Other Pentitol Pentaacetates

Hydrogenation of the pentenynol with Bourguel s catalyst gives the corresponding divinylearbinol, CH2=CH—CHOH—CH=CH2, b. p. 114.5-116°, die 0.8648, nn 1.4452. Treatment of this divinylearbinol with the theoretical quantity of silver chlorate and a little osmic acid yielded a sirup which has not crystallized. From the acetylation of this sirup there was obtained a small quantity of D,L-arabitol pentaacetate and a viscous liquid which has not been studied further but certainly contains one or both of the other pentitol pentaacetates. 

Department 0 Biochemistry and Nutrition, University of Southern California Medical School, Los Angeles, California 

Transformation of Fatty Acids with Odd-numbered Carbon Chains to 

Non-availability of Even-chain Fatty Acids as Sources of Carbohydrate. 129 

Miscellaneous Experimental Evidence that Fat is Converted to Carbo- 

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