dimethyl 4-hexadecyloxy-3(R)-[N-(N'-methylcarbamoyl)-N-methylcarbamoyl]-1-butanephosphonate   、                                                                                      alkaline earth salt of/the/ methylsulfuric acid                                                                                                                                                              在
                                                                                                                                                                                 
三甲基溴硅烷   、                                                                                                  
吡啶   、                                                                                                  
三氯乙腈                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以68%的产率得到2'-(trimethylammonio)ethyl 4-hexadecyloxy-3(R)-[N-(N'-methylcarbamoyl)-N-methylcarbamoyl]-1-butanephosphonate