dammarenoyl-L-phenylalanine methyl ester                                                                                                                                                              在
                                                                                                                                                                                 sodium hydroxide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃   、                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        以80%的产率得到N-{3-[(3S,3aR,5aR,6S,7S,9aR,9bR)-dodecahydro-3-[(2S)-2-hydroxy-6-methylhept-5-en-2-yl]-6,9a,9b-trimethyl-7-(prop-1-en-2-yl)-1H-cyclopenta[a]naphthalen-6-yl]propanoyl}-L-phenylalanine