Ren Zhi-yao
2008
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Journal
Chinese Journal of Synthetic Chemistry
Abstract
3-Amino-L-tyrosine ethyl ester(4) was prepared from L-tyrosine ethyl ester by a three-step reaction of protection of amino group, nitration and reduction. L-tyrosine derivatives with benzoxazole were synthesized by cyclization between 4 and benzaldehyde or substituted benzaldehyde. The structures were characterized by 1H NMR, 13C NMR, IR and elemental analysis.