PYRANONAPHTHOQUINONE COMPOUNDS AND METHODS OF USE THEREOF
申请人:University of Kentucky Research Foundation
公开号:US20180055816A1
公开(公告)日:2018-03-01
Provided herein are pyranonaphthoquinone compounds and methods of using pyranonaphthoquinone compounds. The method of using the pyranonaphthoquinone compounds includes selectively inhibiting 4E-BP1 phosphorylation by administering at least one pyranonaphthoquinone or pyranonaphthoquinone analog to a subject in need thereof. The pyranonaphthoquinone compounds includes a structure according to Formula I:
The divergent asymmetric synthesis of kalafungin, 5-epi-frenolicin B and related pyranonaphthoquinone antibiotics
作者:Christopher D. Donner
DOI:10.1016/j.tet.2012.10.012
日期:2013.1
A divergent, asymmetric method for the synthesis of pyranonaphthoquinones is reported. The synthetic strategy applies a Staunton–Weinreb annulation between substituted ortho-toluates and the (R)-pyran-2-one 7 to construct the key naphthopyranone intermediates. Stereoselective introduction of either a methyl or propyl C5 alkyl substituent by use of Grignard addition/silane-mediated reduction and a sequence
Two new enantioselectivesyntheses of the naphthopyranquinone antibiotic frenolicin B (1), of its enantiomer 2, and of its diastereoisomers 3 and 4 were accomplished using two different routes from optically active β-Hydroxy esters (R)- and (S)-11 and 18. β-Hydroxy esters (R)- and (S)-11 were prepared stereoselectivelyfrom optically active sulfenylacetates (S)- and (R)-10, respectively (Scheme 2,
Frenolicin B Targets Peroxiredoxin 1 and Glutaredoxin 3 to Trigger ROS/4E-BP1-Mediated Antitumor Effects
作者:Qing Ye、Yinan Zhang、Yanan Cao、Xiachang Wang、Yubin Guo、Jing Chen、Jamie Horn、Larissa V. Ponomareva、Luksana Chaiswing、Khaled A. Shaaban、Qiou Wei、Bradley D. Anderson、Daret K. St Clair、Haining Zhu、Markos Leggas、Jon S. Thorson、Qing-Bai She
DOI:10.1016/j.chembiol.2018.11.013
日期:2019.3
tuberous sclerosis complex to inhibit mTORC1/4E-BP1 signaling axis. FB structure-activityrelationshipstudiesreveal a positive correlation between inhibition of 4E-BP1 phosphorylation, ROS-mediated cancer cell cytotoxicity, and suppression of tumor growth in vivo. These findings establish FB as the most potent Prx1/Grx3 inhibitor reported to date and also notably highlight 4E-BP1 phosphorylation status
Peroxiredoxin 1(Prx1)和glutaredoxin 3(Grx3)是两个主要的抗氧化蛋白,在维持氧化还原稳态以促进肿瘤进展中起着关键作用。在这里,我们确定了典型的吡喃并萘醌天然产物贝宁(B)作为通过活性位半胱氨酸的共价修饰的Prx1和Grx3的选择性抑制剂。FB靶向抑制Prx1和Grx3会导致细胞内的谷胱甘肽水平降低,活性氧(ROS)升高以及伴随的癌细胞生长抑制,主要是通过激活与过氧化物酶体结合的结节性硬化复合物来抑制mTORC1 / 4E -BP1信号轴。FB结构-活性关系研究表明抑制4E-BP1磷酸化,ROS介导的癌细胞的细胞毒性和体内肿瘤生长的抑制之间存在正相关。
An unexpected oxidative decarboxylation reaction of frenolicin-B
作者:Susan D. Van Arnum、Nancy Stepsus、Barry K. Carpenter
DOI:10.1016/s0040-4039(96)02339-8
日期:1997.1
In the presence of free radicals, frenolicin-B (1) undergoes an unexpected oxidativedecarboxylationreaction to afford 2 in an overall yield of 51%. Theoretical calculations support the proposed mechanism.