157157-65-8

Upstream product

• 154306-90-8 methyl (2R,3S)-2-hydroxy-3-[(S)-1-phenyl]ethylamino-3-(4-dimethylaminophenyl)propionate 
• 154306-89-5 (3R,4S)-3-hydroxy-4-(4-dimethylaminophenyl)-1-[(S)-1-phenyl]ethyl-2-azetidinone 

Downstream Products

• 154306-95-3 C₅₄H₆₄Cl₆N₂O₁₈ 
• 154306-93-1 (4S,5R)-4-(4-Dimethylamino-phenyl)-2,2-dimethyl-oxazolidine-3,5-dicarboxylic acid 3-tert-butyl ester 
• 154306-92-0 (4S,5R)-4-(4-Dimethylamino-phenyl)-2,2-dimethyl-oxazolidine-3,5-dicarboxylic acid 3-tert-butyl ester 5-methyl ester 
• 154306-91-9 methyl (2R,3S)-3-tert-butoxycarbonylamino-2-hydroxy-3-(4-dimethylaminophenyl)propionate 

Relevant academic research and scientific papers

A Practical Access to Chiral Phenylisoserinates, Preparation of Taxotere Analogs

A practical diastereoselective synthesis of phenylisoserine methyl esters 8a-c is described using α-methyl-benzylamine as the chiral template of a Staudinger reaction.Optically pure diastereoisomers 6a-c were easily recovered by crystallization.After opening of these intermediate azetidinones by hydrochloric acid and methanol, regioselective cleavage of the chiral auxiliary was achieved by hydrogenation over palladium.Phenylisoserinates 8b,c were used to prepare analogs of Taxotere.