1. Medicinal
and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India
2. Institute
of Organic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
3. Molecular
and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India