Only the D sugars are shown in Figure 25.3. Draw Fischer projections for the following L sugars:

Step 1: Start by drawing the Fischer projection for L-Xylose, which has 5 carbon atoms.

Only the D sugars are shown in Figure 25.3. Draw Fischer...

Transcript

00:01 Okay, problem eight, we're asked to draw the fisher projections for the following sugars, l.

00:06 Silos, l.

00:07 Galactos, and l.

00:08 Allos.

00:09 But here's the thing.

00:11 In the textbook, we're given the d configuration of the sugars, which i have copied and drawn here on the screen.

00:20 So we have d silos, d galactos, and the alos.

00:25 And the thing with d and l sugars is that they're just mirror images of each other.

00:30 So i have the d configurations right here and all we have to do is draw the mirror image of each of these.

00:37 Okay, so just go and start with the xylos.

00:42 So i'm drawing this kind of kind of a mirror right here.

00:50 So i'll go ahead and zoom in a little bit so we get to see more of it.

00:58 So let's go ahead and start with that aldehyde, c -h -o.

01:06 And then going on to ch2 oh h.

01:12 Okay, so these are not chiral centers, so the mirror image is going to be pretty much the same.

01:21 All right, so for these ilos, you have the alcohol group on the right side, so we're just putting that on the left like so, and we're going to do the same for all the chiral centers, okay, since we're just drawing the mirror image.

01:39 Okay.

01:39 So you could check it if you want, but that looks like we have the right mirror image.

01:47 So let me put this barrier right here so we could separate...

Question

Only the D sugars are shown in Figure 25.3. Draw Fischer projections for the following L sugars: (a) L-Xylose (b) L-Galactose (c) L-Allose

Question

Only the D sugars are shown in Figure 25.3. Draw Fischer projections for the following L sugars: (a) L-Xylose (b) L-Galactose (c) L-Allose

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