Du Hai-jun
2007
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Journal
Chinese Journal of Pharmaceuticals
Abstract
Ethyl (S)-2-ethoxy-3-(4-hydroxyphenyl)propionate was synthesized from L-tyrosine by O- benzylation and diazotization to give (S)-2-hydroxy-3-(4-benzyloxyphenyl)propionic acid, which was subjected to O-ethylation and esterifi cation followed by catalytic hydrogenated debenzylation with an overall yield of 19% and 98.5%ee.