Six novel carbocyclic oxetanocin A analogs (2-chloro-C.OXT-A; COA-Cl) with various hydroxymethylated or spiro-conjugated cyclobutane rings at the N9-position of the 2-chloropurine moiety were synthesized and evaluated using human umbilical vein endothelial cells. All prepared compounds (2a–f) showed good to moderate activity with angiogenic potency. Among these compounds, 100 µM cis–trans-2′,3′-bis(hydroxymethyl)cyclobutyl derivative (2b), trans-3′-hydroxymethylcyclobutyl analog (2d), and 3′,3′-bis(hydroxymethyl)cyclobutyl derivative (2e) had greater angiogenic activity, with relative tube areas of 3.43±0.44, 3.32±0.53, and 3.59±0.83 (mean±standard deviation (S.D.)), respectively, which was comparable to COA-Cl (3.91±0.78). These data may be important for further development of this class of compounds as potential tube formation agents.
本研究合成了六种新型碳环氧杂
环丁烷 A 类似物(2-
氯-C.OXT-A;COA-Cl),这些类似物在
2-氯嘌呤分子的 N9 位上具有不同的羟甲基化
环丁烷环或螺共轭
环丁烷环,并使用人脐静脉内皮细胞进行了评估。所有制备的化合物(2a-f)都显示出良好至中等程度的活性和血管生成效力。在这些化合物中,100 µM顺式-反式-2′,3′-双(羟甲基)
环丁基衍
生物(2b)、反式-3′-羟甲基
环丁基类似物(2d)和3′,3′-双(羟甲基)
环丁基衍
生物(2e)具有更强的血管生成活性,相对管面积分别为3.43±0.44、3.32±0.53 和 3.59±0.83(平均值±标准偏差 (S.D.)),与 COA-Cl(3.91±0.78)相当。这些数据可能对进一步开发该类化合物作为潜在的试管形成剂具有重要意义。