Aldoses, Ketoses, Fischer Projections and Epimers

[@psydocthepsyduck8382]

These lectures are totally worth more then the price of a typical university course! Thanks!

[@AKLECTURES]

Yugi Bear Hey! I appreciate that! Thanks for the positive feedback :-)

[@lubna-lx1kf]

SimCopter 1

[@Dr.MaorPich]

Agree.

[@thehalfacrepasture]

Most underrated science channel on YT. If you guys offered an MCAT course I would have gladly signed up for it.

[@giselle8867]

You blew my mind with the carbohydrate name reason. My professor never mentioned that and this is such an easy and great way to remember the basic formula for them. You are amazing!

[@shawnmakiri4435]

my teacher, google, science website, and my textbook failed to help me really understand epimer. You sir did what I thought was impossible. Thank you so much I really appreciate it. I wish you where my lecturer.

[@muslimsayed2261]

Your final example of an epimer does not show D-Mannose. Instead it shows D-Allose. Other than this minor mistake, You did a great job on the video.

[@gokudude45]

Thank you for existing!

[@johnguillen68]

Every time I search for topics on biochem I come across his lectures but when I see so many writings on his board, I feel like I'm going to get lost. All in all, I do get a good understanding from his lectures.

[@breeselearning9915]

I gotta say, I love this guy's videos. For a guy who really is no good at chemistry, I am really learning a lot more with this guy than anywhere else.

[@amgadmikhaeil9776]

All the students in my class really appreciate your efforts in explaining the different content of Biochemistry. You are a great teacher. Thank You Very Much for Your Help :)

[@kimiamehrabkhani4462]

I do not know how to thank you enough, you are AMAZING!

[@estonism]

Hey. Love your lectures. Very helpful for biochem courses. I think there is a mistake in one of the wedge and dash diagram in the second column under the fischer projection. The wedge and dash diagram drawn from the fischer projection should have the OH groups going into the board (dashed) and the H coming out of the board (wedged). Another way to remedy it would be to switch the end carbons. Thanks again for all of your videos.

[@Miniondeals]

Isomers with stereocenter(Enantiomers and if 2 or more stereocenter then diastereoisomers) and isomer without stereocenter(cis and trans,...etc)

[@helenafaria1671]

D-Glucose and D-Mannose are also epimers but on the carbon 2 :)

[@aliahsyafika4585]

i love your explanation 😍😍😍

[@jasminejohnson2182]

This man is top tier

[@riverwest360]

God richly bless you for making learning so easy 🙂 after class if I don't get anything right you always explain it right for me ... thank you so very much 🥰

[@shreyaverma1699]

Structure of D-mannose is not correct. At carbon 2 there should be H on the right and OH on the left.. so it becomes an epimer of glucose which differs at just C2.

[@ss-nu8xx]

fantastic lecture. grateful for it but that's not mannose. If you did the d version that is had the last chiral carbon"s OH group on the right then the OH groups of the 2nd and 3rd carbon atoms will be on the left. D glucose and d mannose are NOT epimers

[@yair4616]

just wanted to tell you that you're amazing. thank you very much.

[@farwaanjum]

My ultimate teacher👌👌👌👍❤️

[@arlesto2468]

These videos are amazing !!! Thank you !!!

[@Williaamrodrigues]

That saved my semester! Thank you 🙏🏻

[@vijaym.vijaydas8885]

Your class are👌👌

[@ogechukwudaphey9469]

Thank you so much...I almost gave up but this helped ❤️

[@Reem-mc4cw]

.Good explanation,Great Job,thank you so much

[@Svetik12345ify]

Thank you for your videos they are great!

[@AKLECTURES]

JustSve hey! you're welcome, thanks for watching :)

[@biotechnologyzainab3448]

explanation very wonderful . Thank you very much

[@nakulsampat1602]

very good lecture seriously appreciate your efforts sir thank you

[@Yt_All_]

Love you sir ❤❤ Thanks

[@alhaddi]

Thank you very much.

[@anuragverma3966]

the perfect lectures.....than you sir

[@tinatina-tu4mb]

thank you so much you really made it very simple

[@euscieu4246]

You're the best! Thanks

[@gt4941]

that's d-allose at the bottom right

[@Ishraqwantstochill]

Is that 3rd 3D depiction on top right correct? Because if you move the CHO to the left, shouldn't the two H(s) be pointing towards us with the 2 OH(s) pointing away?

