Use of a compound of formula (I), wherein each R, which are the same or different, is H or C
1
-C
6
alkyl, and X completes a ring which is a substituted triazine having one of the following formulae (II) to (IV), wherein R′ is H or C
1
-C
6
alkyl; or an enol tautomer of a compound of formula (I) in which any of the groups R or R′ is hydrogen; in the manufacture of a medicament for use as a protein tyrosine phosphatase (PTP) inhibitor. Formula (I) embraces 2-methylfervenulone, which can be produced by fermentation of a novel microbial strain. Fermentation of the said strain also produces novel precursors to 2-methylfervenulone having utility as prodrugs.
1
使用式 (I) 的化合物,其中每个 R(相同或不同)为 H 或 C
1
-C
6
烷基,X 构成一个环,该环是具有下式(II)至(IV)之一的取代三嗪,其中 R′是 H 或 C
1
-C
6
烷基;或式(I)化合物的烯醇同系物,其中任一基团 R 或 R′为氢;用于制造用作蛋白
酪氨酸磷酸酶(
PTP)
抑制剂的药物。式(Ⅰ)包括 2-甲基
铁酮,可通过新型微
生物菌株发酵生产。上述菌株的发酵还可产生新型的 2-甲基阿魏酰前体,可用作原药。
1