45 Alcohols, Glycols and Compounds Related to Sugars 



It is claimed (in the most recent reference below) that 

 phthiocerol, as ordinarily isolated, is a mixture of the fol- 

 lowing two substances: 



OCH3 



I 

 CH3(CHo)ooCH— CHo— CH{CH2)4CH— CH— CH2CH3 



OH OH CH3 



and 



OCH3 



CHslCHsl^oCH— CH2— CH(CH2)4— CH— CH— CH2CH3 



I I I 



OH OH CH3 



Mycobacterium tuberculosis (human, bovine and 

 avian ) 



In the wax of the mycobacteria phthiocerol is present 

 mainly as the dimycoceranate. 



J. A. Hall, J. W. Lewis and N. Polgar, /. Chem. Soc, 3971 

 (1955). 



Hans NoU, /. Biol. Chem. 224 149 (1957). 



H. Demarteau-Ginsburg, E. Lederer, R. Ryhage, S. Stallberg- 

 Stenhagen and E. Stenhagen, Nature 183 1117 (1959). 



