1.alpha.,25-Dihydroxyvitamin D3 Analogs Featuring Aromatic and Heteroaromatic Rings: Design, Synthesis, and Preliminary Biological Testing
作者:Gary H. Posner、Zhengong Li、M. Christina White、Victoria Vinader、Kazuhiro Takeuchi、Sandra E. Guggino、Patrick Dolan、Thomas W. Kensler
DOI:10.1021/jm00022a019
日期:1995.10
activities in murine keratinocytes at micromolar concentration. No biological advantage was observed in this keratinocyte assay for the doubly modified hybrid analogs 20a-c over the singly modified parent (+)-2b. Analog (+)-2b, but surprisingly not the corresponding analog 20b differing from (+)-2b only in the side chain, showed considerable activity in nongenomic opening of calcium channels in rat osteosarcoma
设计了芳香族化合物2a-c,1 alpha 25-二羟基维生素(骨化三醇1)的类似物以及杂芳香族化合物4a-c和5a-c 19-nor-1 alpha 25-dihydroxyvitamin D3(3)的类似物。模拟其生物有效母体化合物的拓扑结构,同时避免维生素原D平衡。通过将对映体形成的有机锂亲核试剂羰基加成到对映体纯的C,D-上,可以实现类似物(+)-2b,(+)-2c,(-)-4b和(-)-5b的聚合合成。环酮(+)-17,天然骨化三醇(1)的特征。同样,制备杂合类似物20a-c,以确定掺入已知的增强侧链是否会导致生物活性增加。初步的体外生物学测试表明,芳香族类似物(+)-2b,(+)-2c,和20a-c以及杂芳族类似物(-)-4b和(-)-5b对小牛胸腺维生素D受体的亲和力很低,但在鼠角质形成细胞中以微摩尔浓度存在明显的抗增殖活性。在该角质形成细胞测定中,没有观察到与单修饰的亲本(