00:01
We are given a reaction to illustrate the transformation of lanosterol into cholesterol.
00:07
All we want to do for this problem is to list out the differences between these two molecules so that we can better understand how we make this transformation from one molecule to the other.
00:20
So all we have to do is look at the two given structures and compare what is different about them.
00:27
We can see that in lanosterol, we have two methyl groups, at this carbon, and there are no substituents at that same carbon in cholesterol.
00:40
And we can also note that this methyl group in lanosterol is not present, and instead there is a hydrogen there in cholesterol.
00:51
And so that is the first main difference that we can clearly see between these two molecules, is that three of those ch3 methyl groups were removed in this transformation.
01:17
And now we can look for more differences between these two structures, and we can see that in this portion of the molecule, this side chain, that the only difference between these two to account for the transformation is that this double bond has been reduced...