Synthesis and antitumor activity of certain 3-.beta.-D-ribofuranosyl-1,2,4-triazolo[3,4-f]-1,2,4-triazines related to formycin prepared via ring closure of a 1,2,4-triazine precursor
作者:Kandasamy Ramasamy、Bheemarao G. Ugarkar、Patricia A. McKernan、Roland K. Robins、Ganapathi R. Revankar
DOI:10.1021/jm00161a017
日期:1986.11
Several 3-beta-D-ribofuranosyl-1,2,4-triazolo[3,4-f]-1,2,4-triazines related to formycin were prepared and tested for their antitumor activity in cell culture. Dehydrative coupling of 3-amino-6-hydrazino-1,2,4-triazin-5(4H)-one (5) with 3,4,6-tri-O-benzoyl-2,5-anhydro-D-allonic acid (6a) and further ring closure of the reaction product (7) provided 6-amino-3-(2,3,5-tri-O-benzoyl-beta-D-ribofuranosyl)-1
制备了几种与甲霉素有关的3-β-D-呋喃呋喃糖基-1,2,4-三唑并[3,4-f] -1,2,4-三嗪,并测试了它们在细胞培养中的抗肿瘤活性。3-氨基-6-肼基-1,2,4-三嗪-5(4H)-一(5)与3,4,6-三-O-苯甲酰基-2,5-脱水-D-异壬基的脱水偶联酸(6a)和反应产物(7)的进一步闭环,得到6-氨基-3-(2,3,5-三-O-苯甲酰基-β-D-呋喃呋喃糖基)-1,2,4-三唑并[ 3,4-f] -1,2,4-三嗪-8(7H)-一(8)。5与3,4,6-三-O-苯甲酰基-2,5-脱水-D-丙二酰氯(6b)缩合,然后环环化,也以良好的收率得到8。8的脱苯甲酰作用提供了鸟苷类似物6-氨基-3-β-D-呋喃呋喃糖基-1,2,4-三唑[3,4-f] -1,2,4-三嗪-8(7H)-one(4b )。用P2S5进行8的硫代反应,然后对硫代酸酯的产物进行脱苯甲酰化(11a),得到6-氨基-3-β-D-呋喃呋喃糖基-1