摘要
以4-苄氧-3-硝基苯乙酮为原料,经溴代、不对称还原、选择性还原硝基和甲酰化,合成(R,R)-福莫特罗关键中间体(母核)(R)-N-[2-苄氧基-5-(2-溴-1-羟乙基)苯基]甲酰胺(2),为进一步研究开发奠定基础.目标化合物的结构经IR1、HNMR、MS等确证,4步收率达41%.
( R )-N- [ 2- (benzyloxy) -5- (2-bromo-1-hydroxyethyl ) phenyl ] formamide ( 2 ), the key intermediate of (R, R )-formoterol, was synthesized starting from 4-benyloxy-3-nitroate phenone via bromination, asymmetric reduction, selective reduction of nitro group and formylation. The proposed method is feasible to synthesize the title compound and is suitable for large-scale preparation. The chemical structure of the target compound was confirmed by IR, 1^HNMR and MS. The title compound was obtained in 41% overall yield.
出处
《四川大学学报(自然科学版)》
CAS
CSCD
北大核心
2008年第3期628-630,共3页
Journal of Sichuan University(Natural Science Edition)