1. Department
of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
2. Department
of Chemistry, University of Reading, Whitenights, Reading RG6
6AD, U.K.
3. Chemistry
Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C.
Mullick Road, Jadavpur, Kolkata 700032, India