— C)2 — 
CH. 
CH. 
CH 
CH 
H^C 
H,C 
CH.COOH H„C 
C = C< 
pulegenic acid 
HjC 
CH 
C — CH< 
C H. 
C H. 
pulegene 
CH. 
CH 
H^C 
H^C 
COOH 
/CH„ 
.CO — CH^" ^ 
^CH„ 
ketone acid C,^Hig0.5 
CH. 
CH 
C = NOH 
CC1.CH(CH 
pulegene nitrosochloride 
CH, 
H,C 
HC 
H,C 
HC 
CH 
C=-NOH 
C . CH(CH 
3/2 
CH, 
CH 
CO 
C . CH(CH3\ 
or 
oxime 
or 
pulegenone 
H^C 
H^C 
H^C 
CH 
\C=NOH 
II 
C = C(CH3), 
CH, 
I 
CH 
II 
CO 
C = C(CH3), 
CH3 
i 
CH 
H,C 
CH . CH(CH3)2 
Dihydropulegenone Cg H^gO = methyl(i)-isopropyl{3)-pentanone(2). 
