[(η-C5H4R)Fe(CO)2X], X = Cl, Br, I, NO3, CO2Me and [(η-C5H4R)Fe(CO)3]+, R = (CH2)nCO2Me (n = 0–2), and CO2CH2CH2OH: a new group of CO-releasing molecules
作者:David Scapens、Harry Adams、Tony R. Johnson、Brian E. Mann、Philip Sawle、Rehan Aqil、Trevor Perrior、Roberto Motterlini
DOI:10.1039/b704832g
日期:——
A new group of CO-releasing molecules, CO-RMs, based on cyclopentadienyl iron carbonyls have been identified. X-Ray structures have been determined for [(η-C5H4CO2Me)Fe(CO)2X], X = Cl, Br, I, NO3, CO2Me, [(η-C5H4CO2Me)Fe(CO)2]2, [(η-C5H4CO2CH2CH2OH)Fe(CO)2]2 and [(η-C5H4CO2Me)Fe(CO)3][FeCl4]. Half-lives for CO release, 1H, 13C, and 17OC NMR and IR spectra have been determined along with some biological data for these compounds, [(η-C5H4CO2CH2CH2OH)Fe(CO)3]+ and [η-C5H4(CH2)nCO2Me}Fe(CO)3]+, n = 1, 2. More specifically, cytotoxicity assays and inhibition of nitrite formation in stimulated RAW264.7 macrophages are reported for most of the compounds analyzed. [(η-C5H5)Fe(CO)2X], X = Cl, Br, I, were also examined for comparison. Correlations between the half-lives for CO release and spectroscopic parameters are found within each group of compounds, but not between the groups.
一组基于环戊二烯基铁碳基化合物的新型释放一氧化碳分子(CO-RMs)已被确认。已确定[(η-C5H4CO2Me)Fe(CO)2X]的X射线结构,其中X包括Cl、Br、I、NO3、CO2Me,及[(η-C5H4CO2Me)Fe(CO)2]2、[(η-C5H4CO2CH2CH2OH)Fe(CO)2]2和[(η-C5H4CO2Me)Fe(CO)3][FeCl4]。这些化合物的CO释放半衰期、1H、13C和17OC NMR以及红外光谱已被确定,并提供了一些生物数据,包括[(η-C5H4CO2CH2CH2OH)Fe(CO)3]+和[η-C5H4(CH2)nCO2Me}Fe(CO)3]+(n = 1, 2)。更具体地说,针对大多数分析化合物,在刺激的RAW264.7巨噬细胞中进行了细胞毒性实验和亚硝酸盐形成抑制实验。此外,还对[(η-C5H5)Fe(CO)2X](X = Cl、Br、I)进行了比较研究。在每组化合物中,CO释放的半衰期与光谱参数之间存在相关性,但不同组之间则没有。