Stereoselective synthesis of a (5R,6S)-6-[(R)-1-hydroxyethyl]-2-thioxo-penam ester through a hydroxy group directed chlorinolysis
作者:Nick Daniels、Graham Johnson、Barry C. Ross
DOI:10.1039/c39830001006
日期:——
Hydroxy group directed chlorinolysis of (3S,4R)-3-[(R)-1-hydroxyethyl]-4-ethylthioazetidin-2-one (4) gives predominantly the corresponding (4S)-4-chloroazetidinone (5) which is cyclised to the (5R,6S)-6[(R)-1-hydroxyethyl]-2-thioxopenam (1).
(3 S,4 R)-3-[(R)-1-羟乙基] -4-乙基硫氮杂环丁烷-2-one(4)的羟基直接氯化反应主要产生相应的(4 S)-4-氯氮杂环丁酮(5)将其环化成(5 R,6 S)-6 [(R)-1-羟乙基] -2-硫代己糖胺(1)。