C-(5-methylfuran-2-yl)-C-(3-methyloxetan-3-yl)methylamine 、
3-ethoxy-4-[2-hydroxy-3-((R)-3-hydroxypyrrolidine-1-carbonyl)phenylamino]-cyclobut-3-ene-1,2-dione 在
甲醇 、 silica gel 、 80G 、
methanol-dichloromethane 作用下,
以
甲醇 为溶剂,
反应 77.0h,
以694 mg of 3-[2-hydroxy-3-((R)-3-hydroxypyrrolidine-1-carbonyl)phenylamino]-4-{[(5-methylfuran-2-yl)-(3-methyloxetan-3-yl)methyl]amino}cyclobut-3-ene-1,2-dione were obtained in the form of an orange amorphous solid的产率得到3-[2-hydroxy-3-((R)-3-hydroxypyrrolidine-1-carbonyl)phenylamino]-4-{[(5-methylfuran-2-yl)-(3-methyloxetan-3-yl)methyl]amino}cyclobut-3-ene-1,2-dione