Optimized Synthesis of l-m-Tyrosine Suitable for Chemical Scale-Up
摘要:
This paper demonstrates how L-m-tyrosine 1 can be synthesized on larger-scale via enzyme-catalyzed kinetic resolution of N-acyl m-tyrosine methyl ester 4. N-Acyl m-tyrosine methyl ester 4 was prepared by a modification of Erlenmeyer's azalactone synthesis followed by hydrogenation of the resultant dehydroamino acid 12. The optimized four-step synthesis utilizes cheap and readily available starting materials and circumvents difficult purification protocols.
The genetic incorporation of thirteen novel non-canonical amino acids
作者:Alfred Tuley、Yane-Shih Wang、Xinqiang Fang、Yadagiri Kurra、Yohannes H. Rezenom、Wenshe R. Liu
DOI:10.1039/c3cc49068h
日期:——
Thirteen novel non-canonical amino acids were synthesized and tested for suppression of an amber codon using a mutant pyrrolysyl-tRNA synthetase–tRNAPylCUA pair.
The present invention relates to new substituted hydroxyphenylamine based modulators of hormone and/or pigment levels, pharmaceutical compositions thereof, and methods of use thereof.