Synthesis and synergetic anti-tumor activity evaluation of dihydroartemisinin-organogermanium(IV) compound
摘要:
Dihydroartemisinin (DHA), a semi-synthetic derivative of the herb artemisinin, has shown commendable bioactivity. In this paper, a novel dihydroartemisinin-organogermanium (DHA-Ge) compound was synthesized, characterized and its potential anti-tumor activity was evaluated by various methods. MTT results demonstrated that DHA-Ge could effectively inhibit the proliferation of HepG2 cells and showed their dose-dependent properties. The IC50 value of inhibition effect on HepG2 cells of DHA-Ge was 10.23 mu g/ml which was lower than 39.44 mu g/ml of DHA. Flow cytometric results suggested that DHA-Ge could induce apoptosis of HepG2 cells and the apoptosis rate was 20.26% after 24 h treatment with 56.8 mu g/ml DHA-Ge concentration. Atomic force microscopy images showed that HepG2 cells were collapsed and the cell nucleus were fragmented after 24 h treatment. All these results together showed that the DHA-Ge possessed desirable synergetic enhanced anti-tumor effects and could be developed as a suitable tumor therapeutic agent. (C) 2014 Elsevier Ltd. All rights reserved.
Alkyl‐GeMe
<sub>3</sub>
: Neutral Metalloid Radical Precursors upon Visible‐Light Photocatalysis
作者:Qing‐Hao Xu、Li‐Pu Wei、Bin Xiao
DOI:10.1002/anie.202115592
日期:2022.3.28
Alkyl-GeMe3 was proven to be an effective radicalprecursor under visible-light photocatalysis. The metalloid nature of Ge allows single-electron transfer (SET) at the neutral Ge center and leads to advantages in separation and derivatization.
在可见光光催化下,烷基-GeMe 3被证明是一种有效的自由基前体。Ge 的准金属性质允许在中性 Ge 中心进行单电子转移 (SET),并在分离和衍生化方面具有优势。
Mironov, V. F.; Nuridzhanyan, A. K.; Feoktistov, A. E., Journal of general chemistry of the USSR, 1990, vol. 60, p. 125 - 127
作者:Mironov, V. F.、Nuridzhanyan, A. K.、Feoktistov, A. E.
DOI:——
日期:——
Synthesis, Spectral (FT‐IR, <sup>1</sup>H, <sup>13</sup>C, <sup>119</sup>Sn) and Biological Studies of Bimetallic Trimethyltin(IV) Germapropionates: X‐Ray Structure of (CH<sub>3</sub>)<sub>3</sub>Sn(C<sub>22</sub>H<sub>21</sub>O<sub>2</sub>Ge)
作者:Muhammad Kaleem Khosa、Muhammad Mazhar、Saqib Ali、Sarim Dastgir、Masood Parvez、Abdul Malik
DOI:10.1080/15533170701301470
日期:2007.4.1
New compounds of bimetallic trimethyltin(IV) germapropionates have been synthesized and characterized by elemental analyses, FT-IR, and multinuclear nmr (H-1,C-13,Sn-119) spectroscopies. These compounds show four-coordinated structure in solution and penta-coordinated structure in solid state. The crystal structure of representative compound, (CH3)(3)Sn(C-22 H-21 O-2 Ge), shows one dimensional polymeric penta-coordinated structure in its solid state. The synthesized compounds were subjected for a bioassay screening and show promising antibacterial and antifungal activities.
MIRONOV, V. F.;NURIDZHANYAN, A. K.;FEOKTISTOV, A. E., ZH. OBSHCH. XIMII, 60,(1990) N, S. 143-146
作者:MIRONOV, V. F.、NURIDZHANYAN, A. K.、FEOKTISTOV, A. E.
DOI:——
日期:——
KAKIMOTO, NORIHIRO;YOSHIWARA, TOHRU;AKIBA, MITSUO;ISHIDO, YOSHIHARU, J. ORGANOMET. CHEM., 385,(1990) N, C. 247-254