New 3-methyl-3-nitrosoureido derivatives of the following amino sugars were prepared as analogs of streptozotocin with the anomeric carbon protected, by nitrosating the methylureas in water with N.sub.2 O.sub.3 : 3-amino-3-deoxy-1,2-O-isopropylidene-.alpha.-D-ribofuranose; methyl 3-amino-3-deoxy-.beta.-D-xylopyranoside; methyl 3-amino-3-deoxy-.alpha.-D-altropyranoside; methyl 3-amino-3-deoxy-.alpha.-D-glucopyranoside; and methyl 3-amino-2,3,6-trideoxy-.alpha.-L-lyxohexopyranoside. Tests against murine leukemia L1210 show that the anticancer activity of streptozotocin not only was retained but was enhanced in most of these derivatives.
以下
氨基糖的新3-甲基-3-亚硝基
脲衍
生物被制备为链
脲霉素的类似物,其中异常碳被保护,通过在
水中用N.sub.2 O.sub.3亚
硝酰基化甲基
脲:3-
氨基-3-去氧-1,2-O-异丙基-α-
D-核糖呋喃糖;甲基3-
氨基-3-去氧-β-
D-木糖苷;甲基3-
氨基-3-去氧-α-D-戊糖苷;甲基3-
氨基-3-去氧-α-
D-葡萄糖苷;和甲基3-
氨基-2,3,6-三去氧-α-L-利克索巴糖苷。对小鼠白血病L1210的实验表明,链
脲霉素的抗癌活性不仅得到保留,而且在这些衍
生物中大多数情况下得到增强。