ROLE OF BILE IN LIPID ABSORPTION 



71 



chain located on carbon 17 has only 5 carbons rather than the 8 which 

 occur in cholesterol. The structural formulas for cholie acid (including 

 the numbering system) and for the closely related desoxycholic (or de- 

 oxycholic) acid (3,12-dihydroxycholanic acid) are given in formulas IV 

 andV. 



H.C 



I 



ho/ 



(IV) Cholie Acid 

 II OH 



V 



CH3 



H.C 



H, 



C CH 3 CH 



C— 

 CH 



CK, 



CH 



CH 

 CH, 



C C 



H 2 Ho 



(V) Desoxycholic Acid 



-CH, 



CH 2 

 CH 2 

 COOH 



Glycine or taurine is connected with the cholie or desoxycholic acid 

 through the carboxyl group located on carbon 24. 



A number of bile acids are now known which are less widely distributed 

 in nature than are oholic and desoxycholic acid. Chenodesoxveholie acid 



