A series of novel thio-substituted anthra[1,2-d]imidazole-6,11-dione dervatives, and the preparation method and application of said derivatives, said application having a pharmaceutical composition containing said derivatives with therapeutically effective amount for treating cancer, and said application involves effects of said derivatives for inhibiting telomerase activity, inhibiting the growth of cancer cell, treating cancer and the like.
Synthesis, characterization and structure of (methyl 2-butenoate)iron complexes
作者:Ming-Huei Cheng、Yuh-Jiuan Wu、Sue-Lein Wang、Rai-shung Liu
DOI:10.1016/0022-328x(89)85031-4
日期:1989.9
and methyl-4-chloro-2-butenoate in tetrahydrofuran at −78°C gives CpFe(CO)2(η1-CH2CHCHCOOCH3) (1). Photolysis of 1 in ether at −20°C yields (2). Attempts to prepare the corresponding η5-oxapentadienyl from 2 by thermolysis or photolytic activation were unsuccessful. Photolysis of 2 in the presence of the phosphine ligands R3P (R3P PMe3, P(OCH3)3 gives (PR3 PMe3 (3), P(OCH3)3 (4)). The molecular
[EN] CATALYSED ALTERNATING COPOLYMERISATION AND PRODUCT
申请人:——
公开号:WO1981001289A1
公开(公告)日:1981-05-14
(EN) A Process for the preparation of a copolymer comprising sequences of alternating monomer residues, which process comprises reacting at least one donor monomer with at least one acceptor monomer in the presence of: 1) a transition metal complex comprising at least one (Alpha)-acid ligand; 2) an organic compound, which may be a polymer, comprising at least one carbon-halogen bond, an acetylenic bond or an ethylenic bond conjugated with one or more electron attracting (-R) groups; and 3) a Lewis acid. (FR) Procede de preparation d'un copolymere comprenant des sequences de restes monomeres alternes, ce procede se basant sur la reaction entre au moins un monomere donneur et un monomere accepteur en presence de: (i) un complexe de metal de transition comprenant au moins un groupe de coordination (Alpha)-acide; (ii) un compose organique, qui peut etre un polymere, comprenant au moins une liaison carbone-halogene, une liaison acetylenique ou une liaison ethylenique conjuguee avec un ou plusieurs groupes d'attraction d'electrons (-R); et (iii) un acide de Lewis.