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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为重结晶溶剂采用微 ... -
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 ...