Enantioselective Synthesis of the Key Intermediate of the Acyl-CoA. Cholesterol Acyltransferase (ACAT) Inhibitor (R-106578) Using 2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl (BINAP)-Ru(OAc)2 as a Catalyst.
作者:Masayuki MURAKAMI、Keijiro KOBAYASHI、Koichi HIRAI
DOI:10.1248/cpb.48.1567
日期:——
Acidic segment of an acyl-CoA : cholesterol acyltransferase (ACAT) inhibitor, R-106578 was synthesized by enantioselective hydrogenation of the Z-olefine (9-(Z)) using (R)-2, 2'-bis(diphenylphosphino)-1, 1'-binaphthyl(BINAP)-Ru(OAc)2 as a catalyst in methanol at 100°C, 5kgf/cm2 of H2 pressure. The requisite Z-olefine was prepared regioselectively via coumarin derivative (5).
通过使用(R)-2, 2'-二(二苯基磷)-1, 1'-联萘(BINAP)-Ru(OAc)2催化剂,在100°C、5kgf/cm²的氢气压力下,在甲醇中对Z-烯烃(9-(Z))进行选择性氢化合成了酸性部分的酰基CoA: 胆固醇酰基转移酶(ACAT)抑制剂R-106578。所需的Z-烯烃是通过香豆素衍生物(5)区域选择性地制备的。