TABLE IV 

 Derivatives of l-Ascoubic Acid (Vitamin C) 



Derivative 



3-Acetyl-5,6-isopropylidene 

 2-Amino- (scorbiimic acid) 

 6-Carboxy- (L-gulosaccharoascorbic 



acid) 

 Dehydro-o 

 2-Desoxj'- 

 6-Desox3'- 

 5,6-Diacetyl- 



2,3-Diacetyl-5,6-isopropylidene 

 1,2-Dimethyl- 

 2,3-Dimethyl- 



5,6-di-p-nitrobenzoyl- 

 6-trityl- 



5 , 6-isopropylidene 

 2,3- Dimethyl iso- 

 1-amide- 



5-p-nitrobenzo}'l- 

 5,6-Isopropylidene 



1-Methyl hetero- 



2-Methyl- 



3-Methyl- 



5, 6-isopropylidene 

 1 , 2,3,4, 5-Pentamethy liso- 

 2,3,5,6-Tetramethyl- 

 2,3,5-Trimethyl- 



6-p-nitrobenzoyl- 



6-trityl- 

 2,3,5-Trimethyliso- 



1-amide- 

 Compound with 



Benzophenone 



Nicotinic acid 



Nicotinamide 



" For derivatives of dehydroascorbic acid with phenylhydrazine, substituted phenylhydrazines, and 

 »-phenylenediamine, see refs. 32, 49, and 135. 



'*' F. Micheel and G. Bischoff, Ann. 525, 66 (1936). 



•« F. Micheel and K. Hasse, Ber. 69, 879 (1936). 



1" F. Micheel and W. Schulte, Ajin. 519, 70 (1935). 



'" L. von Vargha, Nature 130, 846 (1932); 131, 363 (1933). 



1" P. E. Papadakis, ./. Am. ('hem. Soc. 67, 2051 (1945). 



"» W. Wanner, J. Org. Chem. 14, 22 (1949). 



207 



