(5R,6S,E)-isopropyl 5-acetamido-8-ethyl-6-hydroxy-2,2-dimethoxydec-3-enoate                                                                                                                                                              在
                                                                                                                                                                                 iron(III) chloride hexahydrate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以75%的产率得到2-methyl-(isopropyl 5-acetamido-2,6-anhydro-7-cyclopentyl-3,5,7-trideoxy-D-altro-hetp-2-enoate)-[4,5-d]-2-oxazoline