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Total synthesis of starfish saponin goniopectenoside B

Guozhi Xiao1, Biao Yu

  • 1State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, PR China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|May 8, 2013
PubMed

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Esters to Carboxylic Acids: Saponification01:25

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Esters can be hydrolyzed to carboxylic acids under acidic or basic conditions. Base-promoted hydrolysis of esters is a nucleophilic acyl substitution reaction in which esters react with an aqueous base, followed by an acid to give carboxylic acids. This reaction is also known as saponification because it forms the basis for making soaps from fats.
The reaction requires a base in stoichiometric amounts, which participates in the reaction and is not regenerated later. So, the base acts as a...