| http://www.w3.org/ns/prov#value | - When E is a benzoyl group or a (C1-C4)alkylcarbonyl group, the deprotection is effected by hydrolysis in an alkaline medium using, for example, an alkali metal hydroxide such as sodium hydroxide, potassium hydroxide or lithium hydroxide, in an inert solvent such as water, methanol, ethanol, dioxane or a mixture of these solvents, at a temperature between 0??? C. and the reflux temperature of the s
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