sodium hydroxide   、                                                                                      Rac-alpha-[[[1-[(2-hydroxyethyl)carbamoyl]-1-methylethyl]sulfonyl]methyl]hydrocinnamic acid   、                                                                                      
水   、                                                                                      
乙醇                                                                                                                                                              在
                                                                                                                                                                                 
sodium hydroxide   、                                                                                                  
乙醚   、                                                                                                  
碳酸氢钠   、                                                                                                  
Sodium sulfate-III                                                                                                                                  作用下,
                                                                                                                                                                                                                            以There was obtained ethyl (R)-α-[[[1-[(2-hydroxyethyl)carbamoyl]-1-methylethyl]sulfonyl]methyl]hydrocinnamate as a yellowish oil的产率得到ethyl (R)-α-[[[1-[(2-hydroxyethyl)carbamoyl]-1-methylethyl]sulfonyl]methyl]hydrocinnamate