Aromatase Inhibitors: Synthesis, Biological Activity, and Structure of 1,2-Imidazolylmethylcyclopentanol Derivatives.
作者:Akira KATO、Yuko IKEDA、Norifumi SUGITA、Toyohiko NITTA、Hiroyuki ENARI、Akiko KASHIMA、Michiko KONNO、Koichi NIIMURA
DOI:10.1248/cpb.43.2152
日期:——
Two series of 1, 2-disubstituted imidazolylmethylcyclopentanol derivatives (5a-d, 10a-d) were prepared by using easily available metyl 2-oxocyclopentanecarboxylate as the starting material. Evaluation of the aromatase inhibitory activities in vitro was performed. Their activities were compared with those of a steroidal aromatase inhibitor, Formestane, and a non-steroidal inhibitor, Fadrozole. Among these compounds, the aromatase inhibitory activities of 5d, 10a, 10b, 10c, 11a, 15a, and 15b were more potent than Formestane. One compound, 1-(4-chlorobenzyl)-cis-2-(1H-imidazol-1-ylmethyl)cyclopentanol (10a) was in particular identified as a potent aromatase inhibitor in vitro, exhibiting an IC50 value of 4×10-8M. The enantiomers of 10a were separated, and their absolute configurations were determined by X-ray crystallography.
使用易于获得的甲基2-氧代环戊烷羧酸酯作为起始原料,制备了两系列1,2-二取代咪唑甲基环戊醇衍生物(5a-d, 10a-d)。进行了体外芳香酶抑制活性评估,并与甾体芳香酶抑制剂福美坦和非甾体抑制剂法乐唑进行了活性比较。在这些化合物中,5d、10a、10b、10c、11a、15a和15b的芳香酶抑制活性比福美坦更强。特别是1-(4-氯苄基)-顺-2-(1H-咪唑-1-基甲基)环戊醇(10a)被鉴定为强效体外芳香酶抑制剂,显示IC50值为4×10^-8M。10a的对映体被分离,并通过X射线晶体学确定了其绝对构型。