Total synthesis of (.+-.)-silybin, an antihepatotoxic flavonolignan.
作者:HITOSHI TANAKA、MASAYOSHI SHIBATA、KAZUO OHIRA、KAZUO ITO
DOI:10.1248/cpb.33.1419
日期:——
The flavonolignan (±)-silybin (1), having an antihepatotoxic activity, has been synthesized via a key intermediate (9), which was prepared from readily available starting materials (2) and (3). The aldehyde (9) was transformed to the methoxymethyl ether (10), which was condensed with an acetophenone derivative (11) to yield the chalcone (12). Oxidation of the chalcone (12) with alkaline hydrogen peroxide, followed by treatment of the resulting epoxide (13) with hydrochloric acid afforded (±)-1.
具有抗肝毒性活性的黄酮木脂素(±)-水飞蓟宾(1)是通过一个关键的中间体(9)合成的,该中间体是由容易获得的起始原料(2)和(3)制备的。醛(9)转化为甲氧基甲基醚(10),与苯乙酮衍生物(11)缩合生成查尔酮(12)。用碱性过氧化氢氧化查尔酮 (12),然后用盐酸处理生成的环氧化物 (13),得到 (±)-1。