untitled

Fig. 7.15Outline of the isoprenoid pathway for synthesis of sterols, several fungal pheromones, several mycotoxins,
and the cephalosporin antibiotics.

3 CH 3 CO.CoA HOOC.CH 2 CH 2 .COOH CPC.CH 2 .CH 2 P

CH 2

OH

H 3 C

H 2 C

C

Condensation

3 Acetyl-coenzyme A Mevalonate (6-C) Isopentyl pyrophosphate

(isoprene unit)

Fig. 7.14Pathway from acetyl-coA to the production of isoprene units.