作者:Alessandro Dondoni、Alessandro Massi、Simona Sabbatini
DOI:10.1016/s0040-4039(02)01269-8
日期:2002.8
Biginelli cyclocondensation reaction of 3-hydroxybenzaldehyde, ethyl acetoacetate and thiourea afforded the corresponding dihydropyrimidine-2-thione, called monastrol, in 95% isolated yield. The chiral resolution of racemic monastrol, a mitosis blocker by kinesin Eg5 inhibition, was carried out on a preparative scale (ca. 100 mg) through diastereomeric N-3 ribofuranosyl amides.
Yb(OTf)3催化3-羟基苯甲醛,乙酰乙酸乙酯和硫脲的Biginelli环缩合反应,得到相应的二氢嘧啶-2-硫酮,称为monastrol,分离产率为95%。通过非对映异构体N -3呋喃核糖基酰胺的制备规模(约100 mg),通过驱动蛋白Eg5的抑制作用,将手性拆分消旋莫纳斯特罗尔(一种有丝分裂阻滞剂)进行了手性拆分。