暂无 | 109789-41-5

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机磺酸及其衍生物
• 中文名称: 暂无
• 英文名称: heptaethylene glycol dimesylate
• 英文别名: Ms-PEG8-Ms；2-[2-[2-[2-[2-[2-(2-methylsulfonyloxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethyl methanesulfonate
• CAS: 109789-41-5
• 化学式: C₁₆H₃₄O₁₂S₂
• 分子量: 482.571
• InChiKey: HGSUQRYIYRXWTQ-UHFFFAOYSA-N

物化性质

• 溶解度：
  溶于DMSO、DCM、DMF

计算性质

• 辛醇/水分配系数(LogP)：
  -1.8
• 重原子数：
  30
• 可旋转键数：
  23
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  159
• 氢给体数：
  0
• 氢受体数：
  12

反应信息

• 作为反应物：
  描述：

  暂无 在 甲烷磺酸 、 phosphorus pentoxide 作用下， 反应 18.0h， 生成 4'-Acetylbenzo-24-crown-8 ether
  参考文献：
  名称：

  Synthesis of 4′-Vinylbenzo-3n-crown-n Ethers (4 ≦ n ≦ 10)

  摘要：

  DOI：

  10.1055/s-1986-31749

文献信息

• Preparation of benzo- and polybenzocrown ethers by macrocyclization reactions
  作者：Robert E. Hanes、Jong Chan Lee、Sheryl N. Ivy、Anna Palka、Richard A. Bartsch

  DOI：10.3998/ark.5550190.0011.718

  日期：——

  the method was used for the preparation of monobenzocrown ethers. Interestingly, for the preparation of monobenzocrown ethers, [2+2] adducts were discovered to be significantly contaminating the products. Dimesylates were chosen as the leaving group due to their ease or preparation and the ability to use the unpurified products with no apparent impact on the macrocyclization.

  探索了冠醚的大环化及其制备方法。我们提出了一种稳健、可扩展的方法来制备这些大环。此外，研究了改变前体结构的影响，以确定双酚和二甲磺酸酯的“切割”是否影响反应过程，如通过产率测量的。此外，使用儿茶酚衍生物，该方法用于制备单苯并冠醚。有趣的是，在制备单苯并冠醚时，发现 [2+2] 加合物严重污染了产品。选择二甲磺酸盐作为离去基团是因为它们易于制备，并且能够使用未纯化的产物而对大环化没有明显影响。
• Flavonoid Dimers and Methods of Making and Using Such
  申请人：Chan Tak-Hang

  公开号：US20090197943A1

  公开（公告）日：2009-08-06

  Multidrug resistance (MDR) is a major problem in cancer chemotherapy. The best characterized resistance mechanism is the one mediated by the over-expression of drug efflux transporters, permeability-glycoprotein (P-gp), which pump a variety of anticancer drugs out of the cells, resulting in lowered intracellular drug accumulation. A series of flavonoid dimers are developed in this invention, which are linked together by linker groups of various lengths. These flavonoid dimers are found to be efficient P-gp modulators that increase cytotoxicity of anticancer drugs in vitro and dramatically enhance their intracellular drug accumulation. It is found that the flavonoid dimers of this invention is also useful in reducing drug resistance in treating parasitic diseases.

  多药耐药性（MDR）是癌症化疗中的主要问题。最好表征的耐药机制是通过过度表达药物外流转运蛋白、渗透性糖蛋白（P-gp）介导的耐药机制，它将各种抗癌药物泵出细胞，导致细胞内药物积累降低。本发明开发了一系列由不同长度的连接基团连接在一起的类黄酮二聚体。发现这些类黄酮二聚体是有效的P-gp调节剂，可以增加抗癌药物在体外的细胞毒性并显著提高它们的细胞内药物积累。同时，发现本发明的类黄酮二聚体也有助于减少治疗寄生虫病的耐药性。
• Modulation of Multidrug Resistance Protein 1 (MRP1/ABCC1)-Mediated Multidrug Resistance by Bivalent Apigenin Homodimers and Their Derivatives
  作者：Iris L. K. Wong、Kin-Fai Chan、Ka Hing Tsang、Chi Yin Lam、Yunzhe Zhao、Tak Hang Chan、Larry Ming Cheung Chow

  DOI：10.1021/jm900194w

  日期：2009.9.10

  Here we showed that bivalency approach is effective in modulating multidrug resistance protein 1 (MRP1/ABCC1)-mediated doxorubicin (DOX) and etoposide (VP16) resistance in human 2008/MRP1 ovarian carcinoma cells. Flavonoid dimers bearing five or six ethylene glycol (EG) units with 6-methyl (4e, 4f) or 7-methyl (5e, 5f) substitution on the ring A of flavonoid dimers have the highest modulating activity for DOX against MRP1 with an EC50 ranging from 73 to 133 nM. At 0.5 mu M, the flavonoid dimer 4e was sufficient to restore DOX accumulation in 2008/MRP1 to parental 2008/P level. Lineweaver-Burk and Dixon plot suggested that it is likely a competitive inhibitor of DOX transport with a K-i = 0.2 mu M. Our data suggest that flavonoid dimers have a high affinity toward binding to DOX recognition site of MRP1. This results in inhibiting DOX transport, increasing intracellular DOX retention, and finally resensitizing 2008/MRP1 to DOX. The present study demonstrates that flavonoid dimers can be employed as an effective modulator of MRP1-mediated drug resistance in cancer cells.
• Flavonoid Dimers as Bivalent Modulators for P-Glycoprotein-Based Multidrug Resistance:  Synthetic Apigenin Homodimers Linked with Defined-Length Poly(ethylene glycol) Spacers Increase Drug Retention and Enhance Chemosensitivity in Resistant Cancer Cells
  作者：Kin-Fai Chan、Yunzhe Zhao、Brendan A. Burkett、Iris L. K. Wong、Larry M. C. Chow、Tak Hang Chan

  DOI：10.1021/jm060593+

  日期：2006.11.1

  Much effort has been spent on searching for better P-glycoprotein- ( P-gp-) based multidrug resistance ( MDR) modulators. Our approach was to target the binding sites of P-gp using dimers of dietary flavonoids. A series of apigenin-based flavonoid dimers, linked by poly( ethylene glycol) chains of various lengths, have been synthesized. These flavonoid dimers modulate drug chemosensitivity and retention in breast and leukemic MDR cells with the optimal number of ethylene glycol units equal to 2-4. Compound 9d bearing four ethylene glycol units increased drug accumulation in drug-resistant cells and enhanced cytotoxicity of paclitaxel, doxorubicin, daunomycin, vincristine, and vinblastine in drug- resistant breast cancer and leukemia cells in vitro, resulting in reduction of IC50 by 5-50 times. This compound also stimulated P-gp's ATPase activity by 3.3-fold. Its modulating activity was presumably by binding to the substrate binding sites of P-gp and disrupting drug efflux.
• TALMA A. G.; VOSSEN H. VAN; SUDHOLTER E. J. R.; EERDEN J. VAN; REINHOUDT +, SYNTHESIS,(1986) N 8, 680-683
  作者：TALMA A. G.、 VOSSEN H. VAN、 SUDHOLTER E. J. R.、 EERDEN J. VAN、 REINHOUDT +

  DOI：——

  日期：——