Fischer to Haworth shortcut for Glucose and Fructose

แชร์
ฝัง
  • เผยแพร่เมื่อ 22 ธ.ค. 2024

ความคิดเห็น • 28

  • @GaverMote
    @GaverMote 12 วันที่ผ่านมา

    iam from iraq this is in ❤University of Kufa. I searched very hard to find someone talking about this topic. Thank you very much. I feel that I understand the topic a little

    • @Leah4sciMCAT
      @Leah4sciMCAT  3 วันที่ผ่านมา

      I'm glad I was able to fill that gap for you!

  • @fatts96
    @fatts96 2 หลายเดือนก่อน +7

    amazing explanation, u saved me once again!

    • @Leah4sciMCAT
      @Leah4sciMCAT  2 หลายเดือนก่อน

      I'm so happy to hear that!

  • @SucpwBcosbsv
    @SucpwBcosbsv 2 หลายเดือนก่อน +3

    In min 0:52
    It isn’t enough to put the last chiral carbon’s alcohol on the left for L-glucose (and other sugars), you have to change all the alcohols to their respective opposite side. If not then you will get a different sugar (an epimer in 2,3,4 of L-glucose, not L-glucose)
    Same problem for fructose

    • @Leah4sciMCAT
      @Leah4sciMCAT  2 หลายเดือนก่อน +5

      Oh my goodness you are right. I don't know how I didn't know this for over a decade teaching this. Thank you so much for pointing it out. Mind blown 🤯

  • @maximilliansaar5512
    @maximilliansaar5512 2 หลายเดือนก่อน +3

    Perfekt erklärt!
    Vielen Dank

    • @Leah4sciMCAT
      @Leah4sciMCAT  2 หลายเดือนก่อน

      You're very welcome!

  • @miladabdolahzadeh8473
    @miladabdolahzadeh8473 หลายเดือนก่อน +1

    I have a question, I'm studying veterinary biochemistry and my professor drew the haworth projection with the first carbon on on the left part of the pyran and the c6 down , is he wrong or this is another way of showing it?

  • @ursamajor5744
    @ursamajor5744 7 หลายเดือนก่อน +3

    Is it because D-glucose’s hydroxyl groups are in equatorial position, so it is more stable in that conformation?

    • @Leah4sciMCAT
      @Leah4sciMCAT  7 หลายเดือนก่อน +2

      Exactly 💯

  • @timecode37
    @timecode37 12 วันที่ผ่านมา

    Could it be that the first skeletal formula for D-Glucose isn't quite right? My Fischer projection ends up with all the hydroxyl groups on the right side. If you compare it with the picture on wikipedia, the skeletal structures for D-Glucose don't match. When doing the projection starting from the skeletal structure from wikipedia, the fischer projection matches the one in the video. Can someone tell me what i'm doing wrong?

    • @Leah4sciMCAT
      @Leah4sciMCAT  10 วันที่ผ่านมา +1

      Yup, I've been teaching this for well over a decade and only JUST learned that I've know and taught this wrong all along!! I will be redoing this video 🤦🤦🤦

  • @mistyor3754
    @mistyor3754 2 หลายเดือนก่อน

    Hiii teacher , I’m a bit curious about where does the blue OH comes from ?

    • @Leah4sciMCAT
      @Leah4sciMCAT  2 หลายเดือนก่อน +1

      Great question! The blue oxygen is the aldehyde oxygen in the Fischer projection of glucose. It has been converted into an alcohol group in the Haworth.

  • @ShikahAlmuharif
    @ShikahAlmuharif 3 หลายเดือนก่อน

    This really helps me thank u sm ❤

    • @Leah4sciMCAT
      @Leah4sciMCAT  3 หลายเดือนก่อน

      You're so welcome!

  • @kroliia3116
    @kroliia3116 5 หลายเดือนก่อน

    What happens to the purple “H” that’s attached to the red “O” that attacks?

    • @Leah4sciMCAT
      @Leah4sciMCAT  4 หลายเดือนก่อน +3

      Good question! The red "O" becomes deprotonated in solution and loses that purple "H". It is no longer a part of the structure when glucose is drawn as a Haworth projection.

  • @NforAbanda-b4w
    @NforAbanda-b4w 12 วันที่ผ่านมา

    Why is glucose called D or L glucose

    • @Leah4sciMCAT
      @Leah4sciMCAT  10 วันที่ผ่านมา

      The D and L have to do with stereochemistry of the molecule

  • @ppnugget346
    @ppnugget346 หลายเดือนก่อน +4

    I dont understand it at all imma fail so hard

    • @Leah4sciMCAT
      @Leah4sciMCAT  หลายเดือนก่อน

      Oh no, I'm so sorry! When do you plan to take the MCAT?

    • @mimi1506.
      @mimi1506. 25 วันที่ผ่านมา +1

      Same dude, same...

    • @ppnugget346
      @ppnugget346 25 วันที่ผ่านมา +1

      @@Leah4sciMCAT MCAT??? im in the 11th grade
      I got 58% on the bio test btw (im in belgium so its a pass)

    • @sn-bo3un
      @sn-bo3un 13 วันที่ผ่านมา

      That’s crazy I’m learning this as a 24 year old in university organic chem 2

  • @BenjaminMakurAnyaar
    @BenjaminMakurAnyaar 22 วันที่ผ่านมา +1

    Look how fast you're!!!😢

    • @Leah4sciMCAT
      @Leah4sciMCAT  18 วันที่ผ่านมา +1

      I hope you found the video helpful!