were achieved in 12–13 steps from commercially available (−)-abietic acid (5). All synthesized compounds, including intermediates and derivatives, were evaluated for antiproliferative activity against five human tumor cell lines. A structure–activity relationship study revealed no significant difference between Pf E and 4-epi-Pf E, the importance of two oxygen functional groups at C-11 and C-12 for antiproliferative
4-第一合成外延-parviflorons A,C,和E(4-外延-1 - 3)( - ) -
松香酸(均在12-13的步骤由可商购获得5)。评价所有合成的化合物,包括中间体和衍
生物,对五种人类肿瘤
细胞系的抗增殖活性。构效关系研究表明,Pf E和4- Epi之间无显着差异-Pf E,C-11和C-12处两个氧官能团对于抗增殖活性的重要性,以及C-4处的甲氧羰基和C-12处具有吸电子基团的
苯甲酸酯或OH处的羟甲基的组合C-4和适当的B-C环氧化态对三阴性乳腺癌细胞的选择性。