MORE MNEMONICS

4 none down first down second down. D-talose. D-mannose. D-idose. All guests gladly alter table manners into gaiety. Example: glucose (second up). D-a...
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JOURNAL OF CHEMICAL EDUCATION

MORE MNEMONICS THE mnemonic by Hunter (THISJOURNAL, 32, 584 (1955)) for naming the aldohexoses requires that the student transpose a series of straighkhain representations into the modern perspective ring representations of the aldohexoses. A simpler mnemonic for the ring structures has been d e vised. This can easily be used for the more familiar straight chains. The partial structure (on the left below) is first simplified to a straight chain (on the right) and then only the OH groups are indicated.

D-Allose none up

4

3

2

none down D-talose

D-gulose first up

+ A

4

D-~~UCOE~

second up

+

4

first down second down D-mannose D-idose All guests gladly alter table manners into gaiety

D-altrose third up

I

I

4

3

2

third down D-galactose

Example: glucose (second up)

W. C. J. HOLLENBERG