Catalytic asymmetric synthesis of (S)-oxybutynin and a versatile intermediate for antimuscarinic agents
作者:Shuji Masumoto、Masato Suzuki、Motomu Kanai、Masakatsu Shibasaki
DOI:10.1016/j.tet.2004.08.081
日期:2004.11
using catalytic enantioselective cyanosilylation of cyclohexyl phenyl ketone (9a) as a key step is described. The key reaction proceeded with 94% ee using 1 mol% of Gd-1 catalyst, and was performed on a 100 g-scale. In addition, a short catalytic enantioselective synthesis of the versatile intermediate for Scios Nova analogues of antimuscarinic agents (7) is described. Application of the catalytic enantioselective
描述了使用环己基苯基酮(9a)的催化对映选择性氰基甲硅烷化作为关键步骤,实际合成毒蕈碱受体拮抗剂(S)-奥昔布宁的方法。使用1mol%的Gd- 1催化剂,以94%ee进行关键反应,并以100g规模进行。另外,描述了抗毒蕈碱剂的Scios Nova类似物的通用中间体的短催化对映选择性合成(7)。还讨论了催化对映体选择性氰基硅烷化作用对在羰基上包含两个空间相似取代基的酮的应用。