[@ryangibson609]

i agree, it is incorrect. looks like he gave the enantiomer

[@azn4lfe1]

Your D-Mannose is wrong buddy. But the video is great explaining and really helped me a lot! thanks!

[@AKLECTURES]

+azn4lfe1 someone already mentioned that in the comments, but thanks anyways for catching that

[@kiruthikap5357]

I have a doubt Then D-erythrose and D-threose are also epimers, right?

[@lilithasotondoshe8226]

this is excellent

[@vipsbiochemistry5796]

hi, great work ....lots of curious points have been illustrated. Done a minor error by mistake on epimerism, hope you know by now.

[@ahmadmuhammadabba5063]

Perfect

[@ashokgowda102]

super explaining about individual tapic

Very interesting!

[@sarasara-ct6ro]

good video .thanks my sir

[@jessiechurchill8907]

amazing, thank you!

[@stevenlimanda5143]

I think what you mean by "mannose" in this lecture is "allose".. isn't it? :)

[@agoldstein135]

@@johmcg64 I mean... You can google it, its not mannose...

[@collinsn.6674]

it is Ribose not mannose

[@Nirajkumar-ob7uo]

Omg I loooovvveee u sir🥺

[@tunaaydn6849]

14:24 for screen shots

[@Procrastinerd]

Can you give me an example of diastereoisomers that differ at 2 or more chiral carbon? Aren't both examples presented epimers?

[@AKLECTURES]

Silent Language D-glucose and D-gulose are two examples of diastereoisomers that are not epimers.

[@AKLECTURES]

Silent Language And yes, both examples given in this lecture are epimers, which is actually fine. Thats because all epimers are diastereoisomers but the converse is not true; all diastereoisomers are not epimers.

[@Procrastinerd]

I see. Thank you!

[@marshad.2257]

Thanks so much for asking your second question. I had the same one!

[@sreejithvk8478]

he was saying nantomer or antomer, I could not make out what he was saying at 3:12 or if he meant an anomer.

[@jesusvillarreal8548]

Is the 3D projection correct? Aren't the H supposed to be dark wedges pointing out of the page?

[@ryangibson609]

it is incorrect

[@ranm9180]

life saver 🤗🤗🤗🤗🤗🤗🤗🤗

[@eddymutugi5695]

Great Work But Make the structures more Visible

[@mialabinc]

The structure of D-manose here is wrong. Two OH should be flipped with the hydrogen.

[@dentist9319]

Jordan University students depend on this channel in biochemistry course 😁

[@ryangibson609]

top rightmost structure is incorrect, you gave the enantiomer of the two structures to the left of it.

[@Faendal91]

I'm still a bit confused on how to see the difference with whether the molecule has a aldehyde or ketone group. I can't find the difference in the configuration of the atoms in each group to see how one would identify this.

[@mateusrodrigues7744]

I indicate the book "biochemistry lehninger. Have you ever read it? It explains the difference.

[@أسيلالسروري-ن3ع]

l have qoustion please : when l said the« same form of sugar» that is means like glucose and fructose ? or it's means the L and D for the same sugar ?!

[@rassimsimou1594]

Good

[@damishypedamischill7404]

im always asking myself why i study this if i dont know how it enables me i seek whys

[@diptarka100]

kindly check the structure of d mannose.... lectures' great btw :-)

[@lidiyaivannikova5464]

Does anyone know which is a penultimate hydroxyl group if the fisher ends in OH instead of CH2OH?

[@IceBlueLugia]

So the final CH2 is connected to 2 OH groups?

[@shaannazeem1791]

what is the long form of ak?

[@meghasingh4997]

i guess, the structure drawn is a D allose, not D mannose

[@younis3355]

🤨 chacha D-mannose jo structure galat aa sahe kar chibba

[@anjaligarrett5044]

What about an anomer?

[@sreejithvk8478]

he was saying nantomer or antomer, I could not make out what he was saying at 3:12 or if he meant an anomer.

[@abeerakasha8933]

I don't get aldoses and alketose!!😭

[@klausnewman8125]

That's not mannose, it's allose.

[@Janejackson89]

4:45

[@zerakhu]

Mirin knowledge aesthetics

[@aizabernardo492]

😍😍😍

[@anjaliagrawal1493]

Ur final ex is not the right structure of D mannose by the way except this awesome lecture it was

[@sadafshefa2285]

Best

[@harisff9498]

🥴

[@najjembajoyce]

but ur words are so small

[@Nosnosiii]

I love you more than my boyfriend U__U

[@jasminejohnson2182]

This man is top tier