Oleic acid Guanosine Leucine Galactose Tryptophan CMP Part III Problems 1. Guaiol, a sesquiterpene found in the sap of certain trees, turns blue when it reacts with peroxides. This reaction was used as a test for peroxide in the 19 th century. Waxes are common in nature. They provide the water-repellent surfaces to fruits, skin, and feathers among other things.
Waxes are esters of formed from long-chain alcohols and a fatty acid.
Starting with two molecules of palmitic acid , propose a biosynthetic pathway for the wax shown below. The cofactors for the individual enzymes are omitted but you will need to know them. Trace the labeled carbons and show which carbons of phenylalanine would be labeled. Do not do this until you have completed the rest of the examination. Fragments of the last part of this pathway from a KA to AcCoA are shown below.