1. Medicinal & Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
2. Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
3. NMR Research Centre, Division of SAIF; CSIR-Central Drug Research Institute; Lucknow 226031 India
4. Academy of Scientific and Innovative Research; New Delhi 110001 India
5. Biochemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
6. Microbiology Division; CSIR-Central Drug Research Institute; Lucknow 226031 India