48 



CAKBOHYDRATES 



[CH. 



four different groups of atoms. It will be found in this case that there 

 are sixteen possible isomers, as against eight for pentose : 



CHO 



H_C— OH 



I 

 H— C -OH 



HO— 0— H 



I 

 HO— 0— H 



I 

 CH2OH 



^-Mannose 



CHO 



I 

 H— C— OH 



HO— C— H 



I 

 H_C— OH 



I 

 HO— C— H 



I 

 CH2OH 



Mdose 



CHO 



I 

 HO— C— H 



I 

 H_C— OH 



-OH 



HO— C— H 



I 

 CH2OH 



Z-Galactose 



CHO 



I 

 HO— C— H 



I 

 -C— H 



I 

 HO— C— H 



HO 



HO— C— H 



1 

 CH2OH 



^-Allose 

 unknown 



CHO 



I 

 HO— C— H 



I 

 HO— C— H 



i 

 H_C— OH 



H_C— OH 



I 

 CH2OH 



</-Mannose 



CHO 



I 

 HO— C— H 



H- 



.C— OH 



I 

 HO— C-^H 



H- 



-OH 



CH2OH 

 c?-Idosei 



CHO 



I 

 H_C— OH 



I 

 HO— C— H 



i 



HO— C— H 



I 

 H_C— OH 



I 

 CH2OH 



G?-Galactose 



CHO 



I 

 H_C— OH 



! 



H— C— OH 



1 

 H_C— OH 



I 

 H—C— OH 



I 

 CH2OH 



o?-Allose 



CHO 



I 

 HO— C— H 



I 

 H_C— OH 



I 

 HO— C— H 



HO— C— H 



I 

 CH2OH 



^-Glucose 



CHO 



I 

 HO— C— H 



I 

 HO— C— H 



I 

 H—C— OH 



HO— C— H 



I 

 CH2OH 



^-Gulose 



CHO 



H_C— OH 



H-C— OH 



■ I 

 H—C— OH 



I 

 HO— C— H 



I 

 CH2OH 



^-Talose 



CHO 



I 

 H_C— OH 



I 

 HO— C— H 



I 

 HO— C— H 



I 

 HO— C— H 



CH2OH 



Z-Altrose 

 unknown 



CHO 



H—C— OH 



I 

 HO— C— H 



I 

 H_C— OH 



I 

 H—C— OH 



I 

 CH2OH 



o?-Glucose 



CHO 



I 

 H—C— OH 



I 

 H—C— OH 



HO— C— H 



i 

 H_C— OH 



i 

 CH2OH 



fl^-Gulose^ 



CHO 



I 

 HO— C^H 



HO— C— H 



I 

 HO— C— H 



I 

 H—C— OH 



I 

 CH2OH 



c?-Talose 



CHO 



I 

 HO— C— H 



I 

 H—C— OH 



I 

 H—C— OH 



H—C— OH 



I 



^ Known formerly as Z-Idose. 



c?-Altrose 

 2 Known formerly as i-Gulose. 



