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Unformatted text preview: 2 Et N CO 2 Et O O CO 2 Et H 3 O + OH H 3 N O CO 2 H 1 pt 1 pt 1 pt Name __________________________ 2. (4 pts) Draw the structure of the major product obtained from each of the following reactions. 3. (4 pts) Draw a Haworth projection for α-D-idopyranose. 2 OH H 2 N O N H N O O N O O HO N O O a) b) CHO CH 2 OH H HO OH H H HO OH H D-idose O H 2 N O solid phase OH H N O Fmoc Dicyclohexyl-carbodiimide (DCC) N-hydroxy-succinimide (NHS) H N H N O dicyclohexylurea pH 9 buffer (It is not necessary to know the structures of Fmoc, DCC or NHS to answer the question, but you do need to understand their roles) O OH OH OH OH OH 1 pt for alpha OH 1 pt for 6-membered ring 2 pts for correct placement of other OH groups and CH 2 OH N H N H N O O O N H O Fmoc O H N O solid phase...
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- Spring '08
- pH, Amine, Fmoc