rogerhuang009
第3楼2007/07/27
抱歉啊,粘贴不上,只能看附件了。
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当然,在数据库中计有三种选择,一是图示的“全球范围”,还有二种分别是“欧洲-esp@cenet”,以及“世界知识产权组织-esp@cenet”,这就不多说了。我总是选择“Worldwide”。
第二步:在检索词条(Search terms)中输入你所需的产品名称,如:Ranitidine Hydrochloride(雷尼替丁),再点击“搜索”,并可得到一系列的与所输入的产品相关的专利文献了。
第三步:索取原文(含结构式)并保存
找到你所需要的专利,打开后,你会在界面上看到如下的页面,这上面有该专利在其它地方申请的专利号,递交日期、文摘等内容。
Synthesis method of ranitidine alkali and its hydrochloride
rogerhuang009
第4楼2007/07/27
Bibliographic data Description Claims Mosaics Original document
INPADOC legal status
Publication number: CN1724526
Publication date: 2006-01-25
Inventor: LI YONG WANG (CN)
Applicant: ZHONGNO PHARMACEUTICAL SHIJIAZ (CN)
Classification:
- international: C07D307/52; C07D307/00;
- European:
Application number: CN20051012673 20050711
Priority number(s): CN20051012673 20050711
View INPADOC patent family
View list of citing documents
Also published as:
CN1315818C (C)
Abstract of CN1724526
The invention provides a method for synthesis of ranitidine alkali and ranitidine hydrochloride. It is characterized in that: 2- [ [ [5- (dimethylamino) methyl- 2- furyl] methyl] sulpho] ethylamine reacts with 1- methylthio - 1- methylamino- 2- nitro ethylene directly in water phase, crystallizing and separating out ranitidine alkali. The synthesis method comprises the following steps: adding 2- [ [ [5- (dimethylamino) methyl- 2- furyl] methyl] sulpho] ethylamine and 1- methylthio- 1- methylamino- 2- nitro ethylene with a molar ratio of 1.04: 1 into water, heating to 48- 52 Deg. C, reacting 4.5 hours with a vacuum degree of 0.02- 0.05 MPa, cooling, adding sodium-hydroxide of concentration of 10% to regulate the PH value to 11.0- 11.4, filtrating and cooling the filtrate to 0- 2 Deg. C, crystallizing for 12 hours, centrifugally filtrating, and rinsing filter cake with purity water to prepare wet ranitidine alkali; dissolving ranitidine alkali in alcohol and reacting with chlorhydric acid to prepare ranitidine hydrochloride.
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Data supplied from the esp@cenet database - Worldwide
看清楚了,有“Original document”的标示(我标注成了蓝色的部分),即“原文”,点击一下,你会得到下一个页面,抬头有这样提示框:
rogerhuang009
第5楼2007/07/27
In my patents list | Print | Maximise | Save Full Document
Return to result list | Previous in result list 10/119 Next in result list
点击“Save Full Document”(保存全部文件)后,会有几个字母出现,让你填写在空框内,确认填写正确后,你就可以递交啦,OK! 一篇你所需的包括结构式在内的专利就得到了。
注:有些专利没有“Original document”,那就表示该专利尚不公开,你无法得到。
当然,快速检索的缺点是范围太大了,有时得找好长时间,但好处是各时间段的相关专利你都能得到,以便自己参考。
3.2 专利号检索
这个就比较容易了,只要把你所知道的专利号输入就行,有一点需注意的是,应在专利号前加上专利的地区缩写,如EP0333024,表示该专利号为欧洲专利,美国的就在专利号前加上US了等等,否则,便是各地区的只要是这号的专利都出来了。
另外还要注意的是,所下载的文件均为PDF格式,因此,至少你的电脑得配置有电子阅读器。