| http://www.w3.org/ns/prov#value | - Step 26: Compound (31) may be prepared from compound (6) wherein R1 represents something other than a hydrogen atom and R2 represents a benzyl group, for example, by reacting the hydroxyl group of compound (6) with a compound of formula L1COR5 or formula R5COOCOR5 either in an inert solvent, examples of which include hydrocarbon type solvents such as benzene, toluene and hexane; halogen type solve
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