounds were less toxic to humans. In addition, in order to demonstrate the inhibitory properties, molecular docking studies were carried out and the results showed that the target compounds have good binding energy and better binding affinity within the active pocket, thus these compounds may consider to be as potent inhibitors toward selective targets.</p>
},
	keywords = {anti-tubercular activity, bisspirooxindoles, Cytotoxicity screening, Molecular docking studies, ultrasonication},
	issn = {1381-1991},
	doi = {10.1007/s11030-022-10500-x},
	author = {Allaka, Bhargava Sai and Basavoju, Srinivas and Rekha, Estharla Madhu and Sriram, Dharmarajan and Krishna, Gamidi Rama}
}
