Page 534 - Applied Pharmacognosy
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The Constructing Units                                              533

5.  Cei6tCh2eNr  unit: This unit is formed from
                 L-phenylalanine or L-tyrosine.
    In the elaboration of this unit, the
    carboxyl carbon of the amino acid is                            Phenylalanine
    removed.                                                           Tyrosine

6.Indole         dCe2Ncarbuonxity:latLio-tnrytpotporpohvaidne  can   Tryptophan
 undergo                            as  indole                 the
remainder        of  the  skeleton                             C2N
unit.
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