Efficient synthesis of cytotoxic quinones: 2-Acetyl-4<i>H</i>,9<i>H</i>-naphtho[2,3-<i>b</i>]furan-4,9-dione (<b>6</b>) and (±)-2-(1-hydroxyethyl)-4<i>H</i>,9<i>H</i>-naphtho[2,3-<i>b</i>]furan-4,9-dione (<b>7</b>)
作者:Cláudio C. Lopes、Rosangela S. C. Lopes、Antonio V. Pinto、Paulo R. R. Costa
DOI:10.1002/jhet.5570210274
日期:1984.3
From the ethanol extract of the stem bark of Tabebuia cassinoides (Lam.) DC (Bignoniaceae), Kingston and Rao [1] isolated two new furonaphthoquinones 6 and 7 that showed activity in KB cell culture assay (ED50 1.0 and 2.0 μg/ml, respectively). These values may be significant since lapachol, which has an ED50 value of 4.4 μg/ml in the same assay, showed sufficient in vivo activity to reach clinical
金斯敦和饶[1]从毒死bu(Lase。Tabsbuia cassinoides(Lam。)DC(Bignoniaceae))的乙醇提取物中分离出两个新的呋喃萘醌6和7,它们在KB细胞培养测定中具有活性(ED 50 1.0和2.0μg/ ml)。 , 分别)。这些值可能很重要,因为在同一试验中拉帕酚的ED 50值为4.4μg / ml,显示出足够的体内活性,可以在美国国家癌症研究所进行临床试验。这些化合物(6和7)的合成以呋喃和邻苯二甲酸酐为原料,总收率为36%。