( 294 ) 



acetone, was combusted with lead chromate and the resull showed 

 thai the lupeol bad remained unaltered. 



0.1991 -ram yielded 0.2147 -ram H,0 and 0.6172 -ram CO, 



H. ('. 



Found : 12.08 84.54 



Calculated: 11.49 84.85 (for ('„ H 50 O)'). 



On boiling with acetic anhydride (10 parts) and sodium acetate 

 (1 part), the residue could he converted readily into an acetate 

 melting at 213° as shown by the analysis : 



0.2191 gram yielded 0.2251 -ram H,0 and 0.6588 gram CO, 



H. C. 



Found: 11.51 82.04 



Calculated : 10.93 82.41 (for C 33 H s ,0 3 ). 



For t he purpose of comparison the acetate of non-heated lupeol 

 was prepared and analysed in the same manner. It melted at 212°. 



0.2113 gram yielded 0.2169 gram H s O and 0.6362 gram CO, 

 H. C. 



Found : 11.5 82.11 



Calculated : 10.93 82.41 



A mixture of the two acetates analysed also melted at 212"", whilst 



the acetate mixed with lupeol gave a strong depression of the melting 

 point. 



In another experiment, lupeol was heated at 200° for 2 1 /, hours 

 in a current of dry carbon dioxide. A small calcium chloride-tube 

 attached showed a slight increase of weight, hut it appeared that a 

 little solid matter had again volatilised with the current. The heating 

 was then continued for six hours and the residue heated finally 

 until the mass began to melt. On treating the same with benzoyl 

 chloride and pyridine it was easy to obtain the lupeol henzoatc, 

 (m.p. 264°) proving that the lupeol has not passed into the hydro- 

 carbon. 



Finally I have also heated lupeol with acetic anhydride and sodium 

 acetate in a sealed tube for three hours at 170°. The reaction product 

 after being treated with water was recrystallised from a mixture of 

 acetone and alcohol. The melting point of the product obtained was 



') I will not go into the question whether it would lie better to assign to lupeol 

 the formula G 30 H50 0. 



