car - Carbohydrates Problem Set Winter 2010 For some...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Carbohydrates Problem Set – Winter 2010 For some questions, you will need to use additional paper. 1. Complete the Fischer projection and/or chair conformation templates of the three sugar compounds below. 2. When β -D-galactose is dissolved in water it has an initial optical rotation of + 52.8° which slowly increases to + 80.2°. Using all significant chemical structures and a few brief sentences, explain what is occurring. beta pyranose form alpha pyranose form
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3. Provide the structure(s) of the major organic product(s) obtained from each reaction.
Background image of page 2
4. Draw the structure of L-arabinose on the template provided below. 5. Circle the reducing sugars. H O H H OH HO H O H HO HO H H H HO OH H O H OH OH e) OH HO H H OH COOH H HO f)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6a. Complete the given template of the pyranose form of D-allose and use the Fischer projection to draw the product of the reaction of D-allose with NaBH 4 . 6b. Circle the correct answer to complete the sentence below: i) The pyranose form of D-allose (shown above) is the { alpha | beta } anomer. ii)
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 6

car - Carbohydrates Problem Set Winter 2010 For some...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online