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greenhand_ku: Ó¦ÖúÖ¸Êý+1, лл»ý¼«Ó¦Öú 2014-05-21 09:18:34
greenhand_ku: SFL-EPI+1, ¹ÄÀø½Ï´óƪ·ùµÄÊÖ¹¤·­ÒëÓ¦Öú 2014-05-21 09:25:20
1.Synthesising 20 - ammonia thiourea steroidal metal complexes.Puting changed pregnenolone third-substituent react with thiosemicarbazone with different substituents.And then,reacting with K2PtCl4,CuCl2¡¤2H2O,[Ru(¦Ç6-p-cymene)Cl2]2,from which we can get
8 kinds of metallic 20 - ammonia thiourea class steroid complexes.Reacting oestrone with 2 - hydrazine base pyridine,then reacting
with CuCl2¡¤2H2O,gaining 20 - hydrazine (2 -) pyridine steroidal metal complexes.We can discover that some compounds show good activity of inhibiting tumor cell proliferation from antitumor activity in vitro experiment.Such as compoud 4 and compoud 9,their IC50 figure to HELA cell is 9.5¦Ìmol/L and 4.8¦Ìmol/L.
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347416682: ½ð±Ò+20, ¡ï¡ï¡ïºÜÓаïÖú, ¶àлÀ² 2014-05-20 10:46:46
347416682: ½ð±Ò+20, ¡ï¡ï¡ïºÜÓаïÖú 2014-05-20 10:47:28
In the late 1960s,Cisplatin was found has curative effect to  a variety of cancers.Soon afters,plenty of Platinum derivatives were synthesized constantly.However,it's necessary to exploit new kinds of cisplatin anti-cancer drug because of its strong toxic and side effects.Steroids is a type of native compound with physiological activity,which is widely existed in creature having biological activity to various cancer cells.If combine sterides with metal effect groups,it may create a better result of suppressing tumor growth.
Based on researches on steroidal compounds against tumor  and metal complexes may have antitumor activity previously.This paper designed synthesis 23 new steroidal metal complexes and test biological activity on some of them.Four 3 - any thiourea steroidal metal complexes,nine 20 - ammonia thiourea steroidal metal complexes and ten 17 - ammonia thiourea steroidal metal complexes included and measure some compouds on antitumor activity in vitro.
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¡°In the late 1960s, cis-platinum (cisplatin) was found to have certain curative effect on a variety of cancers. Later, plenty of Platinum derivatives were continuously synthesized. However, owing to the strong toxicity of cis-platinum, such as the adverse effect of causing severe nausea, neurotoxicity, myelosuppression etc., it is very necessary to develop new kinds of anti-cancer platinum. Steroid, widely found in animals and plants, is a type of natural compound with a wide range of physiological activities. Besides, steroid inhibited various cancer cells. Therefore, it is hypothesized that combination of steroid with effective groups of metals might show greater inhibitory effects on tumor growth.¡±
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