a
Department of Chemistry, Shiga University of Medical Science, Seta, Otsu 520-2192, Japan
E-mail: nkomatsu@belle.shiga-med.ac.jp
;
Fax: +81-77-548-2405
;
Tel: +81-77-548-2102
b
Department of Applied Chemistry, Osaka Electro-Communication University, Neyagawa, Osaka 572-8530, Japan
c
Bio-Organic Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India