作者:Yarram Narasimha Reddy、Tenkayala Navya Kumari、Pradeepkumar Thota、Perla Jyothi、Ajay Kumar Gupta
DOI:10.1016/j.tetlet.2017.12.014
日期:2018.1
A new chemoenzymatic route for the preparation of cryptocaryalactones natural products using a kinetic resolution process as the key step is described. Novozyme-435 catalyzed hydrolysis of the prochiral (±)-monoester 7 afforded the precursors of cryptocaryalactones with high enantiomeric excess and excellent yields. The compounds (4S,6S)-7 and (4R,6R)-7 were converted to (+)-(6R,2′S)-cryptocaryalactone
描述了一种新的化学酶法路线,该路线以动力学拆分过程为关键步骤,用于制备隐甲酰内酯天然产物。Novozyme-435催化前手性(±)-单酯7的水解,提供了对映体过量且产率高的隐烯丙基内酯的前体。将化合物(4 S,6 S)-7和(4 R,6 R)-7转化为(+)-(6 R,2 'S)-隐芳内酯(1)和(-)-(6 S, 2' - [R)-cryptocaryalactone(2),分别采用Wittig-烯烃化,内酯化和酰化反应。