Question

Identification of Common Aldoses from Optical Rotation and NMR Pre-lab Preparation: Read Klein Sections 5-4 ("Optical Activity", pg 205-209) and 24-6 ("Reduction of Monosaccharides, pg 1157-1160). In your notebook prepare a chart of the structures to be studied by drawing Fischer projections across the top of a new page for the following five aldoses: D-glucose, D-mannose, D-galactose, L-arabinose, and D-xylose. Under each aldose, draw the Fischer projection of the alditol which results from the reduction of the aldose. An example for D-erythrose is given below. OH CH2OAC H OAc H OAc CH2OAC 1. NaB He, N aOH (aq) HOH H OH сH,он OH н- OAc н- CH-он OH 2 HC( ac) (DMAP) acetyl group D-erythrose Under each alditol, make drawings for the corresponding acetylated alditol. Simply replacing each hydroxyl proton with "Ac" in the alditol does this. "Ac" is an abbreviation for the acetyl group and has the structure shown above. We will discuss the expected optical properties and NMR spectra of each of these acetylated alditols, so make room below each of the final drawings.

I Need Help Making This Chart and Fischer Projections

Answer 1

CHO CHO Ho Но Я - — GHO нон но нь Едн CH, ON D-glucane NOBH, NOCHIAR 1 2 HCl (ap) ң н— — оң Сң, он D-mannuse Сно и — он 40-ти цон и си,0ң L-arabinose CHO и. Той цо - - И н -- ОИ inom D-xylose - он CHLOH Degalectone CH₂OH НЕ СА 40 ——ң Ятген нон — н — и но Но Сон Сң, он си,ой нь оң но — — Н по - — H не он 1- он ton CH₂ok 0:- и он ио- — H и он ни сқ,5ң СИ,ди , он до 1л Choke CHOAC Chhotte n ote Асо - и 4 ota nt otc Вер - и Aco tu Chotte n ote Ao tu Aco n H ote OAC Acontoh Chhotte ne ate Ao tu H ote chote Acon Aon thote ChoAc n ote chote Chhote