Page 532 - Applied Pharmacognosy
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The Constructing Units                                          531

2.  Cac2etuynl-itC:oA.A  two-carbon unit may     be provided    by
                         This could be a simple  acetyl group,  as
    in an ester, but more frequently it forms part of a
    long alkyl chain, as in fatty acids, or may be part of
    an aromatic system. Acetyl-CoA is first converted
    into the more reactive malonyl-CoA before its
    incorporation.

    Acetyl-CoA           Malonyl-CoA
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