76 



INDEX 



Ci5-9,10-Methylenehexadecanoic 

 acid, location of cyclopropane 

 ring in, 48 



occurrence in Escherichia coli, 

 27 

 DL-c/5-9,10-Methylenehexadecanoic 



acid, synthesis of, 22 

 DLd5-9,10-Methyleneoctadecanoic 

 acid, amide, 15 



biotin-like growth promoting ac- 

 tivity of, 21 



ct5-configuration of, 14 



dibasic acids from degradation 

 of, 46 



formation from sterculic acid, 14 



identity with dihydrosterculic 

 acid, 18 



location of cyclopropane ring in, 

 42-47 



reaction with HBr, 42, 43 



some physical properties of, 15 



synthesis of, 17-20 

 DL-fran5-9,10-Methyleneoctadeca- 

 noic acid, amide, 15 



biotin-like growth promoting ac- 

 tivity of, 21 



electron density map of, 25 



infrared spectrum of, 14 



location of cyclopropane ring in, 

 42-47 



reaction with HBr, 42, 43 



synthesis of, 10-13 

 DL-ci5-ll,12-Methyleneoctadecanoic 

 acid, amide, 15 



density of, 23 



electron density map of, 24 



synthesis of, 17-20 

 DL-fran5-ll,12-Methyleneoctadeca- 

 noic acid, amide, 15 



DL-rrarz5-ll,12-Methyleneocta- 



decanoic acid, Cont. 

 biotin-like growth promoting ac- 

 tivity of, 21 

 infrared spectrum of, 14 

 location of cyclopropane ring in, 



42-47 

 reaction with HBr, 42, 43 

 synthesis of, 10-13 

 10-Methylstearic acid, biosynthesis 



from oleic acid, 54 

 biosynthesis in Mycobacterium 



phlei, 54 

 Monounsaturated fatty acids, as 



precursor of cyclopropane fatty 



acids, 68 

 "methylation" of, 68, 69 

 Mycobacterium phlei, desaturation 



of fatty acids by, 66 

 inability to convert oleic acid to 



stearic acid, 68 



Octanoic acid, as precursor of sat- 

 urated and unsaturated fatty 

 acids in Clostridium butyri- 

 cum, 63 

 Oleic acid, as precursor of 10- 

 methylstearic acid in Mycobac- 

 terium phlei, 54 

 biotin-like growth promoting ac- 

 tivity of, 21 

 biotin-sparing action of, 28 

 distribution in bacteria, 36 

 labeling pattern in biosynthetic, 



64 

 melting points of some deriva- 

 tives, 37 

 "methylation" of, by Lactoba- 

 cillus arabinosus, 69 



