Efficient Semisynthesis of (−)-Pseudoirroratin A from (−)-Flexicaulin A and Assessment of Their Antitumor Activities
作者:Lei Guo、Siu Wai Tsang、Tong-Xin Zhang、Kang-Lun Liu、Yi-Fu Guan、Bo Wang、Han-Dong Sun、Hong-Jie Zhang、Man Shing Wong
DOI:10.1021/acsmedchemlett.7b00033
日期:2017.3.9
natural ent-kaurane diterpenoids show great potential for medical treatment of different pathological conditions including cytotoxicity, antibacterial, and anti-inflammatory activity. Among a variety of diterpenoids tested, (-)-pseudoirroratin A displayed a promising antitumor property in vitro and in vivo. However, this diterpenoid could merely be isolated in a limited amount from a rare source of Isodon
越来越多的证据表明,天然的ENT-月桂烷二萜类化合物在治疗包括细胞毒性,抗菌和抗炎活性在内的不同病理状况方面显示出巨大的潜力。在测试的各种二萜类化合物中,(-)-伪irratin A在体外和体内均显示出有希望的抗肿瘤特性。但是,这种二萜类化合物只能以有限的量从稀有的Isodon pseudoirrorata中分离出来。为了克服这种稀少的来源,我们开发了一种新颖,简便且有效的半合成策略,以从天然(-)-柔藻素A制备(-)-伪iroratin A,可以方便地从柔韧性I.中获得。我们的合成二萜的三维结构和绝对构型已通过X射线晶体学分析确定并确认。更重要的是,我们首次证明了伪irororatin A通过诱导细胞凋亡以及对结肠癌异种移植小鼠模型中肿瘤生长的显着抑制作用,对人大肠癌细胞具有明显的细胞毒性。