(2S,4R,5R)-N-[2-(carbonylmethyl)-4-methyl-1,3-dioxan-5-yl]phenylacetamide 、
L-色氨酸甲酯 在
sodium sulfate 作用下,
以
氯仿 为溶剂,
反应 60.0h,
以55%的产率得到methyl (1R,3S,2'S,4'R,5'R)-1-(5'-phenylacetamino-4'-methyl-1',3'-dioxan-2'-yl)methyl-1,2,3,4-tetrahydro-β-carboline-3-carboxylate