The synthetic and biological studies of discorhabdins and related compounds
作者:Yasufumi Wada、Yu Harayama、Daigo Kamimura、Masako Yoshida、Tomoyuki Shibata、Kousaku Fujiwara、Koji Morimoto、Hiromichi Fujioka、Yasuyuki Kita
DOI:10.1039/c1ob05058c
日期:——
Various analogues of the marine alkaloids, discorhabdins, have been synthesized. The strategy contains spirocyclization with phenyliodine(III) bis(trifluoroacetate) (PIFA), oxidative fragmentation of the β-amino alcohols with the hypervalent iodine reagent C6F5I(OCOCF3)2, the detosylation and dehydrogenation reaction of the pyrroloiminoquinone unit in the presence of a catalytic amount of NaN3 and
已经合成了海洋生物碱的各种类似物discorhabdins。该策略包含螺环化苯碘(III)双(三氟乙酸盐) (PIFA), β-氨基 高价酒精碘 试剂 C 6 F 5 I(OCOCF 3)2的脱甲苯基化和脱氢反应 吡咯亚氨基醌 催化量的 NaN 3 和桥接醚合成 溴化氢–醋酸作为关键反应。所有合成的化合物通过评价在体外MTT 对人结肠癌细胞系的细胞毒活性试验 HCT-116。此外,discorhabdin A氧杂 还评估了类似物是否针对四种肿瘤模型细胞,即人结肠癌细胞系(威德),是人类前列腺癌细胞系(DU-145)和鼠白血病细胞系(P388和 L1210)。为了鉴定目标,discorhabdin A和discorhabdin A氧杂 类似物由 肝癌专门小组分析。在测试中,discorhabdins对肿瘤细胞可能具有新的作用方式。
Synthesis of Antitumor Marine Alkaloid Discorhabdin A Oxa Analogues
作者:Yasufumi Wada、Kouji Otani、Noriko Endo、Yu Harayama、Daigo Kamimura、Masako Yoshida、Hiromichi Fujioka、Yasuyuki Kita
DOI:10.1021/ol901471r
日期:2009.9.17
Discorhabdin A (1) exhibits a strong cytotoxic activity in vitro, but it is difficult to synthesize and handle due to the instability of its highly strained N,S-acetal structure. We then designed the analogues of discorhabdin A which also have strong cytotoxic activity and stability. The synthesis and examination of the biological activity of various types of stable discorhabdin A oxa analogues (2)
Discorhabdin A(1)在体外表现出很强的细胞毒性活性,但由于其高度拉紧的N,S-缩醛结构的不稳定性,因此难以合成和处理。然后,我们设计了Discorhabdin A的类似物,它们也具有很强的细胞毒活性和稳定性。合成和检查了各种类型的稳定Discorhabdin A oxa类似物(2)的生物活性。
Synthetic Studies on the Sulfur-Cross-Linked Core of Antitumor Marine Alkaloid, Discorhabdins: Total Synthesis of Discorhabdin A This work was supported by a Grant-in-Aid for Scientific Research (S) (No. 13853010), for Scientific Research on Priority Area (A) (No. 13029062), and for the Encouragement of Young Scientists (No. 13771331) from the Ministry of Education, Science, Sports, and Culture, Japan. H.T. also thanks the Hoh-ansha Foundation for a research fellowship. We thank Professor Murray H. G. Munro (University of Canterbury) for providing a copy of spectroscopic data of natural discorhabdin A.
作者:Hirofumi Tohma、Yuu Harayama、Miki Hashizume、Minako Iwata、Masahiro Egi、Yasuyuki Kita