Cantharidin analogues: synthesis and evaluation of growth inhibition in a panel of selected tumour cell lines
作者:Adam McCluskey、Stephen P Ackland、Michael C Bowyer、Monique L Baldwin、James Garner、Cecilia C Walkom、Jennette A Sakoff
DOI:10.1016/s0045-2068(02)00524-2
日期:2003.2
(7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic aid monoethyl ester) (6). Subsequent transesterification affords a series of monoesters (7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid monomethyl ester (7)), 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid monopropyl ester (8), (7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid monohexyl ester (9)) and differentially substituted diesters (7-oxabicyclo[2.2.1]heptane-2
Diels-Alder将呋喃(呋喃,糠醇和3-溴呋喃)添加到苹果酸酐中可得到三种不同的5,6-脱氢降冰片烷素。在无水乙醇中氢化(4,10-二氧杂三环[5.2.1.0]癸烷-3,5-二酮)(4a),得到单酯(7-氧杂双环[2.2.1]庚烷-2,3-二羧酸辅助单乙酯)(6)。随后的酯交换反应得到一系列单酯(7-氧杂双环[2.2.1]庚烷-2,3-二羧酸单甲酯(7),7-氧杂双环[2.2.1]庚烷-2,3-二羧酸单丙酯( 8),(7-氧杂双环[2.2.1]庚烷-2,3-二羧酸单己酯(9)和差异取代的二酯(7-氧杂双环[2.2.1]庚烷-2,3-二羧酸2-乙基酯酯3-异丙基酯)(10)和(7-氧杂双环[2.2.1]庚烷-2,3-二羧酸2-乙基酯3-苯基酯)(11)。首先筛选类似物以抑制蛋白质磷酸酶1(PP1)和2A(PP2A)的能力,因为先导化合物th他汀(1)和降冰素烷(2)是已知的PP1和PP