a
School of Chemistry, University of Hyderabad, Hyderabad-500 046, India
E-mail: gmsc@uohyd.ernet.in
;
Fax: +91 4023012460
;
Tel: +91 4023010785
b
Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India
c
Chemical Biology/Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500 007, India