Three dihydrobenzofuran derivatives 11, 19, 22, a Pummerer's ketone 20 and a dimeric phenylpropanoid 24 were synthesized by oxidative coupling reaction of methyl (E)-3-(4-hydroxy-2-methoxyphenyl)propenoate 10, which was prepared from umbelliferone. The major product 11 was converted into its acetate 21 and schizotenuin D analogs 27, 28, 29. A new coumestan derivative 13 was synthesized from 29. Ten
通过由
伞形酮制备的(E)-3-(
4-羟基-2-
甲氧基苯基)
丙酸甲酯10的氧化偶联反应,合成了三种二氢
苯并呋喃衍
生物11、19、22,Pummerer's酮20和二聚
苯丙酸酯24。将主要产物11转化为其
乙酸盐21和精神分裂素D类似物27、28、29。由29合成新的
香豆素衍
生物13。测试由此获得的十种合成化合物对大鼠脑匀浆中脂质过氧化的抑制作用。