LEUCOCYTES IN METABOLISM OF CARBOHYDRATES 
157 
O 
I 
HC — OH 
I 
CH,OH 
O 
II 
C - OH 
I 
H - C - OU 
I 
CH 3 
O 
II 
C — II 
I 
IT - C — OH TI 
I - I 
CII 2 O H OIÏ 
O 
C - H 
I 
COH 
I 
ch 3 
glyceric aldéhyde 
lactic acid 
0 
0 
0 
II 
II 
II 
C — H 
| - ►- 
C — H 0 
1 + Il 
0 
1 
.*• T _____ 
t 
1 
COH 
C H, 
1 
CHOU 
II 
1 
CH, 
CII 3 
methylglyoxal 
CII 3 
lactic acid 
methylglyoxal 
(enolic form). 
In tho first process the positions of lhe hydrogen atom and 
of the hydroxyl group attached to the second carbon atom 
remain unchanged, in the second it may he altered; this is 
obvious from the graphie expression of the reactions. Bearing 
in minci on the one hand this considération and on the other 
the configuration of varions hexoses, one should expect the 
structure of each individual hexose to détermine the structure 
of the laclic acid formed from it. For instance, 
o 
II 
C — H 
I 
— C — H 
I 
C - H 
I 
C — OH 
OH 
OH 
H 
H — C - OH 
I 
ch 2 oii 
mannose 
O 
II 
C — H 
I 
H — C - OH 
I 
OH - C — H 
I 
H - C - OH 
I 
H - C - OH 
I 
CH 2 OH 
glucose 
OIÏ 
II 
O 
II 
C — H " 
I 
C — II 
I 
CH 2 OII 
'I 
+ 
O 
II 
C — H ~ 
I 
C - OH 
| 
CH.OH 
II — 
O 
II 
C — H" 
I 
C - OH 
II 
CH 3 OH 
"F 
O 
C - II 
| 
C — OH 
■I 
CIT 2 OII 
O 
II 
C- 
OH 
->- OH — C — H 
I 
CH, 
l. lactic acid 
O 
II 
C — O 
II — C — OH 
ch 3 
d. laclic acid 
O 
II 
C — OH 
I 
ii — C - OH 
I 
CII 3 
d. lactic acid 
O 
C - OH 
I 
H - C - OH 
I 
ch 3 
d. lactic acid 
