Synthesis and Cytotoxic Activity of Triterpenoid Thiazoles Derived from Allobetulin, Methyl Betulonate, Methyl Oleanonate, and Oleanonic Acid
作者:Lucie Borkova、Richard Adamek、Petr Kalina、Pavel Drašar、Petr Dzubak、Sona Gurska、Jiri Rehulka、Marian Hajduch、Milan Urban、Jan Sarek
DOI:10.1002/cmdc.201600626
日期:2017.3.7
2‐Bromoallobetulone (2 b) methyl 2‐bromobetulonate (3 b), 2‐bromooleanonic acid (5 b), and 2‐thiocyanooleanonic acid (5 c) were best, with IC50 values less than 10 μm against CCRF‐CEM cells (e.g., 3 b: IC50=2.9 μm) as well as 2′‐(diethylamino)olean‐12(13)‐eno[2,3‐d]thiazole‐28‐oic acid (5 f, IC50=9.7 μm) and 2′‐(N‐methylpiperazino)olean‐12(13)‐eno[2,3‐d]thiazole‐28‐oic acid (5 k, IC50=11.4 μm). Compound 5 c leads to
分别从别洛酮,牛磺酸甲基苯磺酸盐,油酸甲酯和齐墩果酸中制备了41种新的三萜类化合物,以研究它们对癌细胞的影响。每个3-氧杂环丁烯在C2处溴化,并用硫氰酸酯取代;随后用适当的铵盐环化,得到N-取代的噻唑。测试了所有化合物对8种癌细胞系和2种非癌性成纤维细胞的体外细胞毒活性。最好的2-Bromoallobetulone(2 b)2-Bromobetulonate(3 b),2-Bromooleanonic acid(5 b)和2-thiocyanooleanonic acid(5 c),相对于CCRF-CEM ,IC 50值小于10μm电池(例如3 b:IC50 = 2.9μ米)以及2' - (二乙氨基)齐墩果-12(13)-eno [2,3- d ]噻唑-28-酸(5 F,IC 50 = 9.7μ米)和2' - (ñ -methylpiperazino)齐墩果-12(13)-eno [2,3-