A preliminary MMFF implementation of selenium atom parameters necessary to
model the nucleoside I is reported. X-ray structures of two compounds I and
2 have been used as references. Ab initio methods have been adopted for ch
ecking torsional energy profile and charge distribution. Monte Carlo calcul
ations and energy minimization in solvation complete the conformational sea
rch. (C) 2001 Elsevier Science Ltd. All rights reserved.