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800 Chapter 25
Copyright © 2017 Pearson Education, Inc.
37.
a.
CH
3
CH
3
CH
3
CH
3
H
3
C
HO
OH
d.
CH
3
CH
3
CH
3
CH
3
H
3
C
HO
OH
b.
H
3
C
O
O
CH
3
CH
3
CH
3
CH
3
c.
CH
3
CH
3
CH
3
CH
3
H
3
C
e.
CH
3
CH
3
CH
3
CH
3
H
3
C
HO
O
38.
a.
Starting with mevalonyl pyrophosphate, you can trace the location of the label in the compounds that
lead to the formation of geranyl pyrophosphate. Geranyl pyrophosphate is converted to citronellal.
CH
3
CCH
2
CH
2
OPP
i
OH
CH
2
CO
−
O
14
CH
3
CCH
2
CH
2
OPP
i
CH
2
14
CH
3
C
CH
3
CH
3
CH
2
OPP
i
14
mevalonyl pyrophosphate
isopentenyl pyrophosphate
dimethylallyl pyrophosphate
C
H
14
14
O
citronellal
14
14
OPP
i
=
CHCH
2
CH
2
C CHCH
2
OPP
i
CH
3
C
CH
3
14
CH
3
14
geranyl pyrophosphate
O
P
O O
O
−
O
P
O
−
O
−
=
OPP
i