| 摘要 |
1,2,3,4-Tetrazolyl-L-alanine and its derivatives, 1,2,3-triazolyl-L-alanine and its derivatives and S-heteroaryl-L-cysteines are new. An independent claim is also included for the production of non-proteinogenic L-amino-acids (I) by direct fermentation of a known strain of microorganism (II) with a deregulated cysteine substance exchange in known manner, in which a nucleophilic compound (III) is added during fermentation in an amount leading to (I) production by (II). |
