Q5. In the 1H NMR of 1,3,4,6-tetra-0-acetyl-2-amino-2-deoxy- -Dglucopyranoside, the H1 proton appears as a doublet (d) at =5.46ppm (J=9Hz ) while the H2 proton appears as a doublet of doublet (dd) at = 3.03ppm with (J=9,10Hz). From these data determine which of the following chair conformations (3C4 or 4C1) is adopted by the title compound and explain your answer. =5.46=3.03