Synthesis and biological activity of selenopsammaplin A and its analogues as antitumor agents with DOT1L inhibitory activity
作者:Hae Ju Han、Woong Sub Byun、Gyu Ho Lee、Won Kyung Kim、Kyungkuk Jang、Sehun Yang、Jewon Yang、Min Woo Ha、Suckchang Hong、Jeeyeon Lee、Jongheon Shin、Ki Bong Oh、Sang Kook Lee、Hyeung-geun Park
DOI:10.1016/j.bmc.2021.116072
日期:2021.4
cells and inhibitory activity toward DOT1L for antitumor potential. All synthetic selenopsammaplin A analogues exhibited the higher cytotoxicity compared to psammaplin A with up to 6 – 60 times depending on cancer cells, and most analogues showed significant inhibitory activities against DOT1L. Among the prepared analogues, the phenyl analogue (10) possessed the most potent activity with both cytotoxicity
Disruptor of telomer silencing-1 like (DOT1L) 是一种组蛋白 H3 甲基转移酶,可特异性催化组蛋白 H3 赖氨酸 79 残基的甲基化。最近的研究结果表明,DOT1L 异常过度表达,而上调的 DOT1L 引起人乳腺癌细胞的增殖和转移。因此,DOT1L 抑制剂被认为是治疗乳腺癌的一种有前景的策略。本研究首次报道了非核苷 DOT1L 抑制剂 selenopsammaplin A 及其类似物。Selenopsammaplin A 是新设计和合成的,由 3-bromo-4-hydroxybenzaldahyde 分 8 步以 25% 的总产率合成,并制备了 13 个 selenopsammaplin A 类似物,用于研究它们对癌细胞的细胞毒性和对 DOT1L 的抑制活性的构效关系研究。抗肿瘤潜力。与 psammaplin A 相比,所有合成的 selenopsammaplin
A Facile General Route to α-Keto Esters and α-Diketones
作者:Zong-xing Si、Xian-yun Jiao、Bing-fang Hu
DOI:10.1055/s-1990-26922
日期:——
A novel synthetic route to α-keto esters and α-diketones through ozonolytic fragmentation of α-substituted acetoacetic esters and α-substituted acetylacetones is described.
after oral administration, to improve selectivity for SGLT2 and oral bioavailability. O-glucoside derivative 24 (remogliflozin etabonate) was subsequently identified as a potent, highly selective, and orally available SGLT2 inhibitor.