Say for example I have the ring structure shown below (chiral centers shown in red).
I know there are the following FOUR pairs of enantiomers (which I can draw):
[R, R, R] - [S, S, S]
[S, R, R] - [R, S, S]
[R, S, R] - [S, R, S]
[R, R, S] - [S, S, R]
However, how many pairs of diastereomers are there? For a system with two chiral centers there are four pairs of diastereomers and two pairs of enantiomers.
Here, am I correct in saying that if [R, R, R] can form part of six diastereomeric pairs then so can [S, R, R], [R, S, R] and [R, R, S] giving 24 possible PAIRS of compounds related as diastereomers?
I've had someone else suggest different numbers to me and I'm just wondering if anyone else has more input into this, thanks!