[EN] L-Y-METHYLENEGLUTAMINE COMPOUNDS AND METHODS OF USE<br/>[FR] COMPOSÉS DE L-Y-MÉTHYLÈNEGLUTAMINE ET PROCÉDÉS D'UTILISATION
申请人:UNIV MISSISSIPPI
公开号:WO2021011492A1
公开(公告)日:2021-01-21
Disclosed are substantially pure L-y-methyleneglutamine, L-y- methyleneglutamic acid, and/or amide derivatives, and methods of use thereof. In particular, the presently disclosed subject matter relates to L-y-methyleneglutamine, L-y-methyleneglutamic acid, and/or amide derivatives thereof, and methods of treating cancer. The method comprises administering one or more substantially pure L-y-methyleneglutamine, L-y-methyleneglutamic acid, and/or amide derivatives to a subject in need thereof.
Tumor targeting units are disclosed which have a peptide sequence C
y
—Y—G-F—X—W-G-Z-C
yy
(SEQ ID NO: 25), or a pharmaceutically or physiologically acceptable salt thereof. Tumor targeting agents are also disclosed having at least one targeting unit, directly or indirectly coupled to at least one effector unit. Diagnostic or pharmaceutical compositions having at least one targeting unit or at least one targeting agent, and targeting units or targeting agents for the preparation of a medicament for the treatment of cancer related diseases (including cancer), especially for the treatment of colon/colorectal cancer or its metastases are also disclosed.
4-Methyleneglutamine synthetase: A new amide synthetase present in germinating peanuts
作者:Harry C. Winter、Ti-Zhi Su、Eugene E. Dekker
DOI:10.1016/0006-291x(83)90332-7
日期:1983.3
catalyzes the synthesis of 4-methyleneglutamine from 4-methyleneglutamic acid + ammonia was detected in and partially purified from cotyledons of peanut seeds germinated 5 to 7 days. This activity was separated from glutamine and asparagine synthetases by ammonium sulfate precipitation and DEAE-cellulose chromatography. The enzyme is distinct from these other amidesynthetases in its substrate specificity
Purified &bgr;-amino acids are of considerable interest in the preparation of pharmacologically active compounds and industrial precursors. Although enantiomerically pure &bgr;-amino acids can be produced by standard chemical synthesis, this traditional approach is time consuming, requires expensive starting materials, and results in a racemic mixture which must be purified further. However, DNA molecules encoding lysine 2,3-aminomutase can be used to prepare &bgr;-amino acids by methods that avoid the pitfalls of chemical synthesis. The present invention provides a method of producing enantiomerically pure &bgr;-amino acids from &agr;-amino acids comprising catalyzing the conversion of an &agr;-amino acid to a corresponding &bgr;-amino acid by utilizing a lysine 2,3-aminomutase as the catalyst.
纯化的&bgr;-氨基酸在制备药理活性化合物和工业前体方面具有相当大的意义。虽然对映体纯的&bgr;-氨基酸可以通过标准化学合成法生产,但这种传统方法耗时长,需要昂贵的起始原料,而且会产生外消旋混合物,必须进一步纯化。然而,编码赖氨酸 2,3-氨基转化酶的 DNA 分子可以用来制备 &bgr;-氨基酸,其方法避免了化学合成的缺陷。本发明提供了一种从&agr;-氨基酸制备对映体纯&bgr;-氨基酸的方法,包括利用赖氨酸 2,3-氨基转化酶作为催化剂,催化&agr;-氨基酸转化为相应的&bgr;-氨基酸。
THREE NEW NON-POLYGLUTAMATABLE DEAZAAMINOPTERINS AND PROCESS FOR PREPARING THE SAME