a
Department of Medicinal Organic Chemistry, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo,
Chiba 260-8675, Japan Fax: +81(43)2262944 Email: benti@faculty.chiba-u.jp
,
Laurence M. Harwood*
b
Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, UK Fax: +44(118)3786121 Email: l.m.harwood@reading.ac.uk