Process for the conversion of penam ring system to cepham ring system
The present invention relates to a new process for the preparation of cephalosporin derivative of formula (I) 1 wherein R 1 represents p-methoxybenzyl, p-nitrobenzyl, o-chlorobenzyl or diphenylmethyl; R 2 represents CH 3 or CR a R b COOR c where R a and R b independently represent hydrogen or methyl...
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| creator | Palanisamy, Senthilkumar Deshpande, Pandurang Ramar, Padmanabhan |
| description | The present invention relates to a new process for the preparation of cephalosporin derivative of formula (I)
1
wherein R
1
represents p-methoxybenzyl, p-nitrobenzyl, o-chlorobenzyl or diphenylmethyl; R
2
represents CH
3
or CR
a
R
b
COOR
c
where R
a
and R
b
independently represent hydrogen or methyl and R
c
represents hydrogen or (C
1
-C
6
) alkyl; R
3
represents hydrogen, acyl, phenacyl, formyl or trityl group. |
| format | Patent |
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1
wherein R
1
represents p-methoxybenzyl, p-nitrobenzyl, o-chlorobenzyl or diphenylmethyl; R
2
represents CH
3
or CR
a
R
b
COOR
c
where R
a
and R
b
independently represent hydrogen or methyl and R
c
represents hydrogen or (C
1
-C
6
) alkyl; R
3
represents hydrogen, acyl, phenacyl, formyl or trityl group.</description><language>eng</language><creationdate>2004</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20040002600$$EPDF$$P50$$Guspatents$$Hfree_for_read</linktopdf><link.rule.ids>230,308,778,871,883,64040</link.rule.ids><linktorsrc>$$Uhttps://patentcenter.uspto.gov/applications/10207110$$EView_record_in_USPTO$$FView_record_in_$$GUSPTO$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Palanisamy, Senthilkumar</creatorcontrib><creatorcontrib>Deshpande, Pandurang</creatorcontrib><creatorcontrib>Ramar, Padmanabhan</creatorcontrib><title>Process for the conversion of penam ring system to cepham ring system</title><description>The present invention relates to a new process for the preparation of cephalosporin derivative of formula (I)
1
wherein R
1
represents p-methoxybenzyl, p-nitrobenzyl, o-chlorobenzyl or diphenylmethyl; R
2
represents CH
3
or CR
a
R
b
COOR
c
where R
a
and R
b
independently represent hydrogen or methyl and R
c
represents hydrogen or (C
1
-C
6
) alkyl; R
3
represents hydrogen, acyl, phenacyl, formyl or trityl group.</description><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2004</creationdate><recordtype>patent</recordtype><sourceid>EFI</sourceid><recordid>eNqVjDEKAkEMALexEPUPaS2EcIofkBNLC_sjLFlv4S4Jmyj4ey1sLK0GhmGWqb82zewORRvEyJBVnty8qoAWMBaaoVW5g788eIZQyGzjr12nRaHJefPlKm3P_e102T3cKFjCBzKbaqb4jH3oEA-I2B0R9_-0b7PTOgY</recordid><startdate>20040101</startdate><enddate>20040101</enddate><creator>Palanisamy, Senthilkumar</creator><creator>Deshpande, Pandurang</creator><creator>Ramar, Padmanabhan</creator><scope>EFI</scope></search><sort><creationdate>20040101</creationdate><title>Process for the conversion of penam ring system to cepham ring system</title><author>Palanisamy, Senthilkumar ; Deshpande, Pandurang ; Ramar, Padmanabhan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-uspatents_applications_200400026003</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2004</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Palanisamy, Senthilkumar</creatorcontrib><creatorcontrib>Deshpande, Pandurang</creatorcontrib><creatorcontrib>Ramar, Padmanabhan</creatorcontrib><collection>USPTO Published Applications</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Palanisamy, Senthilkumar</au><au>Deshpande, Pandurang</au><au>Ramar, Padmanabhan</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Process for the conversion of penam ring system to cepham ring system</title><date>2004-01-01</date><risdate>2004</risdate><abstract>The present invention relates to a new process for the preparation of cephalosporin derivative of formula (I)
1
wherein R
1
represents p-methoxybenzyl, p-nitrobenzyl, o-chlorobenzyl or diphenylmethyl; R
2
represents CH
3
or CR
a
R
b
COOR
c
where R
a
and R
b
independently represent hydrogen or methyl and R
c
represents hydrogen or (C
1
-C
6
) alkyl; R
3
represents hydrogen, acyl, phenacyl, formyl or trityl group.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_uspatents_applications_20040002600 |
| source | USPTO Published Applications |
| title | Process for the conversion of penam ring system to cepham ring system |
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