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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: Jill on May 05, 2004, 12:34:59 PM

Title: How many enantiomers are possible fore aldoheptoses?
Post by: Jill on May 05, 2004, 12:34:59 PM

How many enantiomers are possible for aldoheptoses?

Title: Re:How many enantiomers are possible fore aldoheptoses?
Post by: AWK on May 08, 2004, 04:29:12 AM

If you mean unbranched carbon chain number of pairs of enantiomers is 2⁴, number of all stereoisoners is 2⁵
For cyclic forms you should consider one more asymmetric carbon atom
and eventually take into account furanoses and pyranoses. This give you a total number up to 96 pairs of enantiomers (most of them are also called anomers)