作者:BRIAN BANNISTER
DOI:10.7164/antibiotics.25.377
日期:——
The α- and β-methyl glycosides (IV and V, respectively) of the antibiotic streptozotocin (I) have been synthesized. In addition, analogs involving epimeric changes at C2 (III) and C4 (II), and of two C1 analogs, 3-β-Dglucopyranosyl-1-methyl-1-nitrosourea (XXIII) and the corresponding D-galactopyranosyl compound (XXV), together with their tetra-O-acetates (XXII and XXIV, respectively) have been prepared. An open-chain analog was obtained by the synthesis of 1-deoxy-1-(3-methyl-3-nitrosoureido)-D-glucitol (XXIX), but the 2-deoxy-D-glucitol derivative (XXVII) decomposed on attempted isolation. Epimerization at C2 reduces the antibacterial activity markedly; all other changes made destroy it. All of the analogs show cytotoxic activity in the range of streptozotocin or higher, and all are devoid of diabetogenicity.
我们合成了抗生素链脲佐菌素(I)的α-和β-甲基苷(分别为 IV 和 V)。此外,还制备出了涉及 C2(III)和 C4(II)处外延变化的类似物,以及两种 C1 类似物,即 3-β-Dglucopyranosyl-1-methyl-1-nitrosourea (XXIII)和相应的 D-galactopyranosyl 化合物 (XXV),以及它们的四-O-乙酸酯(分别为 XXII 和 XXIV)。通过合成 1-脱氧-1-(3-甲基-3-亚硝基氨基脲)-D-葡萄糖醇(XXIX)获得了一种开链类似物,但 2-脱氧-D-葡萄糖醇衍生物(XXVII)在尝试分离时发生了分解。C2 处的二聚化明显降低了抗菌活性,所有其他变化都破坏了抗菌活性。所有类似物的细胞毒性活性都在链脲菌素或更高的范围内,而且都没有致糖尿病性。