154161-00-9Relevant articles and documents
Highly Stereoselective Synthesis of cis-(2R,3S)-3-Hydroxyproline
Jurczak, Janusz,Prokopowicz, Piotr,Golebiowski, Adam
, p. 7107 - 7110 (1993)
Allyltrimethylsilane (5) reacted with N-carbobenzoxy-O-tert-butyldimethylsilyl-L-serinal (4) to give with high diastereoselectivity syn-adduct 3 which was subsequently transformed into cis-(2R,3S)-3-hydroxyproline (1).
The stereochemical course of addition of allyltrimethylsilane to protected L-alaninals and L-serinals in the presence of Lewis acids. Total synthesis of cis-(2R,3S)-3-hydroxyproline
Gryko,Prokopowicz,Jurczak
, p. 1103 - 1113 (2007/10/03)
The influence of Lewis acids on the diastereoselectivity of the addition of allyltrimethylsilane to variously protected L-alaninals and L-serinals was investigated and high levels of asymmetric induction were achieved. Stereochemical models for rationalisation of the results obtained are proposed. cis-(2R,3S)-3-Hydroxyproline was synthesised starting from N-Cbz, O-TBS-L-serinal, in which the crucial step involves addition of allyltrimethylsilane to the aldehyde in the presence of SnCl4.