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Orgo Question

Discussion in 'MCAT: Medical College Admissions Test' started by osumc2014, Dec 22, 2008.

  1. osumc2014

    7+ Year Member

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    For some reason i keep finding mixed answers for this. Does anomeric carbon of beta-D-Fructose point up or down? I think its up but in structure of sucrose, it points down and still is beta. Im confused.
     
  2. G1SG2

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    The -OH group on the anomeric carbon of beta-D-Fructose points up. If it points up, its beta. If it points down, then its alpha.
     
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  3. osumc2014

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    Yea, I was just checking if it was different for furanoses or not cause they got that extra -CH2OH group at the anomeric carbon.
     

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