A systematic study of enantioresolution of a library of xanthonic derivatives, prepared “in-house”, was successfully carried out with four commercially available macrocyclic glycopeptide-based columns, namely ChirobioticTM T, ChirobioticTM R, ChirobioticTM V and ChirobioticTM TAG. Evaluation was conducted in multimodal elution conditions: normal-phase, polar organic, polar ionic and reversed-phase
使用四种市售的基于大环糖肽的色谱柱,即 ChirobioticTM T、ChirobioticTM R、ChirobioticTM V 和 ChirobioticTM TAG,成功地对“内部”制备的黄酮衍生物文库进行了对映拆分的系统研究。在多模式洗脱条件下进行评估:正相、极性有机、极性离子和反相。讨论了流动相组成、有机改性剂的百分比、流动相的pH值、不同流动相添加剂的性质和浓度对色谱参数的影响。ChirobioticTM T 和 ChirobioticTM V 分别在正相和反相模式下呈现最佳色谱参数。
Enantioresolution of Chiral Derivatives of Xanthones on (<i>S</i>
,<i>S</i>
)-Whelk-O1 and <scp>l</scp>
-Phenylglycine Stationary Phases and Chiral Recognition Mechanism by Docking Approach for (<i>S</i>
,<i>S</i>
)-Whelk-O1
作者:Carla Fernandes、Andreia Palmeira、Alexandre Santos、Maria Elizabeth Tiritan、Carlos Afonso、Madalena M. Pinto
DOI:10.1002/chir.22112
日期:2013.2
The resolution of seven enantiomeric pairs of chiral derivatives of xanthones (CDXs) on (S,S)‐Whelk‐O1 and l‐phenylglycinechiral stationary phases (CSPs) was systematically investigated using multimodal elution conditions (normal‐phase, polar‐organic, and reversed‐phase). The (S,S)‐Whelk‐O1 CSP, under polar‐organic conditions, demonstrated a very good power of resolution for the CDXs possessing an
New chiral stationary phases based on xanthone derivatives for liquid chromatography
作者:Carla Fernandes、Maria Elizabeth Tiritan、Sara Cravo、Ye’ Zaw Phyo、Anake Kijjoa、Artur M.S. Silva、Quezia B. Cass、Madalena M.M. Pinto
DOI:10.1002/chir.22706
日期:2017.8
Six chiralderivatives of xanthones (CDXs) were covalently bonded to silica, yielding the corresponding xanthonic chiralstationaryphases (XCSPs). The new XCSPs were packed into stainless‐steel columns with 150 x 4.6 mm i.d. Moreover, the greening of the chromatographic analysis by reducing the internal diameter (150 x 2.1 mm i.d.) of the liquid chromatography (LC) columns was also investigated. The
氧杂蒽酮(CDXs)的六个手性衍生物共价键合到硅胶上,产生相应的黄原酮手性固定相(XCSPs)。将新的XCSP装入内径为150 x 4.6 mm的不锈钢色谱柱中。此外,还研究了通过减小液相色谱(LC)色谱柱的内径(150 x 2.1 mm id)进行色谱分析的绿色方法。使用不同化学类别的手性化合物,包括几种药物,通过LC评估了这些相的对映选择性。为了探索对等原则以及手性自我识别现象,对CDXs库进行了评估。在多峰洗脱条件下研究了CDXs对映体混合物的分离。XCSP对主要在正相洗脱条件下评估的CDX对映体混合物提供了高特异性。此外,用相同的黄药选择剂的两种对映体制备了两种XCSP,以确认其反相顺序洗脱。
New chiral stationary phases for liquid chromatography based on small molecules: Development, enantioresolution evaluation and chiral recognition mechanisms
作者:Ye' Zaw Phyo、Joana Teixeira、Maria Elizabeth Tiritan、Sara Cravo、Andreia Palmeira、Luís Gales、Artur M.S. Silva、Madalena M.M. Pinto、Anake Kijjoa、Carla Fernandes
DOI:10.1002/chir.23142
日期:2020.1
the development of new chiralstationaryphases (CSPs) for liquidchromatography (LC) based on chiral derivatives of xanthones (CDXs). Based on the most promising CDX selectors, 12 new CSPs were successfully prepared starting from suitable functionalized small molecules including xanthone and benzophenone derivatives. The chiral selectors comprising one, two, three, or four chiral moieties were covalently
最近,我们报道了基于氧杂蒽酮(CDXs)的手性衍生物的液相色谱(LC)的新手性固定相(CSP)的开发。基于最有前途的CDX选择器,成功地从合适的功能化小分子(包括one吨酮和二苯甲酮衍生物)制备了12种新的CSP。将包含一个,两个,三个或四个手性部分的手性选择剂共价键合到色谱载体上,并进一步填充到LC不锈钢柱(150×2.1 mm ID)中。使用不同种类的手性化合物通过LC评估了新CSP的对映选择性。在评估新的CSP时观察到了对映体分离某些CDX的特异性。除了,通过使用分子对接方法的计算研究对手性识别机理进行了评估,这与色谱参数相符。X射线分析用于建立手性选择器3D结构。
New chiral derivatives of xanthones: Synthesis and investigation of enantioselectivity as inhibitors of growth of human tumor cell lines
作者:Carla Fernandes、Kamonporn Masawang、Maria Elizabeth Tiritan、Emília Sousa、Virgínia de Lima、Carlos Afonso、Hassan Bousbaa、Wanwisa Sudprasert、Madalena Pedro、Madalena M. Pinto
DOI:10.1016/j.bmc.2013.12.042
日期:2014.2
high enantiomeric excess. The synthesized CDXs were evaluated for their effect on the in vitro growth of three humantumorcell lines, namely A375-C5 (melanoma), MCF-7 (breast adenocarcinoma), and NCI-H460 (non-small cell lung cancer). The most active compound was CDX 15 being active in all humantumorcell lines with values of GI50 of 32.15 ± 2.03 μM for A375-C5, 22.55 ± 1.99 μM for MCF-7, and 14.05 ± 1