Sasakiexam3 - CHEM 239U Spring, 2005 Prof. Sasaki EXAM #3...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEM 239U Spring, 2005 EXAM #3 Name . Prof. Sasaki 150 points TOTAL Good Luck! Note: Only answers in the box will be graded. ________________________________________________________________________ 1. (35) The following is the Fischer projection for N-acetyl-D-glucosamine. CHO CH 2 OH H NHCOCH 3 HO H HO H H (a) Draw the Fischer projection of N-acetyl-L-glucosamine. (b) Draw Haworth structure for the β -pyranose form of N-acetyl-D-glucosamine. (c) The following is the antigenic determinant for type A blood. Circle all anomeric carbons AND indicate their stereochemistry ( α - or β -anomer). O O O O O O OH O HO HO CH 3 CH 3 CONH HO OH OH OH OH HO OH CH 3 CONH O protein
Background image of page 1

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

View Full DocumentRight Arrow Icon
CHEM 239U page 2 Name . 2. (35) (a) Describe a scheme for carrying out the following synthesis. (In the synthesis reported in the literature, four operations were required.) You may use any reagents that you wish. H 3 CO HO O CH 3 CH 3 O H 3 CO H 3 CO OH CH 3 (b) Draw a stepwise mechanism for the following reaction. Use curved arrows to indicate
Background image of page 2
Background image of page 3

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

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This test prep was uploaded on 04/15/2008 for the course CHEM 239 taught by Professor Sasaki during the Spring '06 term at University of Washington.

Page1 / 4

Sasakiexam3 - CHEM 239U Spring, 2005 Prof. Sasaki EXAM #3...

This preview shows document pages 1 - 4. Sign up to view the full document.

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