Abstract
Molecular mechanics (MM2) calculations were performed on conformers of a series of stereoisomeric methyl 5,7- O-benzylidene-3- deoxy-3-nitro- α- d-heptoseptanosides. The lowest-energy conformations are twist forms derived from the regular 5 C 1,2 and O C 3,4 chairs. The data obtained for the steric energies and the theoretically calculated 3 J H, H coupling constants of the compounds are consistent with experimental observations on the synthetic products.
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