Preface xvii 1 Heterocyclic Molecules as an Active Pharmaceutical Ingredient: An Introduction 1 Anushka Sharma, Awaneet Kaur, Pranav Gupta, Debashis Paramanick and Abdulsalam Alhalmi 2 Biologically Active Nitrogen Heterocyclic Compounds 27 Diwakar Chauhan, Monika Chauhan, Priya Tyagi and Amrita Kaushik 3 Heterocyclic Compounds as Antimicrobial (Antibacterial, Antifungal, Antiviral, and Anthelmintics) Agent 61 Gaurank Pal, Devaang Mathur, Lakshit Srivastav, Vishal Mehare, Ajay Gupta, Shruti Khanna Ahuja and Puja Prasad 4 Heterocyclic Compounds as Anticancer Agents 123 Aadya Singh, Priyanshi Kamboj, Pragya Swami, Puja Prasad and Shruti Khanna Ahuja 5 Heterocyclic Compounds as Anti-Inflammatory Agents 179 Hemlata Nimesh, Sagar Kumar and Nidhi Srivastava 6 Heterocyclic Compounds as Antioxidant Agents 207 Niranjan Kaushik, Shristi Singh, Ajita Paliwal and Sachin Chaudhary 7 Heterocyclic Compounds as Anticonvulsants, Antipyretics, Antiallergic Agents, and Antileprosy Agents 249 Anushka Sharma, Awaneet Kaur, Pranav Gupta, Debashis Paramanick and Abdulsalam Alhalmi 8 Heterocyclic Compounds as Antihistamine Agents 269 Avinash Jha, Saurabh Sharma, Deepika Paliwal, Aman Thakur and Saurabh Srivasatva 9 Heterocyclic Compound Having Herbicides Activity 307 Niranjan Kaushik, Mridul Singh Sengar, Deepika Paliwal and Nadeem Ahmad Siddique 10 Heterocyclic Compounds as Antihypertensive Agents 349 Manjot Singh, Deepika Paliwal, Aman Thakur, Manvi Karayat and Saurabh Srivasatva 11 In Silico Studies on Heterocyclics as an Active Pharmaceutical Agent 389 Anurag Paul, Debanjali Adhikary, Abdul Kareem Parchur, Gayatri Sharma and Apoorva Mishra 12 Piperazine Derivatives: Potential Antimicrobial Agents 407 R. Prathap, Rashmi Dubey, Anjali Gupta and Divya Bajpai Tripathy 13 Synthetic Drug Discovery Strategy of Benzimidazole Derivatives and Their Applications 443 Prasad Vijay Korake, Diwakar Chauhan and Subhalaxmi Pradhan 14 Synthesis and Biological Evaluation of Thiophene- and Piperazine-Based Active Compounds 475 Ayyagari Subramanya Sharma, Subhalaxmi Pradhan and Prashant Kumar 15 Heterocyclic Compounds as Antileprotic Agents 509 Sanjita Das, Anjali Singh, Shalini Gautam and Gyas Khan 16 Bromodomains: Biomedical Applications of Active Ingredients 531 Sweta Raj, Anjan Kumar Nayak, Harsh Vardhan and Divya Bajpai Tripathy References 543 Index 547.