Thermodynamic stability of 3-C-nitro-D-glucal and -D-allal derivatives
as well as the corresponding 5 alpha-carba sugars was reproduced by a
b initio (6-31G) calculations. The calculations also predicted that 3
-C-nitro-D-gulal should be more stable than its 3-epimer in spite of s
trong bias for a nitro group at C-3 to occupy the equatorial position.
This prediction was experimentally proved (C) 1998 Elsevier Science L
td. All rights reserved.