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(3s,6s)-及(3s,6r)-3-苄氧甲基-6-甲基-吗啉-2,5-二酮的制备
以2-溴丙酸和 n-叔丁氧羰基-o-苄基-l-丝氨酸为起始试剂首先制得 n-(2-溴丙基)-o-苄基-l-丝氨酸(bpbs),在n,n-二甲基甲酰胺(dmf)/三乙胺n)溶剂中 80 ℃经9 h 后bpbs发生分子内环化反应生成(3s,6s)-3-苄氧甲基-6-甲基-吗啉-2,5-二酮[(3s,6s)-bmmd]及(3s,6r)-bmmd 共存体,产率70%。 将所制得的共存体以乙酸乙酯为重结晶溶 ... -
synthesis and crystal structures of chiral
abstract n-(2-bromopropionyl)-o-benzyl-l-serine (bpbs) was prepared using 2-bromopropionic acid and n-boc-o-bzl-l-serine as the starting reagents. bpbs underwent the intra-molecular ...

